NBTB


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestExpense

us-gaap:InterestIncomeExpenseNet
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestPaidNet

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxesPaidNet

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

nbtb:AtmFees

nbtb:DebtSecuritiesHeldToMaturitySoldAccumulatedUnrecognizedLoss

nbtb:GainsFromCallsOnSecuritiesAvailableForSale

nbtb:GainsFromCallsOnSecuritiesHeldToMaturity

nbtb:InterestExpenseLongTermDebtExcludingJuniorSubordinatedDebentures
us-gaap:Range
nbtb:LiquidationExpenseRatioOnImpairedCollateral

nbtb:LoanCollectionAndOtherRealEstateOwned

nbtb:OperatingLeaseRightOfUseAssetAmortization

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesBeforeTax

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesTax

nbtb:PaymentsToAcquireEquitySecurities

nbtb:RetirementPlanAdministrationFees

nbtb:ServiceChargesOnDepositAccounts

nbtb:StockIssuedDuringPeriodSharesEmployeeBenefitPlansAndOtherStockPlans

nbtb:StockIssuedDuringPeriodValueEmployeeBenefitPlansAndOtherStockPlans
us-gaap:StatementEquityComponents

nbtb:WealthManagement

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AdvertisingExpense

us-gaap:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments

us-gaap:BankOwnedLifeInsuranceIncome

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommunicationsAndInformationTechnology

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesHeldToMaturitySoldAmount
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DepreciationNonproduction
us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:DividendsCash
us-gaap:StatementEquityComponents

us-gaap:EquipmentExpense

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

us-gaap:FederalDepositInsuranceCorporationPremiumExpense
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableModificationsNumberOfContracts2
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:GainLossOnSaleOfLoansAndLeases

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:IncreaseDecreaseInDeposits

us-gaap:InsuranceAgencyManagementFee

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeSecuritiesAvailableForSale

us-gaap:InterestAndDividendIncomeSecuritiesHeldToMaturity

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestExpenseSubordinatedNotesAndDebentures

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:LaborAndRelatedExpense

us-gaap:NoninterestExpense

us-gaap:NoninterestIncome

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:OccupancyNet

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherNoninterestExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:PaymentsForOriginationOfMortgageLoansHeldForSale

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:ProFormaWeightedAverageSharesOutstandingDiluted

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfFederalHomeLoanBankStock

us-gaap:ProceedsFromSaleOfLoansHeldForSale

us-gaap:ProceedsFromSaleOfOtherRealEstate

us-gaap:ProfessionalFees
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:ProvisionForLoanLeaseAndOtherLosses
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:SuppliesAndPostageExpense

us-gaap:TransferToOtherRealEstate

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

nbtb:AmortizedCostsOfSecuritiesAvailableForSaleAndHeldToMaturityPledgedAsCollateralForRepurchaseAgreements
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
nbtb:DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities

nbtb:FinancingReceivableIndividuallyEvaluatedForImpairmentNumberOfRelationships

nbtb:FinancingReceivableRevolvingConvertedToTermLoan
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear
us-gaap:FinancialInstrument

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
nbtb:JuniorSubordinatedDebtObligationsFairValueDisclosure

nbtb:LoansAndLeasesReceivableCollateralDependentLoans

nbtb:LoansAndLeasesReceivableCollateralDependentLoansSpecificReserves

nbtb:LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust

nbtb:LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustAndSubordinatedDebt

nbtb:SavingsNowAndMoneyMarket
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
nbtb:TimeDepositsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear
us-gaap:FinancialInstrument

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1
us-gaap:FinancialInstrument

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear
us-gaap:FinancialInstrument

us-gaap:BankOwnedLifeInsurance

us-gaap:CashAndDueFromBanks
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DebtInstrumentFairValue
us-gaap:LongtermDebtType
us-gaap:DeferredFinanceCostsGross

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeAssets
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeCreditRiskValuationAdjustmentDerivativeAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilities
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeNotionalAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations

us-gaap:FederalHomeLoanBankStockAndFederalReserveBankStock

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRecordedInvestmentCurrent

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRevolving
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:HeldToMaturitySecurities
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions
us-gaap:FinancialInstrument

us-gaap:InterestBearingDepositsInBanks

us-gaap:JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome

us-gaap:LoansAndLeasesReceivableNetReportedAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LoansHeldForSaleFairValueDisclosure

us-gaap:LoansReceivableHeldForSaleAmount

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:NotesReceivableGross
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:NumberOfInterestRateDerivativesHeld

us-gaap:OtherAssets

us-gaap:OtherLiabilities

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged

us-gaap:ShortTermBorrowings

us-gaap:SubordinatedDebt
us-gaap:LongtermDebtType

us-gaap:TimeDeposits

us-gaap:TreasuryStockShares

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ██████████████████████████████▂▂▂▁▁▁▁▁▁0.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.3930.3930.3930.380.380.380.380.380.38NANANA
us-gaap:CommonStockSharesIssued ██████████████████████████████▂▂▂▁▁▁▁▁▁49.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149349.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149449.65149439.30513139.30513139.30513138.03553938.03553938.03553938.03553938.03553938.035539NANANA
us-gaap:CommonStockSharesAuthorized █████████████████████████████████▁▁▁▁▁▁100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.050.050.050.050.050.050.0NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█43.63743.835NA43.82543.80943.785NA43.71443.69943.663NA43.59543.57943.883NA43.243.00943.342NA43.69244.00744.153NA43.88243.86543.762NA43.71143.92336.41NA33.96133.49233.442NA33.56734.3234.65NA34.51334.565NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█43.63743.835NA43.82543.80943.785NA43.71443.69943.663NA43.59543.57943.513NA43.243.09943.342NA43.69244.00744.153NA43.88243.86543.762NA43.71143.92336.41NA33.61933.19133.063NA33.32434.04434.335NA34.29634.288NA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption█▁0.003250.0015NA0.00150.00150.0015NA0.00150.00150.0015NA0.003250.003250.000783NA0.00.0331790.030861NA0.036360.3391090.461611NA0.5018430.5030580.479543NA0.9724031.2313951.171825NA1.176671.271116NANANANANANANANANA
us-gaap:EarningsPerShareBasic ▆▁▇█▇▇▇▇▇▆▄▅▅▄▄▄▄▄▄▄▄▄▄▂▇▄▄▄▃▁▃▄▄▄▄▄▄▄▄▄▄▄0.570.240.65999999999999970.740.70.670.66000000000000010.680.640.60.40999999999999990.520.490.470.449999999999999960.460.460.440.439999999999999950.450.440.410.419999999999999930.250.630.410.40999999999999990.440.390.210.38999999999999990.430.40.410.419999999999999930.460.430.420.419999999999999930.420.420.41
us-gaap:EarningsPerShareDiluted ▆▁▇█▇▇▇▇▇▆▄▅▅▄▄▄▄▄▄▄▄▄▄▂▇▄▄▄▃▁▃▄▄▄▄▄▄▄▄▄▄▄0.560.230.65000000000000040.730.690.660.65000000000000010.680.640.590.400000000000000130.520.490.460.449999999999999960.460.460.430.429999999999999940.450.430.410.40999999999999990.250.620.410.40999999999999990.440.380.210.39000000000000010.430.40.410.419999999999999930.450.430.410.40999999999999990.420.420.41
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:InterestAndFeeIncomeLoansAndLeases ▇▇████▇▇▆▆▅▅▄▄▄▄▄▃▃▄▃▃▄▃▃▃▃▄▄▂▂▂▁▁▁▁▁▁▂▂▂▂77.2778.72879.881.08281.27179.32178.96377.24974.17270.44369.69768.08665.28664.02763.90163.41462.44961.2360.78161.65659.87359.51861.57761.17360.55960.01561.17361.77362.03153.69553.92453.81750.50950.20851.39350.99151.12650.8652.93353.30153.50353.692
us-gaap:InterestExpense ▂▆▇██▇▆▅▄▃▂▂▂▂▁▂▁▁▁▁▁▁▁▁▂▂▃▃▃▃▃▄▄▄▄▄▅▅▆▇██7.012.2213.39314.32714.60613.65311.64910.6779.0267.2746.7796.9176.2735.9455.6845.8475.5985.3775.2595.2555.0425.065.395.3715.8826.567.1237.3437.9498.2298.4048.688.8969.2149.3999.42310.09410.80511.8512.68514.00514.67
us-gaap:InterestIncomeExpenseNet █▇▇▇█▇█▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▂▂▂▁▁▁▁▁▁▁▁▁▁80.44677.18177.18378.05478.62777.69178.87577.52775.74173.48673.45171.9369.62168.49167.42566.66265.77764.57763.51264.24562.68562.16664.02463.76362.57461.51762.05862.22661.65552.1452.45352.60749.75149.39250.49950.36150.16449.25250.49950.62750.60150.801
us-gaap:InterestPaidNet ▃▆▇█▇▇▅▅▃▃▂▃▂▂▁▂7.45512.5313.19915.11314.26713.32910.68910.337.9957.6776.1167.3676.0416.3635.1976.343NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▆▁▇█▇▇▅▇▇▆▆▆▆▅▅▅▅▅▅▅▅▅▅▂█▅▅▅▄▁▃▃▃▃▃▃▃▃▃▃▃▃31.27712.08337.12641.70139.3637.24529.38938.38536.23332.99533.32634.21832.03728.5829.70930.30430.16628.62229.58530.64929.03827.35627.43516.48841.69926.68126.70827.88924.3411.00618.88320.04818.9419.50317.64120.33420.84720.35218.79819.40520.37419.739
us-gaap:IncomeTaxExpenseBenefit ▄▁▄▅▅▄▁▅▄▄█▆▆▅▅▅▅▅▆▆▅▅▅▃▇▅▅▅▄▂▃▃▃▃▂▃▄▃▃▃▃▃6.5641.7158.1669.3228.8058.1180.7378.5788.1127.00915.68911.34210.6788.30110.10110.30310.2579.73110.45810.7989.7579.198.9225.57614.0598.6728.7838.6327.4243.3575.7675.5135.6835.8533.9195.1176.1926.0454.3644.8355.955.763
us-gaap:IncomeTaxesPaidNet ▂▁▄▃▅▁▁▄█▂▅▄2.1971.968.4296.87111.2571.8170.8218.18719.6913.19911.4459.344NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax ▆▅▅▄▂▂▁▄▅██▅▄0.047-0.184-0.048-0.29-0.789-0.726-0.893-0.348-0.0870.5170.475-0.04-0.268NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▆▂▇█▇▇▇▇▇▆▄▅▅▅▄▄▄▄▄▄▄▄▄▂▇▄▄▄▄▁▃▃▃▃▃▃▃▃▃▃▃▃24.71310.36828.9632.37930.55529.12728.65229.80728.12125.98617.63722.87621.35920.27919.60820.00119.90918.89119.12719.85119.28118.16618.51310.91227.6418.00917.92519.25716.9167.64913.11614.53513.25713.6513.72215.21714.65514.30714.43414.5714.42413.976
us-gaap:ComprehensiveIncomeNetOfTax ▆▅▇▇█▇▇▅▅▃▃▅▅▅▂▄▅▆▂▅▄▅▂▂▇▅▅▄▁▂▃▃▃▃▁▄▄▃▁▃▄▃29.99326.60232.85834.49140.45137.36934.5925.45124.37315.27512.22424.10323.0622.20710.06819.16822.63327.43810.07422.70916.58921.66210.2368.71732.63523.22424.2817.7232.4566.40310.98215.99613.52514.2793.97919.06921.14412.944.59214.02916.87615.409
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █▇▇▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▂▂▂▂▁▁▁▁▁10847.1849953.5439715.9259661.3869635.7189533.519556.3639547.2849467.1389230.8349136.8129155.3969076.4188945.4858867.2688773.0248624.788472.9648262.6468161.5628072.4857863.8617797.9267867.0317869.5127753.1297652.1757668.9037534.5187610.8316042.2596028.9165967.5685784.9735598.4065478.4515336.9965477.6125338.856NANANA
us-gaap:Liabilities █▇▆▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▂▂▂▂▁▁▁▁▁9704.5328841.3648595.5288562.7858560.8958499.4558538.4548553.1298488.2098278.1048178.6358200.1588136.0578018.6467953.9527863.6757728.4277591.2377380.6427285.3467196.5146986.3676933.7457009.5917012.3716920.9276835.6066873.3446742.9436807.5365459.9865452.2555401.0635236.245060.2964939.6034801.7334938.5364805.284NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▂▂▂▂▁▁▁▁▁10847.1849953.5439715.9259661.3869635.7189533.519556.3639547.2849467.1389230.8349136.8129155.3969076.4188945.4858867.2688773.0248624.788472.9648262.6468161.5628072.4857863.8617797.9267867.0317869.5127753.1297652.1757668.9037534.5187610.8316042.2596028.9165967.5685784.9735598.4065478.4515336.9965477.6125338.856NANANA
us-gaap:StockholdersEquity ████▇▇▇▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▂▂▂▁▁▁▁▁▁▁▁▁1142.6521112.1791120.3971098.6011074.8231034.0551017.909994.155978.929952.73958.177955.238940.361926.839913.316909.349896.353881.727882.004876.216875.971877.494864.181857.44857.141832.202816.569795.559791.575803.295582.273576.661566.505548.733538.11538.848535.263539.076533.572534.251527.022515.476
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue █▃▂▃▂▂▂▂▂▂▂▂▂▁▂▂▂▂▁▂▁▁▂▂▂▂▂▂▁▃▂▁▁▃▁▂▁▄▂▄▂▃699.492283.36216.843274.096189.432177.119180.955174.633152.483159.579159.664181.816163.93141.896149.181188.437171.603155.51140.297185.0134.211142.663146.636174.535183.337185.564158.926208.242143.687299.146163.668140.44139.164299.604129.381191.945102.766321.946168.792340.733167.037236.776
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AmortizationOfIntangibleAssets ▃▂▂▃▃▄▄▅▅▃▄▄▄▄▃▃▃▅▇▆▆▇▇▇▇████▂▂▃▂▂▁▂▁▁▁▁▂▂0.8830.8340.8440.8740.8930.9680.9781.0541.0960.9140.9610.9931.0390.9670.9520.9520.9281.0961.2281.1651.1871.2841.2261.2751.2361.311.3241.3461.3510.8510.8640.870.8410.8190.760.7820.7710.7330.7440.7670.780.781
us-gaap:PropertyPlantAndEquipmentNet ▃▄▄▄▄▅▅▅▅▅▆▆▆▆▆▆▇▇██▇████▇█▇██▄▄▄▄▃▂▁▁▁74.55876.50275.63175.70876.65278.39178.9778.28478.57880.07381.30581.42182.18583.14484.18784.15384.59686.40788.82687.76387.65288.1589.25889.02387.97287.64788.32786.89187.81188.58277.87577.32676.90675.23274.54169.09266.89867.10967.404NANANA
us-gaap:Goodwill █████████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▃▃▃▂▂▁▁▁▁280.541274.769274.769274.769274.769274.769274.769274.769274.769268.043268.043268.043268.043265.439265.439264.689265.957265.957265.957263.634263.634263.634263.634263.634263.634263.634264.997265.052264.376263.645152.373152.251151.628133.614132.029116.127116.127114.841114.841NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▂▁▁▂▂▂▃▃▃▂▂▃▃▂▃▃▃▃▃▃▄▄▅▅▆▆▇▇██▃▃▄▄▄▃▄▃▃13.41311.18612.0212.86413.73814.63115.59916.57617.6312.50613.4215.91116.90414.84815.81515.89915.24116.16817.26516.72917.89719.08420.31721.54322.81924.24825.55726.85728.20429.27316.96217.34618.19118.1318.19417.6218.40217.01617.543NANANA
us-gaap:EquitySecuritiesFvNi █▅▆▅▅▄▁▃▂29.22326.37827.77126.81826.29825.48223.05324.72224.293NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ████▇▇▇▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▂▂▂▁▁▁▁▁▁▁▁▁1142.6521112.1791120.3971098.6011074.8231034.0551017.909994.155978.929952.73958.177955.238940.361926.839913.316909.349896.353881.727882.004876.216875.971877.494864.181857.44857.141832.202816.569795.559791.575803.295582.273576.661566.505548.733538.11538.848535.263539.076533.572534.251527.022515.476
us-gaap:CommonStockValue ██████████████████████████████▂▂▂▁▁▁▁▁▁0.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.3930.3930.3930.380.380.380.380.380.38NANANA
us-gaap:AdditionalPaidInCapital ██▇▆▆▆▅▅▄▄▃▂▁▂▄▂▁▂▇577.197577.08576.708576.146575.794575.944575.466575.155574.741574.626574.209573.772573.109573.627575.078573.658573.067573.754576.726NANANA576.504NANANANANANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ████▇▇▇▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁703.322678.611696.214679.09658.107627.556621.203603.921585.044555.783543.713536.107523.26511.925501.761492.13482.074471.65462.232452.701442.446432.84423.956414.695413.011394.589385.787377.046366.555358.449357.558351.261343.46336.787329.981323.4314.873307.056299.797NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▇▅▄▄▃▂▁▂▂▅▅▅▅▅▆▆▆▅▆▅▆▅▆▇▆▅▄▅▇▇▇▇▇▇█▇▇▇2.488-2.792-19.026-22.924-25.036-34.932-43.174-49.112-44.756-40.991-22.077-16.664-17.891-19.592-21.52-11.98-11.147-13.871-22.418-13.365-16.223-13.531-17.027-8.75-6.555-11.55-16.765-23.12-21.586-7.126-5.88-3.746-5.207-5.475-6.1043.639-0.213-6.702-5.335NANANA
us-gaap:TreasuryStockValue ████████████████████▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▁▆▆▆140.852141.217133.996134.208134.539135.01136.083136.306136.597137.185138.165138.474138.614139.618142.5144.956148.138150.303135.033140.095126.361118.24119.749123.659123.814125.405127.102132.105126.25121.663116.49117.181117.325101.734103.476-104.6195.23276.44575.293NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▆█▆▂▆█▇▁▆▆▄▆▃▄▄36.11540.92749.50442.13822.60839.21347.99142.60717.12440.05140.33630.65938.1827.72930.69129.818NANANANANANANA15.80610.63432.33533.03744.33137.0154.91531.11524.61718.55314.56916.23924.44419.00624.07620.88223.99325.65918.903
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▆▅█▆█▇▆▄▆▇▆▆▆▅▅-459.92-112.235-131.71270.375-61.1558.144-17.235-64.255-227.88-108.249-29.281-69.663-112.246-94.003-172.578-137.265NANANANANANANA-8.08-80.986-76.218-48.057-77.613-120.00161.917-5.617-59.007-92.66430.438-53.862-51.843-74.6774.884-51.43598.35220.285-8.708
us-gaap:NetCashProvidedByUsedInFinancingActivities █▃▂▂▂▁▂▂▃▂▂▂▂▂▃▃839.937137.82524.955-27.84950.855-101.193-24.43443.798203.6668.113-33.20756.8996.158.989102.631124.281NANANANANANANA-16.52868.12570.521-34.29697.837-72.47368.646-2.2735.666-86.329125.216-24.941116.578-163.509124.194-141.38851.351-115.68339.42
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▆█▆▂▆█▇▁▆▆▄▆▃▄▄36.11540.92749.50442.13822.60839.21347.99142.60717.12440.05140.33630.65938.1827.72930.69129.818NANANANANANANA15.80610.63432.33533.03744.33137.0154.91531.11524.61718.55314.56916.23924.44419.00624.07620.88223.99325.65918.903
us-gaap:NetIncomeLoss ▆▂▇█▇▇▇▇▇▆▄▅▅▅▄▄▄▄▄▄▄▄▄▂▇▄▄▄▄▁▃▃▃▃▃▃▃▃▃▃▃▃24.71310.36828.9632.37930.55529.12728.65229.80728.12125.98617.63722.87621.35920.27919.60820.00119.90918.89119.12719.85119.28118.16618.51310.91227.6418.00917.92519.25716.9167.64913.11614.53513.25713.6513.72215.21714.65514.30714.43414.5714.42413.976
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▃▅▂▂▆▃▂▁█▂2.87510.627-4.677-4.57213.2250.926-4.759-7.51223.886-2.061NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ▂█▂▁▁█▁▁▁▇▁▁▁▆▄▂▂▅▂▂▂▆▂▂▂▄▂▂▂▆▂▂▂▆▂▂▁▃▃▁▄▁0.6342.6750.6140.4560.5632.5770.4790.5030.52.4540.4490.5570.4722.1661.2820.810.6741.6120.6890.7210.6881.9880.7040.7350.8281.2540.7340.8450.7621.9640.8060.7610.792.0070.8080.7130.5781.1451.2240.5741.470.514
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▆▅█▆█▇▆▄▆▇▆▆▆▅▅-459.92-112.235-131.71270.375-61.1558.144-17.235-64.255-227.88-108.249-29.281-69.663-112.246-94.003-172.578-137.265NANANANANANANA-8.08-80.986-76.218-48.057-77.613-120.00161.917-5.617-59.007-92.66430.438-53.862-51.843-74.6774.884-51.43598.35220.285-8.708
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities █▃▂▂▂▁▂▂▃▂▂▂▂▂▃▃839.937137.82524.955-27.84950.855-101.193-24.43443.798203.6668.113-33.20756.8996.158.989102.631124.281NANANANANANANA-16.52868.12570.521-34.29697.837-72.47368.646-2.2735.666-86.329125.216-24.941116.578-163.509124.194-141.38851.351-115.68339.42
us-gaap:RepaymentsOfLongTermDebt NA0.02820.0280.0280.0280.0270.0280.02615.04625.04525.0440.04515.0650.06430.0570.04220.0710.070.1880.070.070.170.11120.936194.6410.1440.1860.102119.5543.7570.0040.0033.3430.0040.0030.0032.140.059.59449.99325.12950.108
us-gaap:PaymentsOfDividendsCommonStock ▁█▅▄▁█▄▄▁▇▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃0.00223.63211.83611.3960.00422.77411.3710.930.00320.96610.03110.02910.02410.029.9779.9459.4859.4739.5969.5969.6759.2829.2529.2289.2189.2079.1848.7668.816.7586.7466.7346.5846.6486.6246.6876.8396.9136.8996.8976.8986.883
us-gaap:PaymentsForRepurchaseOfCommonStock ▁█0.07.98NANA0.00.0NANANANA0.00.00.00.00.00.00.017.1930.016.12510.6720.00.00.0NANA0.017.919-5.460.00.030.98-15.490.0NANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType us-gaap:SubordinatedDebt5.0000000000000004e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0393000.0393000.0393000.0380000.0380000.0380000.0380000.0380000.0380000.0380000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value49494949494949494949494949494949494949494949494949494949494939393938383838383838
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10010010010010010010010010010010010010010010010010010010010010010010010010010010010010010010010010050505050505050
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value43434343434343434343434343434344444343434343363333333334343434
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value43434343434343434343434343434344444343434343363333333334343434
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value3250.01500.01500.01500.01500.01500.01500.01500.03250.03250.0783.0033179.030861.036360.0339110.0461610.0501840.0503060.0479540.0972400.01231400.01171800.01176700.01271100.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.570.240.660.740.70.670.660.680.640.60.410.520.490.470.450.460.460.440.440.450.440.410.420.250.630.410.410.440.390.210.390.430.40.410.420.460.430.420.420.420.420.41
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.560.230.650.730.690.660.650.680.640.590.40.520.490.460.450.460.460.430.430.450.430.410.410.250.620.410.410.440.380.210.390.430.40.410.420.450.430.410.410.420.420.41
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestAndFeeIncomeLoansAndLeases


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value777879818179787774706968656463636261606159596161606061616253535350505150515052535353
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating88.488.10.087.887.286.80.087.687.587.20.086.486.086.00.087.587.587.50.088.788.488.50.088.588.588.20.088.889.188.90.087.886.185.70.085.384.884.70.084.282.882.0

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.0121314141311109.0267.2746.7796.9176.2735.9455.6845.8475.5985.3775.2595.2555.0425.065.395.3715.8826.567.1237.3437.9498.2298.4048.688.8969.2149.3999.423101011121414
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating8.013.70.015.515.714.90.012.110.69.00.08.88.38.00.08.17.87.70.07.67.47.50.07.88.69.60.010.611.413.60.014.215.215.70.015.816.818.00.020.021.722.4

None

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value807777787877787775737371696867666564636462626463626162626152525249495050504950505050
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating92.086.30.084.584.385.10.087.989.491.00.091.291.792.00.091.992.292.30.092.492.692.50.092.291.490.40.089.488.686.40.085.884.884.30.084.283.282.00.080.078.377.6

us-gaap:InterestIncomeExpenseNet us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, nbtb:AmortizationOfUnrealizedGainsAndLossesRelatedToSecuritiesTransfer


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.1650.1730.1810.190.1990.1670.1550.1680.1770.1880.20.2120.2250.2380.2510.2670.280.296
Percentage of InterestIncomeExpenseNet0.20.20.20.20.30.20.20.20.20.30.30.30.30.30.40.40.40.5
Percentage of InterestAndDividendIncomeOperating0.20.20.00.20.20.20.00.20.20.20.00.30.30.30.00.40.40.4
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome nbtb:AmortizationOfUnrealizedGainsAndLossesRelatedToSecuritiesTransfer0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.0810.01-0.395-0.738-0.799-0.638-0.54-0.359
Percentage of InterestIncomeExpenseNet0.10.0-0.5-0.9-1.0-0.8-0.7-0.5
Percentage of InterestAndDividendIncomeOperating0.10.0-0.4-0.8-0.9-0.7-0.6-0.4
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.0

None

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value7.455121315141310107.9957.6776.1167.3676.0416.3635.1976.343
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating8.514.00.016.415.314.60.011.79.49.50.09.38.08.50.08.7

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value311237413937293836323334322829303028293029272716412626272411182018191720202018192019
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating35.813.50.045.142.240.80.043.542.740.90.043.442.238.40.041.842.340.90.044.142.940.70.023.860.939.20.040.135.018.20.032.732.333.30.034.034.633.90.030.631.530.1

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.5641.7158.1669.3228.8058.1180.7378.5788.1127.0091511108.3011010109.73110109.7579.198.9225.576148.6728.7838.6327.4243.3575.7675.5135.6835.8533.9195.1176.1926.0454.3644.8355.955.763
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating7.51.90.010.19.48.90.09.79.68.70.014.414.111.20.014.214.413.90.015.514.413.70.08.120.512.70.012.410.75.60.09.09.710.00.08.610.310.10.07.69.28.8

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-0.096-0.095-0.176-0.168-0.164-0.164-0.067-0.0710.0740.074-1.2560.1830.1660.1660.3480.2020.199-0.1991.52-0.214-0.2190.2180.0070.0070.0080.0080.2990.2830.2840.3230.3430.390.345
Percentage of IncomeTaxExpenseBenefit-1.5-5.5-2.2-1.8-1.9-2.0-9.1-0.80.91.1-8.01.61.62.03.42.01.9-2.014.5-2.0-2.22.40.10.10.10.13.43.33.89.65.97.16.1
Percentage of InterestAndDividendIncomeOperating-0.1-0.10.0-0.2-0.2-0.20.0-0.10.10.10.00.20.20.20.00.30.3-0.30.0-0.3-0.30.30.00.00.00.00.00.40.40.50.00.60.6
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-0.02-0.0030.020.0980.1850.20.1910.159-0.1350.090.0760.059-0.009
Percentage of IncomeTaxExpenseBenefit-0.3-0.20.21.12.12.525.91.9-1.71.30.50.5-0.1
Percentage of InterestAndDividendIncomeOperating-0.0-0.00.00.10.20.20.00.2-0.20.10.00.1-0.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-0.042-0.042-0.045-0.042-0.05-0.067-1.694-0.0420.044-0.043-0.880.0830.0850.592-0.9940.1050.108-0.1051.063-0.127-0.092-0.098-0.1910.0550.0060.0030.00.132-0.0240.4540.0060.010.039
Percentage of IncomeTaxExpenseBenefit-0.6-2.4-0.6-0.5-0.6-0.8-229.9-0.50.5-0.6-5.60.70.87.1-9.81.01.1-1.110.2-1.2-0.9-1.1-2.11.00.00.00.01.5-0.313.50.10.20.7
Percentage of InterestAndDividendIncomeOperating-0.0-0.00.0-0.0-0.1-0.10.0-0.00.1-0.10.00.10.10.80.00.10.2-0.20.0-0.2-0.1-0.10.00.10.00.00.00.2-0.00.80.00.00.1
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.1971.968.4296.871111.8170.8218.187193.199119.344
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.52.20.07.412.12.00.09.323.24.00.011.9

None

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value47000.0-184000.0-48000.0-290000.0-789000.0-726000.0-893000.0-348000.0-87000.0517000.0475000.0-40000.0-268000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.1-0.20.0-0.3-0.8-0.80.0-0.4-0.10.60.0-0.1-0.4

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value24102832302928292825172221201920191819191918181027181719167.649131413131315141414141413
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.311.60.035.032.831.90.033.833.232.20.029.028.127.20.027.627.927.00.028.628.527.00.015.840.426.50.027.724.312.70.023.722.623.30.025.524.323.80.023.022.321.3

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.2850.2860.5250.5040.4930.4920.2020.2150.2210.2210.2780.2970.2690.2690.4780.3170.3130.3130.350.3370.3420.3420.0120.0110.0110.0110.2470.4260.4260.5030.5480.5990.511
Percentage of NetIncomeLoss1.22.81.81.61.61.70.70.70.80.91.61.31.31.32.41.61.61.71.81.71.81.90.10.10.00.11.42.22.56.64.24.13.9
Percentage of InterestAndDividendIncomeOperating0.30.30.00.50.50.50.00.20.30.30.00.40.40.40.00.40.40.40.00.50.50.50.00.00.00.00.00.60.60.80.01.00.9
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0610.007-0.06-0.297-0.553-0.599-0.572-0.479-0.405-0.269-0.12-0.096-0.014
Percentage of NetIncomeLoss0.20.1-0.2-0.9-1.8-2.1-2.0-1.6-1.4-1.0-0.7-0.4-0.1
Percentage of InterestAndDividendIncomeOperating0.10.00.0-0.3-0.6-0.70.0-0.5-0.5-0.30.0-0.1-0.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.1230.1280.1360.1280.1490.1995.0830.1260.133-0.128-1.0310.1330.1380.9580.5650.1620.1710.162-1.6690.1980.1890.195-0.219-0.082-0.008-0.004-0.013-0.1970.037-0.691-0.015-0.016-0.058
Percentage of NetIncomeLoss0.51.20.50.40.50.717.70.40.5-0.5-5.80.60.64.72.90.80.90.9-8.71.01.01.1-1.2-0.8-0.0-0.0-0.1-1.00.2-9.0-0.1-0.1-0.4
Percentage of InterestAndDividendIncomeOperating0.10.10.00.10.20.20.00.10.2-0.20.00.20.21.30.00.20.20.20.00.30.30.30.0-0.1-0.0-0.00.0-0.30.1-1.10.0-0.0-0.1
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value24102832302928292825172221201920191819191918181027181719167.649131413131315141414141413
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.311.60.035.032.831.90.033.833.232.20.029.028.127.20.027.627.927.00.028.628.527.00.015.840.426.50.027.724.312.70.023.722.623.30.025.524.323.80.023.022.321.3
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value29263234403734252415122423221019222710221621108.717322324172.4566.403101513143.9791921124.592141615
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating34.329.80.037.343.440.90.028.928.818.90.030.630.429.80.026.431.739.20.032.724.532.20.012.647.734.10.025.53.510.60.026.123.124.40.031.935.121.50.022.226.123.5

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10847995397159661963595339556954794679230913691559076894588678773862484728262816180727863779778677869775376527668753476106042602859675784559854785336547753385464
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Liabilities

us-gaap:Liabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value9704884185958562856084998538855384888278817882008136801879537863772875917380728571966986693370097012692068356873674268075459545254015236506049394801493848054958
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets89.588.888.588.688.889.289.389.689.789.789.589.689.689.689.789.689.689.689.389.389.188.888.989.189.189.389.389.689.589.490.490.490.590.590.490.290.090.290.090.8

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10847995397159661963595339556954794679230913691559076894588678773862484728262816180727863779778677869775376527668753476106042602859675784559854785336547753385464
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1142111211201098107410341017994978952958955940926913909896881882876875877864857857832816795791803582576566548538538535539533534527515505431397
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.511.211.511.411.210.810.710.410.310.310.510.410.410.410.310.410.410.410.710.710.911.211.110.910.910.710.710.410.510.69.69.69.59.59.69.810.09.810.00.00.00.09.20.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2.488-2.792-19.026-22.924-25.036-34.932-43.174-49.112-44.756-40.991-22.077-16.664-17.891-19.592-21.52-11.98-11.147-13.871-22.418-13.365-16.223-13.531-17.027-8.75-6.555-11.55-16.765-23.12-21.586-7.126-5.88-3.746-5.207-5.475-6.1043.639-0.213-6.702-5.3354.5075.0482.5961.163-8.204-3.575
Percentage of StockholdersEquity0.2-0.3-1.7-2.1-2.3-3.4-4.2-4.9-4.6-4.3-2.3-1.7-1.9-2.1-2.4-1.3-1.2-1.6-2.5-1.5-1.9-1.5-2.0-1.0-0.8-1.4-2.1-2.9-2.7-0.9-1.0-0.6-0.9-1.0-1.10.7-0.0-1.2-1.00.81.00.50.2-1.9-0.9
Percentage of Assets0.0-0.0-0.2-0.2-0.3-0.4-0.5-0.5-0.5-0.4-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.2-0.3-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.2-0.3-0.3-0.1-0.1-0.1-0.1-0.1-0.10.1-0.0-0.1-0.10.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value577577576576575575575575574574574573573573575573573573576576575575576574574574574573572573346345345318317316315314314313312312311276273
Percentage of StockholdersEquity50.551.951.552.453.655.756.557.958.760.359.960.160.961.963.063.163.965.165.465.865.765.666.767.067.069.070.372.172.371.359.560.060.958.159.058.758.958.458.958.659.360.561.664.068.8
Percentage of Assets5.35.85.96.06.06.06.06.06.16.26.36.36.36.46.56.56.66.87.07.17.17.37.47.37.37.47.57.57.67.55.75.75.85.55.75.85.95.75.90.00.00.05.70.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value0.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.3930.3930.3930.380.380.380.380.380.380.380.380.380.380.3650.365
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value703678696679658627621603585555543536523511501492482471462452442432423414413394385377366358357351343336329323314307299292284277270245215
Percentage of StockholdersEquity61.661.062.161.861.260.761.060.759.858.356.756.155.655.254.954.153.853.552.451.750.549.349.148.448.247.447.247.446.344.661.460.960.661.461.360.058.857.056.254.754.053.853.556.854.1
Percentage of Assets6.56.87.27.06.86.66.56.36.26.06.05.95.85.75.75.65.65.65.65.55.55.55.45.35.25.15.04.94.94.75.95.85.85.85.95.95.95.65.60.00.00.04.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-140.852-141.217-133.996-134.208-134.539-135.01-136.083-136.306-136.597-137.185-138.165-138.474-138.614-139.618-142.5-144.956-148.138-150.303-135.033-140.095-126.361-118.24-119.749-123.659-123.814-125.405-127.102-132.105-126.25-121.663-116.49-117.181-117.325-101.734-103.476-104.61-95.232-76.445-75.293-75.989-75.669-76.778-77.816-82.074-87.796
Percentage of StockholdersEquity-12.3-12.7-12.0-12.2-12.5-13.1-13.4-13.7-14.0-14.4-14.4-14.5-14.7-15.1-15.6-15.9-16.5-17.0-15.3-16.0-14.4-13.5-13.9-14.4-14.4-15.1-15.6-16.6-15.9-15.1-20.0-20.3-20.7-18.5-19.2-19.4-17.8-14.2-14.1-14.2-14.4-14.9-15.4-19.0-22.1
Percentage of Assets-1.3-1.4-1.4-1.4-1.4-1.4-1.4-1.4-1.4-1.5-1.5-1.5-1.5-1.6-1.6-1.7-1.7-1.8-1.6-1.7-1.6-1.5-1.5-1.6-1.6-1.6-1.7-1.7-1.7-1.6-1.9-1.9-2.0-1.8-1.8-1.9-1.8-1.4-1.40.00.00.0-1.40.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value699283216274189177180174152159159181163141149188171155140185134142146174183185158208143299163140139299129191102321168340167236187110162
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.42.82.22.82.01.91.91.81.61.71.72.01.81.61.72.12.01.81.72.31.71.81.92.22.32.42.12.71.93.92.72.32.35.22.33.51.95.93.20.00.00.03.40.00.0

None

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value883000.0834000.0844000.0874000.0893000.0968000.0978000.01054000.01096000.0914000.0961000.0993000.01039000.0967000.0952000.0952000.0928000.01096000.01228000.01165000.01187000.01284000.01226000.01275000.01236000.01310000.01324000.01346000.01351000.0851000.0864000.0870000.0841000.0819000.0760000.0782000.0771000.0733000.0744000.0767000.0780000.0781000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value74767575767878787880818182838484848688878788898987878886878877777675746966676766
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.80.80.80.80.80.80.80.90.90.90.90.90.91.01.01.01.11.11.11.11.11.11.11.11.21.11.21.21.31.31.31.31.31.31.31.21.31.2

None

us-gaap:Goodwill

us-gaap:Goodwill


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value280274274274274274274274274268268268268265265264265265265263263263263263263263264265264263152152151133132116116114114114
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.82.82.82.92.92.92.92.92.92.92.93.03.03.03.03.13.13.23.23.33.43.43.43.43.43.53.53.53.52.52.52.52.32.42.12.22.12.22.1

None

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value13111212131415161712131516141515151617161719202122242526282916171818181718171720
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.20.20.20.20.10.10.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.40.40.40.30.30.30.30.30.30.30.30.30.4

None

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2926272626252324240.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.30.30.30.30.30.30.20.30.30.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value252223222221192020
Percentage of EquitySecuritiesFvNi86.384.885.685.184.884.382.683.882.8
Percentage of Assets0.20.20.20.20.20.20.20.20.2
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.04.04.04.04.04.04.04.04.184
Percentage of EquitySecuritiesFvNi13.715.214.414.915.215.717.416.217.2
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value292627262625232424
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.20.30.3
Percentage of Assets us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1142111211201098107410341017994978952958955940926913909896881882876875877864857857832816795791803582576566548538538535539533534527515505431397
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.511.211.511.411.210.810.710.410.310.310.510.410.410.410.310.410.410.410.710.710.911.211.110.910.910.710.710.410.510.69.69.69.59.59.69.810.09.810.00.00.00.09.20.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2.488-2.792-19.026-22.924-25.036-34.932-43.174-49.112-44.756-40.991-22.077-16.664-17.891-19.592-21.52-11.98-11.147-13.871-22.418-13.365-16.223-13.531-17.027-8.75-6.555-11.55-16.765-23.12-21.586-7.126-5.88-3.746-5.207-5.475-6.1043.639-0.213-6.702-5.3354.5075.0482.5961.163-8.204-3.575
Percentage of StockholdersEquity0.2-0.3-1.7-2.1-2.3-3.4-4.2-4.9-4.6-4.3-2.3-1.7-1.9-2.1-2.4-1.3-1.2-1.6-2.5-1.5-1.9-1.5-2.0-1.0-0.8-1.4-2.1-2.9-2.7-0.9-1.0-0.6-0.9-1.0-1.10.7-0.0-1.2-1.00.81.00.50.2-1.9-0.9
Percentage of Assets0.0-0.0-0.2-0.2-0.3-0.4-0.5-0.5-0.5-0.4-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.2-0.3-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.2-0.3-0.3-0.1-0.1-0.1-0.1-0.1-0.10.1-0.0-0.1-0.10.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value577577576576575575575575574574574573573573575573573573576576575575576574574574574573572573346345345318317316315314314313312312311276273
Percentage of StockholdersEquity50.551.951.552.453.655.756.557.958.760.359.960.160.961.963.063.163.965.165.465.865.765.666.767.067.069.070.372.172.371.359.560.060.958.159.058.758.958.458.958.659.360.561.664.068.8
Percentage of Assets5.35.85.96.06.06.06.06.06.16.26.36.36.36.46.56.56.66.87.07.17.17.37.47.37.37.47.57.57.67.55.75.75.85.55.75.85.95.75.90.00.00.05.70.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value0.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.4970.3930.3930.3930.380.380.380.380.380.380.380.380.380.380.3650.365
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value703678696679658627621603585555543536523511501492482471462452442432423414413394385377366358357351343336329323314307299292284277270245215
Percentage of StockholdersEquity61.661.062.161.861.260.761.060.759.858.356.756.155.655.254.954.153.853.552.451.750.549.349.148.448.247.447.247.446.344.661.460.960.661.461.360.058.857.056.254.754.053.853.556.854.1
Percentage of Assets6.56.87.27.06.86.66.56.36.26.06.05.95.85.75.75.65.65.65.65.55.55.55.45.35.25.15.04.94.94.75.95.85.85.85.95.95.95.65.60.00.00.04.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-140.852-141.217-133.996-134.208-134.539-135.01-136.083-136.306-136.597-137.185-138.165-138.474-138.614-139.618-142.5-144.956-148.138-150.303-135.033-140.095-126.361-118.24-119.749-123.659-123.814-125.405-127.102-132.105-126.25-121.663-116.49-117.181-117.325-101.734-103.476-104.61-95.232-76.445-75.293-75.989-75.669-76.778-77.816-82.074-87.796
Percentage of StockholdersEquity-12.3-12.7-12.0-12.2-12.5-13.1-13.4-13.7-14.0-14.4-14.4-14.5-14.7-15.1-15.6-15.9-16.5-17.0-15.3-16.0-14.4-13.5-13.9-14.4-14.4-15.1-15.6-16.6-15.9-15.1-20.0-20.3-20.7-18.5-19.2-19.4-17.8-14.2-14.1-14.2-14.4-14.9-15.4-19.0-22.1
Percentage of Assets-1.3-1.4-1.4-1.4-1.4-1.4-1.4-1.4-1.4-1.5-1.5-1.5-1.5-1.6-1.6-1.7-1.7-1.8-1.6-1.7-1.6-1.5-1.5-1.6-1.6-1.6-1.7-1.7-1.7-1.6-1.9-1.9-2.0-1.8-1.8-1.9-1.8-1.4-1.40.00.00.0-1.40.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0497000.0393000.0393000.0393000.0380000.0380000.0380000.0380000.0380000.0380000.0380000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value577577576576575575575575574574574573573573575573573573576576
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.35.85.96.06.06.06.06.06.16.26.36.36.36.46.56.56.66.87.07.4

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value703678696679658627621603585555543536523511501492482471462452442432423414413394385377366358357351343336329323314307299270
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.56.87.27.06.86.66.56.36.26.06.05.95.85.75.75.65.65.65.65.55.55.55.45.35.25.15.04.94.94.75.95.85.85.85.95.95.95.65.64.9

None

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2488000.0-2792000.0-19026000.0-22924000.0-25036000.0-34932000.0-43174000.0-49112000.0-44756000.0-40991000.0-22077000.0-16664000.0-17891000.0-19592000.0-21520000.0-11980000.0-11147000.0-13871000.0-22418000.0-13365000.0-16223000.0-13531000.0-17027000.0-8750000.0-6555000.0-11550000.0-16765000.0-23120000.0-21586000.0-7126000.0-5880000.0-3746000.0-5207000.0-5475000.0-6104000.03639000.0-213000.0-6702000.0-5335000.01163000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.0-0.0-0.2-0.2-0.3-0.4-0.5-0.5-0.5-0.4-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.2-0.3-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.2-0.3-0.3-0.1-0.1-0.1-0.1-0.1-0.10.1-0.0-0.1-0.10.0

None

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value140141133134134135136136136137138138138139142144148150135140126118119123123125127132126121116117117101103-104.6195767577
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.41.41.41.41.41.41.41.41.51.51.51.51.61.61.71.71.81.61.71.61.51.51.61.61.61.71.71.71.61.91.92.01.81.8-1.91.81.41.41.4

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value364049422239474217404030382730291510323344374.915312418141624192420232518
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating41.345.80.045.624.242.90.048.320.249.60.038.950.337.30.041.122.915.547.50.063.753.28.10.040.231.624.90.040.931.540.10.037.939.728.9

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-459.92-112.235-131.71270-61.1558-17.235-64.255-227.88-108.249-29.281-69.663-112.246-94.003-172.578-137.265-8.08-80.986-76.218-48.057-77.613-120.00161-5.617-59.007-92.66430-53.862-51.843-74.6774.884-51.4359820-8.708
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-525.9-125.50.076.2-65.663.70.0-72.8-268.8-134.00.0-88.4-147.9-126.30.0-189.3-11.7-118.3-112.00.0-111.6-172.4102.60.0-96.3-158.051.90.0-86.7-123.98.10.0155.331.4-13.3

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value83913724-27.84950-101.193-24.4344320368-33.207569658102124-16.5286870-34.29697-72.47368-2.2735-86.329125-24.941116-163.509124-141.38851-115.68339
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating960.5154.20.0-30.154.5-110.80.049.7240.384.30.072.2126.679.20.0171.4-23.999.5103.60.0140.6-104.1113.70.058.2-147.2213.70.0195.0-271.3206.80.081.1-179.160.2

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value364049422239474217404030382730291510323344374.915312418141624192420232518
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating41.345.80.045.624.242.90.048.320.249.60.038.950.337.30.041.122.915.547.50.063.753.28.10.040.231.624.90.040.931.540.10.037.939.728.9

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value24102832302928292825172221201920191819191918181027181719167.649131413131315141414141413
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.311.60.035.032.831.90.033.833.232.20.029.028.127.20.027.627.927.00.028.628.527.00.015.840.426.50.027.724.312.70.023.722.623.30.025.524.323.80.023.022.321.3

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.2850.2860.5250.5040.4930.4920.2020.2150.2210.2210.2780.2970.2690.2690.4780.3170.3130.3130.350.3370.3420.3420.0120.0110.0110.0110.2470.4260.4260.5030.5480.5990.511
Percentage of NetIncomeLoss1.22.81.81.61.61.70.70.70.80.91.61.31.31.32.41.61.61.71.81.71.81.90.10.10.00.11.42.22.56.64.24.13.9
Percentage of InterestAndDividendIncomeOperating0.30.30.00.50.50.50.00.20.30.30.00.40.40.40.00.40.40.40.00.50.50.50.00.00.00.00.00.60.60.80.01.00.9
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0610.007-0.06-0.297-0.553-0.599-0.572-0.479-0.405-0.269-0.12-0.096-0.014
Percentage of NetIncomeLoss0.20.1-0.2-0.9-1.8-2.1-2.0-1.6-1.4-1.0-0.7-0.4-0.1
Percentage of InterestAndDividendIncomeOperating0.10.00.0-0.3-0.6-0.70.0-0.5-0.5-0.30.0-0.1-0.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.1230.1280.1360.1280.1490.1995.0830.1260.133-0.128-1.0310.1330.1380.9580.5650.1620.1710.162-1.6690.1980.1890.195-0.219-0.082-0.008-0.004-0.013-0.1970.037-0.691-0.015-0.016-0.058
Percentage of NetIncomeLoss0.51.20.50.40.50.717.70.40.5-0.5-5.80.60.64.72.90.80.90.9-8.71.01.01.1-1.2-0.8-0.0-0.0-0.1-1.00.2-9.0-0.1-0.1-0.4
Percentage of InterestAndDividendIncomeOperating0.10.10.00.10.20.20.00.10.2-0.20.00.20.21.30.00.20.20.20.00.30.30.30.0-0.1-0.0-0.00.0-0.30.1-1.10.0-0.0-0.1
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value24102832302928292825172221201920191819191918181027181719167.649131413131315141414141413
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.311.60.035.032.831.90.033.833.232.20.029.028.127.20.027.627.927.00.028.628.527.00.015.840.426.50.027.724.312.70.023.722.623.30.025.524.323.80.023.022.321.3
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.87510-4.677-4.572130.926-4.759-7.51223-2.061
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value634000.02675000.0614000.0456000.0563000.02577000.0479000.0503000.0500000.02454000.0449000.0557000.0472000.02166000.01282000.0810000.0674000.01612000.0689000.0721000.0688000.01988000.0704000.0735000.0828000.01254000.0734000.0845000.0762000.01964000.0806000.0761000.0790000.02007000.0808000.0713000.0578000.01145000.01224000.0574000.01470000.0514000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-459.92-112.235-131.71270-61.1558-17.235-64.255-227.88-108.249-29.281-69.663-112.246-94.003-172.578-137.265-8.08-80.986-76.218-48.057-77.613-120.00161-5.617-59.007-92.66430-53.862-51.843-74.6774.884-51.4359820-8.708
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-525.9-125.50.076.2-65.663.70.0-72.8-268.8-134.00.0-88.4-147.9-126.30.0-189.3-11.7-118.3-112.00.0-111.6-172.4102.60.0-96.3-158.051.90.0-86.7-123.98.10.0155.331.4-13.3

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value83913724-27.84950-101.193-24.4344320368-33.207569658102124-16.5286870-34.29697-72.47368-2.2735-86.329125-24.941116-163.509124-141.38851-115.68339
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating960.5154.20.0-30.154.5-110.80.049.7240.384.30.072.2126.679.20.0171.4-23.999.5103.60.0140.6-104.1113.70.058.2-147.2213.70.0195.0-271.3206.80.081.1-179.160.2

None

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.028200.0280.0280.0270.0280.0261525250.045150.064300.042200.070.1880.070.070.170.111201940.1440.1860.102119430.0040.0033.3430.0040.0030.0032.140.059492550
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

None

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.0022311110.0042211100.00320101010109.9779.9459.4859.4739.5969.5969.6759.2829.2529.2289.2189.2079.1848.7668.816.7586.7466.7346.5846.6486.6246.6876.8396.9136.8996.8976.8986.883
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


None
Period End2020-06-302020-03-312019-06-302019-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.07.980.00.00.00.00.00.00.00.00.0170.016100.00.00.00.017-5.460.00.030-15.490.0
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.00.00.00.00.00.00.00.00.00.0100.00.0100.0100.00.00.00.00.0100.0100.00.00.0100.0100.00.0

None

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:SubordinatedDebt


None
Period End2020-06-30
Value0.05
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:SubordinatedDebt0.0

None

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-209.248-106.371212-166.164-326.81459-42.289267-133.11137-149.234290-141.4696-81.397318-94.61380-149.66318-123.63-58.835-158.841177-99.16482-12.3771991.32625-74.83846-15.61523-17.6738.4978.027-7.037.428-7.90610
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:AtmFees

nbtb:AtmFees


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.1365.8545.9356.2776.1565.5255.7045.9065.8165.2735.3475.5575.5184.954.8685.0634.9344.5834.5414.784.6794.2484.2664.444.3574.0723.9964.2764.0443.2422.9553.3783.0632.9622.9113.1352.9282.6682.5462.662.4622.367
Percentage of AtmFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:DebtSecuritiesHeldToMaturitySoldAccumulatedUnrecognizedLoss

nbtb:DebtSecuritiesHeldToMaturitySoldAccumulatedUnrecognizedLoss


None
Period End2020-06-30
Value1000.0
Percentage of DebtSecuritiesHeldToMaturitySoldAccumulatedUnrecognizedLoss100.0

nbtb:GainsFromCallsOnSecuritiesAvailableForSale

nbtb:GainsFromCallsOnSecuritiesAvailableForSale


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value03000.0020000.004000.00000
Percentage of GainsFromCallsOnSecuritiesAvailableForSale0.0100.00.0100.00.0100.00.00.00.00.0

nbtb:GainsFromCallsOnSecuritiesHeldToMaturity

nbtb:GainsFromCallsOnSecuritiesHeldToMaturity


None
Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-30
Value4000.08000.04000.0000
Percentage of GainsFromCallsOnSecuritiesHeldToMaturity100.0100.0100.00.00.00.0

nbtb:InterestExpenseLongTermDebtExcludingJuniorSubordinatedDebentures

nbtb:InterestExpenseLongTermDebtExcludingJuniorSubordinatedDebentures


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value393000.0393000.0484000.0498000.0471000.0422000.0431000.0431000.0452000.0476000.0
Percentage of InterestExpenseLongTermDebtExcludingJuniorSubordinatedDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:LiquidationExpenseRatioOnImpairedCollateral us-gaap:Range

nbtb:LiquidationExpenseRatioOnImpairedCollateral

srt:Maximum


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value00.50000.3500
Percentage of LiquidationExpenseRatioOnImpairedCollateral0.0100.00.00.00.0100.00.00.0

srt:Minimum


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value00.10000.100
Percentage of LiquidationExpenseRatioOnImpairedCollateral0.020.00.00.00.028.60.00.0

nbtb:LoanCollectionAndOtherRealEstateOwned

nbtb:LoanCollectionAndOtherRealEstateOwned


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value728000.01017000.01436000.0976000.0961000.0785000.0738000.01234000.0908000.01337000.01136000.01684000.0664000.01279000.0923000.0985000.0845000.0705000.01027000.0699000.022000.0872000.0702000.0705000.0801000.01040000.0594000.0886000.0421000.0718000.0509000.0614000.0799000.0638000.0793000.0676000.0443000.0719000.0761000.0548000.0668000.01059000.0
Percentage of LoanCollectionAndOtherRealEstateOwned100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:OperatingLeaseRightOfUseAssetAmortization

nbtb:OperatingLeaseRightOfUseAssetAmortization


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1873000.01829000.01843000.01806000.01791000.01799000.00000
Percentage of OperatingLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.00.00.00.00.0

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesBeforeTax

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value165000.0173000.0181000.0190000.0199000.0167000.0155000.0168000.0177000.0188000.0200000.0212000.0225000.0238000.0-1937000.0267000.0280000.0296000.0-2310000.0328000.0336000.0307000.0
Percentage of OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value123000.0130000.0136000.0143000.0149000.0125000.0116000.0126000.0133000.0141000.0123000.0131000.0139000.0147000.0153000.0162000.0171000.0181000.0191000.0200000.0205000.0204000.0
Percentage of OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesTax

nbtb:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value42000.043000.045000.047000.050000.042000.039000.042000.044000.047000.077000.081000.086000.0
Percentage of OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:PaymentsToAcquireEquitySecurities

nbtb:PaymentsToAcquireEquitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value00059000.013000.021000.002000.0000
Percentage of PaymentsToAcquireEquitySecurities0.00.00.0100.0100.0100.00.0100.00.00.00.0

nbtb:RetirementPlanAdministrationFees

nbtb:RetirementPlanAdministrationFees


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9.2147.9417.2187.67.8367.7347.1137.2447.2965.3395.3325.2725.4374.1724.1264.1294.0543.7544.1353.2493.5663.1962.9623.2722.9772.9182.7963.0622.9572.6822.6352.7182.4112.3332.1842.2952.2682.1712.7592.6122.5952.39
Percentage of RetirementPlanAdministrationFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:ServiceChargesOnDepositAccounts

nbtb:ServiceChargesOnDepositAccounts


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.5293.9974.3614.334.2244.2364.5034.5034.2463.9724.3514.2614.1613.9774.274.3544.1663.9394.354.3494.2854.0724.6564.5194.3974.3694.9965.0554.9334.3234.6874.6264.5714.3415.4055.5325.4555.0725.6575.9536.3016.13
Percentage of ServiceChargesOnDepositAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:StockIssuedDuringPeriodSharesEmployeeBenefitPlansAndOtherStockPlans

nbtb:StockIssuedDuringPeriodSharesEmployeeBenefitPlansAndOtherStockPlans


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value20905.054341.09966.017234.029525.066920.011647.014120.031546.072844.013911.018836.067661.0184650.0113530.0151230.0131150.0106670.0244440.0114630.0141960.080362.0189660.08000.0101400.087638.0
Percentage of StockIssuedDuringPeriodSharesEmployeeBenefitPlansAndOtherStockPlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:StockIssuedDuringPeriodValueEmployeeBenefitPlansAndOtherStockPlans

nbtb:StockIssuedDuringPeriodValueEmployeeBenefitPlansAndOtherStockPlans


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-0.152-1.5440.160.227-0.242-1.0260.0550.2020.203-1.0570.2970.2460.014-0.832.5942.9630.804-2.6614.6212.5361.547-1.0555.0530.0750.7660.362
Percentage of StockIssuedDuringPeriodValueEmployeeBenefitPlansAndOtherStockPlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:StockIssuedDuringPeriodValueEmployeeBenefitPlansAndOtherStockPlans us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-0.517-2.303-0.052-0.104-0.713-2.099-0.168-0.089-0.385-2.037-0.0120.106-0.99-3.7120.138-0.219-1.361-4.584-0.4410.145-1.004-2.5641.143-0.08-0.897-1.335
Percentage of StockIssuedDuringPeriodValueEmployeeBenefitPlansAndOtherStockPlans340.1149.2-32.5-45.8294.6204.6-305.5-44.1-189.7192.7-4.043.1-7071.4447.25.3-7.4-169.3172.3-9.55.7-64.9243.022.6-106.7-117.1-368.8

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.3650.7590.2120.3310.4711.0730.2230.2910.5880.980.3090.141.0042.8822.4563.1822.1651.9235.0622.3912.5511.5093.910.1551.6631.697
Percentage of StockIssuedDuringPeriodValueEmployeeBenefitPlansAndOtherStockPlans-240.1-49.2132.5145.8-194.6-104.6405.5144.1289.7-92.7104.056.97171.4-347.294.7107.4269.3-72.3109.594.3164.9-143.077.4206.7217.1468.8

nbtb:WealthManagement

nbtb:WealthManagement


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value6.8237.2737.1226.563
Percentage of WealthManagement100.0100.0100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-874000.0-722000.0-880000.0-876000.0-822000.0-797000.0-899000.0-975000.0-1052000.0-1081000.0-1158000.0-1198000.0-1163000.0-1267000.0-1497000.0-1965000.0-1017000.0-799000.0-703000.0-694000.0-626000.0-531000.0-524000.0-809000.0-962000.0-921000.0-976000.0-1271000.0-1720000.0-1091000.0-642000.0-569000.0-1841000.0644000.0-2536000.0427000.0258000.0254000.0578000.0502000.0236000.0152000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdvertisingExpense

us-gaap:AdvertisingExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value322000.0609000.0952000.0677000.0641000.0503000.01006000.0739000.0700000.0337000.01033000.0665000.0656000.0390000.0823000.0634000.0595000.0504000.0780000.0421000.0734000.0719000.0963000.0403000.0726000.0739000.0759000.0722000.01000000.0723000.0581000.0701000.0805000.0802000.01174000.0685000.01033000.0568000.01266000.0730000.0825000.0667000.0
Percentage of AdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments

us-gaap:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value180000.0-812000.0189000.04036000.0-69000.057000.0-6916000.0412000.091000.072000.01869000.0-4000.02000.00-674000.001000.029000.03044000.03000.026000.014000.033000.038000.014000.07000.013000.0329000.0-61000.01145000.021000.026000.097000.0455000.0
Percentage of AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BankOwnedLifeInsuranceIncome

us-gaap:BankOwnedLifeInsuranceIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1381000.01374000.01236000.01556000.01186000.01377000.01239000.01288000.01217000.01347000.01262000.01284000.01218000.01411000.01297000.01336000.01271000.01291000.0916000.0931000.0928000.01559000.01894000.01095000.0978000.01382000.01145000.0913000.0886000.0849000.0849000.0639000.0618000.0971000.0717000.0674000.0660000.01035000.0872000.0655000.0808000.0981000.0
Percentage of BankOwnedLifeInsuranceIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value41666-57.2538412-3.8366.32222-7.096-0.085
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value00.540.270.2600.520.260.250
Percentage of CommonStockDividendsPerShareDeclared0.0100.0100.0100.00.0100.0100.0100.00.0

us-gaap:CommunicationsAndInformationTechnology

us-gaap:CommunicationsAndInformationTechnology


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.0794.2334.7194.4924.6934.4144.4314.4344.5084.2794.2424.3994.2294.1984.1414.1834.1214.053.994.2074.2884.1034.0924.0294.0154.0013.9854.0593.8543.4553.3963.3523.4313.2583.1863.0543.1172.9142.8932.9713.2653.218
Percentage of CommunicationsAndInformationTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value180000.0-812000.0189000.04036000.0-69000.057000.0-6916000.0412000.091000.072000.01869000.0-4000.02000.0
Percentage of DebtAndEquitySecuritiesRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, nbtb:GainsLossesOnAvailableForSaleSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0-3000.0-158000.0-20000.0099000.0-6622000.00001867000.04000.0-2000.0
Percentage of DebtAndEquitySecuritiesRealizedGainLoss0.00.4-83.6-0.5-0.0173.795.70.00.00.099.9-100.0-100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value03000.0053000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGain0.0100.00.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLoss


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value03000.00-99000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGainLoss0.0100.00.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value000152000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss0.00.00.0100.0

us-gaap:DebtSecuritiesHeldToMaturitySoldAmount

us-gaap:DebtSecuritiesHeldToMaturitySoldAmount


None
Period End2020-06-302019-06-302018-12-312018-09-302017-12-312017-09-30
Value1000000.00000800000.0
Percentage of DebtSecuritiesHeldToMaturitySoldAmount100.00.00.00.00.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value13000.013000.01000.014000.018000.017000.0-80000.044000.044000.044000.0-15000.026000.020000.020000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value368000.0368000.0-1893000.0658000.0639000.0639000.0-705000.0242000.0251000.0251000.0-1238000.0454000.0415000.0415000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit2830.82830.8-189300.04700.03550.03758.8881.2550.0570.5570.58253.31746.22075.02075.0

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:DefinedBenefitPlanContributionsByEmployer


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value0000000000005600000.0
Percentage of DefinedBenefitPlanContributionsByEmployer0.00.00.00.00.00.00.00.00.00.00.00.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2105000.02105000.01865000.01869000.01873000.01873000.02114000.02119000.02123000.02123000.01983000.01976000.01985000.01985000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value55000.055000.043000.067000.081000.081000.082000.082000.082000.082000.098000.088000.086000.086000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value809000.0809000.0994000.0986000.0981000.0981000.0893000.0912000.0920000.0920000.01041000.01043000.01042000.01042000.0
Percentage of DefinedBenefitPlanInterestCost1470.91470.92311.61471.61211.11211.11089.01112.21122.01122.01062.21185.21211.61211.6

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value70000.070000.046000.082000.0101000.0100000.0128000.0129000.0129000.0129000.0173000.0117000.0109000.0109000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-482000.0-482000.0251000.0206000.0182000.0182000.0-593000.0-550000.0-532000.0-532000.0-134000.0-150000.0-126000.0-126000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-688.6-688.6545.7251.2180.2182.0-463.3-426.4-412.4-412.4-77.5-128.2-115.6-115.6

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2000.02000.02000.01000.02000.02000.02000.03000.03000.03000.03000.03000.03000.03000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value446000.0446000.0422000.0431000.0435000.0435000.0403000.0415000.0420000.0420000.0378000.0329000.0402000.0402000.0
Percentage of DefinedBenefitPlanServiceCost22300.022300.021100.043100.021750.021750.020150.013833.314000.014000.012600.010966.713400.013400.0

us-gaap:DepreciationNonproduction

us-gaap:DepreciationNonproduction


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2474000.02478000.02391000.02374000.02375000.02357000.02323000.02313000.02317000.02327000.02297000.02271000.02239000.02249000.02258000.02254000.02267000.02244000.02152000.02217000.02125000.02152000.02152000.02067000.02059000.02046000.02063000.02057000.02037000.01791000.01640000.01616000.01531000.01489000.01440000.01371000.01328000.01324000.01336000.01328000.0
Percentage of DepreciationNonproduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:Nondesignated, us-gaap:OtherIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-4000.0143000.0199000.0-10000.019000.0-87000.0-230000.0-13000.0320000.0197000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCash

us-gaap:DividendsCash


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.0022311110.0042211100.00320101010109.9779.9459.4859.4739.5969.5969.6759.2829.2529.2289.2189.2079.1848.7668.816.758-6.746-6.734-6.584-6.64847-6.687-6.839-6.913-6.899-6.897-6.898-6.883
Percentage of DividendsCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.0022311110.0042211100.00320101010109.9779.9459.4859.4739.5969.5969.6759.2829.2529.2289.2189.2079.1848.7668.816.758-6.746-6.734-6.584-6.64847-6.687-6.839-6.913-6.899-6.897-6.898-6.883
Percentage of DividendsCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquipmentExpense

us-gaap:EquipmentExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.7794.6424.8214.4874.5184.7574.5294.3194.1514.0384.0013.7333.7933.6983.6323.6563.5473.463.4913.3523.3163.2493.2113.1993.1323.1163.0132.9882.912.5822.4032.4352.4092.382.2062.2882.182.192.1232.0532.0412.1
Percentage of EquipmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value177000.0-815000.0181000.04012000.0-69000.0156000.0-294000.0412000.091000.072000.0
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0003966000.0000511000.0044000.0
Percentage of EquitySecuritiesFvNiRealizedGainLoss0.00.00.0100.00.00.00.0100.00.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value177000.0-815000.0181000.046000.0-69000.0156000.0-294000.0-99000.091000.028000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-11000.0189000.038000.060000.051000.0260000.036000.060000.040000.0407000.0-72000.0-171000.0-54000.0-1472000.0-1055000.0000
Percentage of ExcessTaxBenefitFromShareBasedCompensationOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FederalDepositInsuranceCorporationPremiumExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value993000.0311000.00-20000.0949000.01017000.01135000.01223000.01092000.01201000.01196000.01257000.01136000.01178000.01273000.01287000.01293000.01258000.01312000.01355000.01280000.01198000.01303000.01134000.01229000.01278000.01272000.01285000.01273000.01130000.01020000.0939000.0942000.0931000.0886000.0920000.0965000.01496000.01347000.01621000.01560000.01553000.0
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:AccountingStandardsUpdate201613


None
Period End2020-06-302020-03-31
Value2037000.02587000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AccountingStandardsUpdate201613, us-gaap:CommercialPortfolioSegment


None
Period End2020-06-302020-03-31
Value113000.0228000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery5.58.8

us-gaap:AccountingStandardsUpdate201613, us-gaap:ConsumerPortfolioSegment


None
Period End2020-06-302020-03-31
Value1810000.02235000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery88.986.4

us-gaap:AccountingStandardsUpdate201613, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value114000.0124000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery5.64.8

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:AccountingStandardsUpdate201613


None
Period End2020-06-302020-03-31
Value7.3778.226
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AccountingStandardsUpdate201613, us-gaap:CommercialPortfolioSegment


None
Period End2020-06-302020-03-31
Value0.7091.02
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs9.612.4

us-gaap:AccountingStandardsUpdate201613, us-gaap:ConsumerPortfolioSegment


None
Period End2020-06-302020-03-31
Value6.1786.891
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs83.783.8

us-gaap:AccountingStandardsUpdate201613, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value0.490.315
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs6.63.8

us-gaap:FinancingReceivableModificationsNumberOfContracts2

us-gaap:FinancingReceivableModificationsNumberOfContracts2


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value7.08.06.03.08.020.021.08.02.016.019.06.011.03.07.014.04.016.012.028.020.017.011.028.0
Percentage of FinancingReceivableModificationsNumberOfContracts2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsNumberOfContracts2 us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ConsumerPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-30
Value01.02.01.06.011.010.08.01.08.010.05.05.02.04.010.02.012.07.012.012.08.08.0
Percentage of FinancingReceivableModificationsNumberOfContracts20.012.533.333.375.055.047.6100.050.050.052.683.345.566.757.171.450.075.058.342.960.047.172.7

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value7.07.02.02.02.06.09.0005.07.01.04.01.03.04.02.04.05.016.06.09.08.03.0
Percentage of FinancingReceivableModificationsNumberOfContracts2100.087.533.366.725.030.042.90.00.031.236.816.736.433.342.928.650.025.041.757.130.00.047.127.3

us-gaap:FinancingReceivableModificationsNumberOfContracts2 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConsumerPortfolioSegment, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value01.0
Percentage of FinancingReceivableModificationsNumberOfContracts20.012.5

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value294000.0779000.0592000.0240000.0518000.01252000.01362000.089000.018000.0855000.0905000.0747000.04147000.0215000.0327000.0682000.0224000.01389000.0473000.01993000.03239000.01007000.0348000.02787000.0
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2 us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ConsumerPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-30
Value044000.046000.037000.0137000.0394000.0377000.089000.013000.0122000.0451000.0229000.0229000.077000.0176000.0556000.073000.0952000.0244000.0802000.01128000.0263000.0187000.0
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment20.05.67.815.426.431.527.7100.072.214.349.830.75.535.853.881.532.668.551.640.234.826.153.7

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-30
Value294000.0735000.0101000.0203000.0381000.0405000.0775000.000323000.0406000.0518000.0346000.0138000.0151000.0126000.0151000.0437000.0231000.01191000.0770000.0460000.0161000.0
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.094.417.184.673.632.356.90.00.037.844.969.38.364.246.218.567.431.548.859.823.845.746.3

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConsumerPortfolioSegment, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value044000.0
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment20.05.6

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value269000.0735000.0561000.0216000.0497000.01235000.01367000.090000.019000.0765000.0880000.0714000.04213000.0219000.0366000.0810000.0226000.01566000.0-702000.02156000.02796000.01210000.0429000.02787000.0
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2 us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ConsumerPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-30
Value044000.032000.030000.0128000.0394000.0379000.090000.013000.0123000.0444000.0196000.0230000.078000.0196000.0580000.074000.01035000.0343000.0863000.01071000.0300000.0250000.0
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment20.06.05.713.925.831.927.7100.068.416.150.527.55.535.653.671.632.766.1-48.940.038.324.858.3

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value269000.0691000.090000.0186000.0369000.0388000.0776000.000323000.0388000.0518000.0346000.0141000.0170000.0230000.0152000.0500000.019000.01293000.0370000.0800000.0560000.0179000.0
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment2100.094.016.086.174.231.456.80.00.042.244.172.58.264.446.428.467.331.9-2.760.013.20.046.341.7

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConsumerPortfolioSegment, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value044000.0
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment20.06.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1

us-gaap:FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value27.017.010.019.022.020.012.022.021.023.011.019.019.0003.017.01.01.02.006.02.03.0
Percentage of FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1.01.000001.001.01.0001.01.01.01.01.0
Percentage of FinancingReceivableModificationsSubsequentDefaultNumberOfContracts13.75.90.00.00.00.08.30.04.84.30.00.05.30.00.033.35.9

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-30
Value26.016.04.09.08.08.09.05.07.08.07.06.04.0001.06.01.01.02.06.01.0
Percentage of FinancingReceivableModificationsSubsequentDefaultNumberOfContracts196.394.140.047.436.440.075.022.733.334.863.631.621.10.00.033.335.3100.0100.0100.0100.050.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CommercialPortfolioSegment, nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value01.0
Percentage of FinancingReceivableModificationsSubsequentDefaultNumberOfContracts10.05.9

us-gaap:CommercialPortfolioSegment, us-gaap:CommercialRealEstate


None
Period End2020-06-30
Value1.0
Percentage of FinancingReceivableModificationsSubsequentDefaultNumberOfContracts13.7

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value1673000.01190000.0393000.0914000.0925000.01015000.0818000.01214000.01152000.01574000.0824000.01181000.01183000.000242000.01251000.0175000.034000.0174000.00217000.073000.0343000.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value168000.0387000.0000080000.0058000.0200000.000329000.0145000.01573000.0169000.067000.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment110.032.50.00.00.00.09.80.05.012.70.00.027.80.00.069.85.4

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-30
Value1505000.0803000.0116000.0572000.0429000.0398000.0547000.0398000.0599000.0504000.0485000.0546000.0251000.000121000.0664000.0200000.034000.0174000.0429000.048000.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment190.067.529.562.646.439.266.932.852.032.058.946.221.20.00.050.053.1114.3100.0100.0197.765.8

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CommercialPortfolioSegment, nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value0387000.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment10.032.5

us-gaap:CommercialPortfolioSegment, us-gaap:CommercialRealEstate


None
Period End2020-06-30
Value168000.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment110.0

us-gaap:GainLossOnSaleOfLoansAndLeases

us-gaap:GainLossOnSaleOfLoansAndLeases


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value587000.0242000.0311000.0219000.0168000.088000.0105000.094000.030000.057000.057000.069000.0177000.046000.040000.0232000.0178000.049000.0131000.05000.039000.064000.014000.0003000.0120000.0351000.0337000.0480000.01117000.0458000.01335000.0-441000.0331000.0-2000.000-239000.0-194000.0-215000.0-263000.0
Percentage of GainLossOnSaleOfLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:GainsLossesOnSalesOfOtherRealEstate


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value96000.0-11000.0-405000.023000.0-2000.0157000.0360000.0-320000.016000.0174000.032000.0-515000.0861000.0-157000.062000.097000.0222000.0306000.096000.0162000.01079000.00108000.0139000.0110000.0102000.0452000.083000.0420000.0151000.0386000.0185000.0664000.0-247000.03243000.0-251000.0-204000.0-257000.0-173000.0-230000.04000.0-118000.0
Percentage of GainsLossesOnSalesOfOtherRealEstate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInDeposits


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value951276-155.346149-23.953249-73.07996-49.479223-60.6215-169.76721124208-164.6263004.216229-107.958179-15.334272-26.31178-112.914124-137.787118-21.666117-106.695146-42.72150-144.329124-68.269101-75.84884
Percentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InsuranceAgencyManagementFee

us-gaap:InsuranceAgencyManagementFee


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value3292000.04269000.03547000.04744000.0
Percentage of InsuranceAgencyManagementFee100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value878990929391908884808078757473727169686967676969686869696960606158585959606062636465
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeSecuritiesAvailableForSale

us-gaap:InterestAndDividendIncomeSecuritiesAvailableForSale


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.65.7535.6395.7116.0315.9226.3326.6597.0036.9267.0597.2787.2187.0096.0576.0135.9765.9875.2045.1255.1444.9455.06.0956.6126.7576.7076.526.5375.7465.9816.557.1087.3667.4617.7717.9477.9047.9448.6219.55610
Percentage of InterestAndDividendIncomeSecuritiesAvailableForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeSecuritiesHeldToMaturity

us-gaap:InterestAndDividendIncomeSecuritiesHeldToMaturity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.9264.0914.2134.5865.0895.2174.3443.4622.8112.6252.6712.7462.7362.7812.5242.5442.4962.2882.3172.3182.3152.2832.3571.3530.7830.7680.7830.8040.5480.5250.5490.5720.6170.640.6610.680.7450.80.8450.9081.0781.137
Percentage of InterestAndDividendIncomeSecuritiesHeldToMaturity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseDeposits


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.8129.1041010108.8266.9776.1575.0793.9313.8173.6483.5363.4743.5573.6073.6053.5973.6133.5543.5173.5733.8563.4983.03.2843.8453.9994.2964.154.3274.5444.8345.1435.335.3526.0516.2876.7277.1747.9998.454
Percentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseJuniorSubordinatedDebentures


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value695000.0926000.01021000.01095000.01141000.01168000.01110000.01089000.01040000.0901000.0836000.0810000.0772000.0726000.0707000.0660000.0641000.0619000.0576000.0560000.0545000.0540000.0545000.0544000.0538000.0538000.0545000.0551000.0560000.0428000.0411000.0436000.0434000.0449000.0409000.0394000.0400000.0889000.01034000.01046000.01033000.01027000.0
Percentage of InterestExpenseJuniorSubordinatedDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestExpenseShortTermBorrowings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.9721.7971.7071.9892.763.2373.1313.02.4551.9661.6211.871.3661.1390.6410.7610.5790.3280.2220.2960.1440.1210.1430.2620.2090.2310.1740.2320.0670.0420.0390.060.0480.0410.0390.0560.0520.0580.0640.0910.1230.124
Percentage of InterestExpenseShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseSubordinatedNotesAndDebentures

us-gaap:InterestExpenseSubordinatedNotesAndDebentures


None
Period End2020-06-302019-06-30
Value128000.00
Percentage of InterestExpenseSubordinatedNotesAndDebentures100.00.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value614771717171727166656564626159606058575958585758585756575546454745444445444543434441
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value394039393839383837363432323331323232333030303028312928292927262624262525242523242422
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value657070696668686664646360606157596058605957575669625755565660484947484745434547444442
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome

us-gaap:NoninterestIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value353536393433253334313130302828292928323128262726462625272525212120232020192022202020
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:NoninterestIncomeOtherOperatingIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.4565.5276.7384.2914.2393.5853.8873.0484.4013.8921.9223.9453.1862.9383.7734.1134.6263.4494.5773.2973.6992.6212.4352.3763.3562.3461.873.1292.3243.1822.9632.4072.3313.7111.4641.3291.2081.3441.7511.611.4821.434
Percentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OccupancyNet

us-gaap:OccupancyNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.0655.9955.6535.3355.4436.2755.2845.385.5356.1195.285.1745.1846.175.165.0355.2545.4915.2915.3265.4126.0665.2565.2115.4356.2265.2625.2625.2194.9774.2654.4374.2224.4913.9673.8873.9874.5223.8233.7093.6664.152
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.94816-0.5771.898108.47616-4.223-3.882-11.449-7.9970.971.7
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.28163.8982.1129.8968.2425.938-4.356-3.748-10.711-5.4131.2271.7011.928-9.54-0.8332.7248.547-9.0532.858-2.6923.496-8.277-2.1954.9955.2156.355-1.534-14.46-1.246-2.1341.4610.2680.629-9.7433.8526.489-1.367-9.842-0.5412.4521.433
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value5.28163.8982.1129.8968.2425.938-4.356-3.748-10.711-5.4131.2271.7011.928-9.54-0.8332.7248.547-9.0532.858-2.6923.496-8.277-2.1954.9955.2156.355-1.534-14.46-1.246-2.1341.4610.2680.629
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-285000.0-286000.0-4523000.0-504000.0-493000.0-492000.09217000.0-215000.0-221000.0-221000.0-2109000.0-297000.0-269000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value03000.0020000.00-99000.0-6622000.0000-1867000.0-4000.02000.00614000.001000.029000.03044000.03000.026000.014000.034000.038000.014000.07000.013000.0329000.0-61000.01145000.021000.026000.097000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax0.0100.00.0100.00.0100.0100.00.00.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value02000.0015000.00-74000.0-4967000.00001154000.0-2000.01000.00-412000.00019000.02496000.0-200000.0-205000.0-204000.0198000.059000.08000.04000.013000.0197000.0-37000.0691000.015000.016000.058000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax0.0100.00.0100.00.0100.0100.00.00.00.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value01000.005000.00-25000.0-1655000.0000717000.0-2000.01000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax0.0100.00.0100.00.0100.0100.00.00.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-81000.0-10000.080000.0395000.0738000.0799000.0763000.0638000.0540000.0-359000.0196000.0155000.023000.082000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument, nbtb:InterestIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-81000.0-10000.080000.0395000.0738000.0799000.0763000.0638000.0540000.0359000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0-100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-61000.0-7000.060000.0297000.0553000.0599000.0572000.0479000.0405000.0269000.0120000.096000.014000.0-50000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-20000.0-3000.020000.098000.0185000.0200000.0191000.0159000.0135000.090000.076000.059000.09000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value381000.0381000.0701000.0672000.0657000.0656000.0269000.0286000.0295000.0295000.0502000.0480000.0435000.0435000.0826000.0519000.0513000.0512000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value285000.0286000.0525000.0504000.0493000.0492000.0202000.0215000.0221000.0221000.0278000.0297000.0269000.0269000.0478000.0317000.0313000.0313000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value96000.095000.0176000.0168000.0164000.0164000.067000.071000.074000.074000.0224000.0183000.0166000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-19000.0-255000.016000.09000.0-314000.0-170000.0-429000.0175000.0424000.01048000.0776000.0-63000.0-434000.0331000.02182000.0782000.0-62000.00000
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-19000.0-255000.016000.09000.0-314000.0-170000.0-429000.0175000.0424000.01048000.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-14000.0-191000.012000.07000.0-236000.0-127000.0-321000.0131000.0318000.0786000.0475000.0-40000.0-268000.0204000.01333000.0478000.0-38000.00000
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-5000.0-64000.04000.02000.0-78000.0-43000.0-108000.044000.0106000.0262000.0377000.035000.0-157000.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.43321-0.9512.36131114-5.798-5.353-15.454-11.6341.3552.5280.836-22.627-2.9313.7313-6.5263.801-5.277-4.8424.87-3.6938.2678.623-7.668-6.927-24.712-1.752-4.2691.463-0.3090.644-0.9625.97810-2.651-12.341-0.0623.7332.01
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.82516-0.7131.77108.27710-4.349-4.015-11.59-6.9660.8371.5620.497-13.825-1.792.2788.072-3.9872.323-3.2232.9593.372-2.1244.9925.208-4.627-4.184-14.923-1.058-2.5710.878-0.1850.386-0.5813.6096.274-1.6-7.447-0.0422.2541.213
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1608000.05335000.0-238000.0590000.03348000.02759000.03655000.0-1449000.0-1338000.0-3864000.0-4668000.0518000.0966000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherInterestAndDividendIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value650000.0829000.0924000.01002000.0842000.0884000.0885000.0834000.0781000.0766000.0803000.0737000.0654000.0619000.0627000.0538000.0454000.0449000.0469000.0401000.0395000.0480000.0480000.0513000.0502000.0537000.0518000.0472000.0488000.0403000.0403000.0348000.0413000.0392000.0383000.0342000.0440000.0493000.0627000.0482000.0469000.0596000.0
Percentage of OtherInterestAndDividendIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense

us-gaap:OtherNoninterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.9166.9576.318.3744.635.1266.2734.5774.3324.4155.7115.4175.6175.1753.9695.3185.9244.4415.4998.4265.8724.9134.6075.4014.9115.1735.4375.3035.14.054.1224.5524.1614.0345.1283.943.1963.3043.7193.383.5232.6
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0230.0230.0240.0230.0240.0220.0240.0230.0220.0220.098-0.0010.01
Percentage of OtherNoninterestExpense0.60.30.40.30.50.40.40.50.50.51.7-0.00.2

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.3580.3580.6770.6490.6330.6340.2450.2630.2730.2730.4040.4810.425
Percentage of OtherNoninterestExpense9.15.110.77.813.712.43.95.76.36.27.18.97.6

us-gaap:PaymentsForOriginationOfMortgageLoansHeldForSale

us-gaap:PaymentsForOriginationOfMortgageLoansHeldForSale


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5946614646263127
Percentage of PaymentsForOriginationOfMortgageLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromLoansAndLeases


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value38511612557799.9757.55234219691251061048253127739021108152332016967857781021743911231857474323-2.382-20.36216-1.539
Percentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2000.01166000.026000.0156000.0210000.01230000.0101000.057000.06000.01729000.00759000.010000.02813000.0259000.0285000.0189000.02654000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1668892395763303.5026.982910.954
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.5263239523960616368
Percentage of PaymentsToAcquireFederalHomeLoanBankStock100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireHeldToMaturitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value55319.5111212815114384217.49411355.9436620609.471203322181516125.2178.8133.82683.1315.2345.1013.8486.016.1565.3884.9464.2468.257111612
Percentage of PaymentsToAcquireHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value238000.03348000.02629000.01436000.0672000.01910000.03146000.02219000.0851000.01186000.02514000.01573000.01335000.01269000.0-1344000.02569000.0458000.01625000.03194000.02328000.01627000.01044000.02387000.03118000.02384000.01114000.02357000.01137000.01266000.01006000.02189000.02036000.01267000.01502000.04277000.03565000.01083000.01029000.02138000.01625000.01415000.01332000.0
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProFormaWeightedAverageSharesOutstandingDiluted

us-gaap:ProFormaWeightedAverageSharesOutstandingDiluted


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value4344444444444443434344434343444444444444444436333333
Percentage of ProFormaWeightedAverageSharesOutstandingDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0184000.0182000.0371000.0-32000.0204000.0156000.0259000.0209000.0672000.0297000.01005000.024000.01983000.01798000.0
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value65834789429445887351856858787489867469104646157585267627912410919217510510018111210214591134140145
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7639577757302727271817333219243525151718231917119.7285.1079.8317.769.8826.947.0787.773106.4067.4210161215305015
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.00.00.0261010.00.00.04.791
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt0.00.00.00.00.0100.0100.00.00.00.0100.0

us-gaap:ProceedsFromSaleOfFederalHomeLoanBankStock

us-gaap:ProceedsFromSaleOfFederalHomeLoanBankStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value13353548504859635271716456565044303321205.6041315262115270.0-1.9891.989
Percentage of ProceedsFromSaleOfFederalHomeLoanBankStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ProceedsFromSaleOfLoansHeldForSale

us-gaap:ProceedsFromSaleOfLoansHeldForSale


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5050664439252923252324263524252622222126177.1113.0262.1021.4830.43912202315279.1481414100.780.4342.04313291821
Percentage of ProceedsFromSaleOfLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfOtherRealEstate

us-gaap:ProceedsFromSaleOfOtherRealEstate


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.6970.080.4140.390.0380.7011.4670.8420.7480.5340.4870.3473.992.431.4820.571.3753.2080.8590.4521.8990.6980.749-16.776180.9021.7541.3481.0991.0231.2050.751.0240.6370.4581.120.3250.6280.690.8180.8670.811
Percentage of ProceedsFromSaleOfOtherRealEstate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProfessionalFees

us-gaap:ProfessionalFees


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.4033.8974.2233.5353.3593.6683.9683.583.3363.4923.7513.1073.6093.0323.7123.3433.3313.2313.3783.1373.3953.4973.5643.6953.7523.4153.9693.2023.2372.9012.6152.7352.3882.7252.5522.2152.0882.0662.4892.0682.1912.284
Percentage of ProfessionalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:ProvisionForLoanLeaseAndOtherLosses

us-gaap:AccountingStandardsUpdate201613


None
Period End2020-06-30
Value18
Percentage of ProvisionForLoanLeaseAndOtherLosses100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AccountingStandardsUpdate201613, us-gaap:CommercialPortfolioSegment


None
Period End2020-06-30
Value8.77
Percentage of ProvisionForLoanLeaseAndOtherLosses46.5

us-gaap:AccountingStandardsUpdate201613, us-gaap:ConsumerPortfolioSegment


None
Period End2020-06-30
Value6.916
Percentage of ProvisionForLoanLeaseAndOtherLosses36.7

us-gaap:AccountingStandardsUpdate201613, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-30
Value3.154
Percentage of ProvisionForLoanLeaseAndOtherLosses16.7

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value18297.2775.807
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccountingStandardsUpdate201613


None
Period End2020-03-31
Value29
Percentage of ProvisionForLoanLossesExpensed100.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AccountingStandardsUpdate201613, us-gaap:CommercialPortfolioSegment


None
Period End2020-03-31
Value15
Percentage of ProvisionForLoanLossesExpensed53.5

us-gaap:AccountingStandardsUpdate201613, us-gaap:ConsumerPortfolioSegment


None
Period End2020-03-31
Value10
Percentage of ProvisionForLoanLossesExpensed34.0

us-gaap:AccountingStandardsUpdate201613, us-gaap:ResidentialPortfolioSegment


None
Period End2020-03-31
Value3.712
Percentage of ProvisionForLoanLossesExpensed12.5

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value469000.0421000.0335000.089000.092000.0-138000.0-51000.093000.0430000.0407000.01227000.01043000.0479000.0484000.0475000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value634000.02675000.0614000.0456000.0563000.02577000.0479000.0503000.0500000.02454000.0449000.0557000.0472000.02166000.01282000.0810000.0674000.01612000.0689000.0721000.0688000.01988000.0704000.0735000.0828000.01254000.0734000.0845000.0762000.01964000.0806000.0761000.0790000.02007000.0808000.0713000.0578000.01145000.01224000.0574000.01470000.0514000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value634000.02675000.0614000.0456000.0563000.02577000.0479000.0503000.0500000.02454000.0449000.0557000.0472000.02261000.01282000.0810000.0674000.01612000.0689000.0721000.0688000.01988000.0704000.0735000.0828000.01254000.0734000.0845000.0762000.01964000.0806000.0761000.0790000.02007000.0808000.0713000.0578000.01145000.01224000.0574000.01470000.0514000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0104.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0000000000000-95000.00000000000000000000000000000
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation0.00.00.00.00.00.00.00.00.00.00.00.00.0-4.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SuppliesAndPostageExpense

us-gaap:SuppliesAndPostageExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1455000.01636000.01744000.01667000.01577000.01591000.01564000.01563000.01504000.01573000.01604000.01432000.01640000.01608000.01507000.01438000.01676000.01547000.01545000.01576000.01627000.01619000.01762000.01733000.01803000.01685000.01677000.01640000.01656000.01590000.01647000.01597000.01574000.01671000.01655000.01531000.01342000.01545000.01564000.01542000.01454000.01542000.0
Percentage of SuppliesAndPostageExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TransferToOtherRealEstate

us-gaap:TransferToOtherRealEstate


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value01017000.0133000.0308000.021000.0325000.0277000.084000.0132000.0780000.0754000.0345000.0936000.03946000.04500000.0755000.0656000.0952000.0594000.0496000.01141000.01062000.03195000.0350000.0325000.0460000.03961000.0-2246000.02072000.0959000.0
Percentage of TransferToOtherRealEstate0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


None
Period End2020-06-302020-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.07.980.00.00.0170.0160.00.00.06.9990.00.0-15.490.061-9.338-18.795-2.3690.0-0.4770.00.0
Percentage of TreasuryStockValueAcquiredCostMethod0.0100.00.00.00.0100.00.0100.00.00.00.0100.00.00.0100.00.0100.0100.0100.0100.00.0100.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.07.980.00.00.0170.0160.00.00.06.9990.00.061-9.338-18.795-2.3690.0-0.477
Percentage of TreasuryStockValueAcquiredCostMethod0.0100.00.00.00.0100.00.0100.00.00.00.0100.00.00.0100.0100.0100.0100.00.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value291000.0295000.0313000.0311000.0296000.0337000.0318000.0312000.0320000.0322000.0371000.0362000.0354000.0365000.0570000.0523000.0489000.0523000.0498000.0505000.0424000.0393000.0384000.0342000.0301000.0379000.0243000.0276000.0315000.0217000.0277000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:AmortizedCostsOfSecuritiesAvailableForSaleAndHeldToMaturityPledgedAsCollateralForRepurchaseAgreements

nbtb:AmortizedCostsOfSecuritiesAvailableForSaleAndHeldToMaturityPledgedAsCollateralForRepurchaseAgreements


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value249270189186197207215196226256
Percentage of AmortizedCostsOfSecuritiesAvailableForSaleAndHeldToMaturityPledgedAsCollateralForRepurchaseAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

nbtb:DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities

us-gaap:InterestRateSwap, us-gaap:Nondesignated


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value12811841523817
Percentage of DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities100.0100.0100.0100.0100.0100.0

nbtb:FinancingReceivableIndividuallyEvaluatedForImpairmentNumberOfRelationships

nbtb:FinancingReceivableIndividuallyEvaluatedForImpairmentNumberOfRelationships


None
Period End2020-06-302020-03-31
Value01.0
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairmentNumberOfRelationships0.0100.0

nbtb:FinancingReceivableRevolvingConvertedToTermLoan

nbtb:FinancingReceivableRevolvingConvertedToTermLoan


None
Period End2020-03-31
Value117
Percentage of FinancingReceivableRevolvingConvertedToTermLoan100.0

nbtb:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-03-31
Value0.073
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.1

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-03-31
Value61
Percentage of FinancingReceivableRevolvingConvertedToTermLoan52.5

nbtb:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-03-31
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-03-31
Value0.002
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-03-31
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-03-31
Value0.01
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-03-31
Value61
Percentage of FinancingReceivableRevolvingConvertedToTermLoan52.5

nbtb:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-03-31
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:CommercialAndIndustrial


None
Period End2020-03-31
Value22
Percentage of FinancingReceivableRevolvingConvertedToTermLoan19.3

nbtb:ConsumerFinancingReceivable


None
Period End2020-03-31
Value0.012
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:RealEstateLoan


None
Period End2020-03-31
Value32
Percentage of FinancingReceivableRevolvingConvertedToTermLoan28.1

nbtb:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Doubtful


None
Period End2020-03-31
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-03-31
Value22
Percentage of FinancingReceivableRevolvingConvertedToTermLoan19.3

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-03-31
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-03-31
Value0.027
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-03-31
Value24
Percentage of FinancingReceivableRevolvingConvertedToTermLoan20.5

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-03-31
Value8.92
Percentage of FinancingReceivableRevolvingConvertedToTermLoan7.6

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-03-31
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value007.07.024.060.0118.061.033.032.032.025.09.04.04.04.04.04.04.04.04.04.010.00
Percentage of HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value000014.030.086.041.025.024.0
Percentage of HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear0.00.00.00.058.350.072.967.275.875.0

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1.04.07.011.01.0032.0163.0138.0145.059.032.046.092.0172.09.02.04.016.012.098.0113.0112.06.0
Percentage of HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.04.04.08.00030.0134.0110.040.0
Percentage of HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear100.0100.057.172.70.00.093.882.279.767.8

nbtb:JuniorSubordinatedDebtObligationsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

nbtb:JuniorSubordinatedDebtObligationsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


None
Period End2020-06-302019-12-31
Value101105
Percentage of JuniorSubordinatedDebtObligationsFairValueDisclosure100.0100.0

nbtb:LoansAndLeasesReceivableCollateralDependentLoans

nbtb:LoansAndLeasesReceivableCollateralDependentLoans


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4200000.000100000.0200000.0200000.025000.025000.0100000.0
Percentage of LoansAndLeasesReceivableCollateralDependentLoans100.00.00.0100.0100.0100.0100.0100.0100.0

nbtb:LoansAndLeasesReceivableCollateralDependentLoansSpecificReserves

nbtb:LoansAndLeasesReceivableCollateralDependentLoansSpecificReserves


None
Period End2020-06-302019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0011000.025000.025000.025000.025000.0100000.0
Percentage of LoansAndLeasesReceivableCollateralDependentLoansSpecificReserves0.00.0100.0100.0100.0100.0100.0100.0

nbtb:LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust

nbtb:LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value646484847373
Percentage of LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust100.0100.0100.0100.0100.0100.0

nbtb:LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustAndSubordinatedDebt

nbtb:LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustAndSubordinatedDebt


None
Period End2020-06-302019-12-31
Value6464
Percentage of LongTermDebtExcludingJuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustAndSubordinatedDebt100.0100.0

nbtb:SavingsNowAndMoneyMarket

nbtb:SavingsNowAndMoneyMarket


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5000459843124405428043704076419941364230407641413962415339053921382640073697375335833685341735143363348232233343325633452558259924832492238123652288241822912269
Percentage of SavingsNowAndMoneyMarket100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nbtb:TimeDepositsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

nbtb:TimeDepositsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:CarryingReportedAmountFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value707843861860976922930
Percentage of TimeDepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value721847858857973915920
Percentage of TimeDepositsFairValueDisclosure101.9100.599.699.799.799.398.9

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-31
Value252223222221192020171722212020191819151526283837484756586984807787949394102
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-31
Value1241112310219891022979102211281219128412531352136013601330129612791261117310591116105798710161340133813141333132513871073111811391153107810651029
Percentage of AssetsFairValueDisclosure4921.75022.54295.64335.74586.74560.75366.65447.16065.47550.37242.46060.86432.26489.36409.16544.87091.36541.67377.56916.14256.73652.32563.02681.72782.22807.42339.82269.11895.11639.51338.01439.41305.71225.61152.81133.51007.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1266114610441012104510011041114912391301127113751381138113501316129712801189107511421086102510541388138513701392139514721153119612261247
Percentage of AssetsFairValueDisclosure5021.75122.54395.64435.74686.74660.75466.65547.16165.47650.37342.46160.86532.26589.36509.16644.87191.36641.67477.57016.14356.73752.32663.02781.72882.22907.42439.82369.11995.11739.51438.01539.41405.71325.6

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value34288.3198.8867.5512.3381.2160.7610.926
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value0.137
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.4

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value19154.9824.4943.6241.1550.4390.2070.3071.406
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax55.755.759.950.648.049.436.127.233.20.0

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.2831.2490.6671.0210.9550.3840.270.2040.2250.334
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax6.64.48.011.512.616.422.226.824.30.0

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4.3521.9970.7180.8870.7340.1660.1370.1150.1320.165
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax12.67.08.610.09.77.111.315.114.30.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8.349.2211.9492.4842.210.6230.3440.2220.2340.254
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax24.132.523.428.029.326.628.329.225.30.0

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.160.0860.00.00.00.00.0160.0130.0280.062
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.50.30.00.00.00.01.31.73.00.0

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0390.0030.00.0280.010.010.00.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.10.00.00.40.40.80.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.0410.2181.5331.152.15510204135
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value0.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.0

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.2390.2920.6664.0221016133.345
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.015.625.430.938.950.939.338.30.0

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0090.0550.1560.0180.0110.3080.4751.1060.8430.223
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax22.025.210.21.60.53.02.32.72.40.0

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0050.0680.4080.2170.4531.071.3761.8961.681.065
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax12.231.226.618.921.010.46.84.64.70.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0040.0950.4670.4560.8474.5687.211191710
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax9.843.630.539.739.344.235.448.349.90.0

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.020.00.00.00.2370.3870.3020.277
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.01.30.00.00.01.20.90.90.0

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0230.2430.1670.1780.3640.6931.7121.3940.963
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax56.115.914.58.33.53.44.23.90.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1073972968924974959101711411227
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value10.0
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.9

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value445465453433458482493479503530
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis41.447.846.846.947.150.348.542.041.00.0

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value49504444363629293026
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.75.24.64.93.73.82.92.62.50.0

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value13814610472747647495150
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis12.915.010.87.87.78.04.74.34.20.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value382308328343351333332461486496
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis35.631.733.937.236.134.832.740.439.60.0

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.5292.5332.5330.0090.0090.59830363642
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.20.30.30.00.00.13.03.23.00.0

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value45342952298484119109
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.23.63.25.43.18.47.49.80.0

us-gaap:AvailableForSaleSecurities

us-gaap:AvailableForSaleSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value11081000975932979951998110111921265125513571365136713381288127112591174105811291071101310441378137713641385139014651147119112211243124411691156110511291116
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-31
Value0.00.00.00.00.00.00.00.05.84511101011109.458107.5267.4221720303040405053647976738391909099
Percentage of AvailableForSaleSecurities0.00.00.00.00.00.00.00.00.50.80.80.80.90.90.70.80.60.71.61.93.02.93.03.03.73.94.75.46.66.26.87.37.77.88.8

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-31
Value11081000975932979951998126512501346135413561326127712621249116710501111105098210141337133613141332132513851071111711381153107810651029
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.099.599.299.299.299.199.199.399.299.499.398.498.197.097.197.097.096.396.195.394.693.493.893.292.792.392.291.2

us-gaap:AvailableForSaleSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value0.0
Percentage of AvailableForSaleSecurities0.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value516532503483499516512554
Percentage of AvailableForSaleSecurities46.653.251.651.951.054.251.344.2

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value533466434418427405371535
Percentage of AvailableForSaleSecurities48.146.644.544.943.642.637.342.7

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value10
Percentage of AvailableForSaleSecurities0.9

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2.6892.6192.5130.0090.0090.5982941
Percentage of AvailableForSaleSecurities0.20.30.30.00.00.13.03.3

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value453429522984108
Percentage of AvailableForSaleSecurities4.13.63.25.43.18.48.7

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value0.0
Percentage of AvailableForSaleSecurities0.0

us-gaap:AvailableForSaleSecurities us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value110810009759329799519981265125513571365136713381288127112591174105811291071101310441378137713641385139014651147119112211244
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecurities us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value516532503483499516512554
Percentage of AvailableForSaleSecurities46.653.251.651.951.054.251.344.2

us-gaap:FairValueMeasurementsRecurring, us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value533466434418427405371535
Percentage of AvailableForSaleSecurities48.146.644.544.943.642.637.342.7

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value10
Percentage of AvailableForSaleSecurities0.9

us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2.6892.6192.5130.0090.0090.5982941
Percentage of AvailableForSaleSecurities0.20.30.30.00.00.13.03.3

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value453429522984108
Percentage of AvailableForSaleSecurities4.13.63.25.43.18.48.7

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0.0130.0520.8150.8782.1451020291714103.8570.2490.1861.5191.1351.6240.7180.3880.2740.5070.4522.870.406
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0090.0090.1220.2410.6774.328108.2152.8321.187
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss69.217.315.027.431.642.653.328.116.611.1

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0040.0430.5590.5031.295.4728.51819138.521
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss30.882.768.657.360.153.842.168.277.980.0

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.1340.1340.1780.3640.6930.7960.8680.721
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.016.415.38.33.63.42.75.16.8

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0.0410.2181.5331.152.1551020413530168.2998.61310131.431.6440.8334.6710.4782.2680.8763.3729
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0090.0550.3950.310.6774.331017143.568
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss22.025.225.827.031.441.953.242.040.622.1

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0090.1630.8750.6731.35.6388.587211911
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss22.074.857.158.560.354.642.252.954.669.3

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0230.2430.1670.1780.3640.6931.7121.3940.963
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss56.115.914.58.33.53.44.23.96.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value24522952383197108681055113411741020772810834908801998654106341243388507686177782113421329225400.16927556448195334
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.8256.79210575137352446475492375
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue3.412.935.831.743.049.651.545.143.536.8

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3.62645162132172348333468493503
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue14.987.155.055.853.949.038.444.343.549.3

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1924299.8229.6366483118108
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue81.88.412.53.11.47.47.910.510.7

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0.0280.1660.7180.2720.010.1680.1371118155.4814.4428.36410120.2950.020.1154.2830.2041.7610.4240.529
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.0460.2730.0690.00.0020.0659.061112.381
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.027.738.025.40.01.247.476.162.943.4

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0050.120.3160.170.010.1660.0691.8166.0762.658
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss17.972.344.062.5100.098.850.415.333.048.5

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0230.1090.0330.00.00.00.9160.5260.242
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss82.115.212.10.00.00.07.72.94.4

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value20481981164.342363243272779063358279982990273136662464298190143186116170581213421328225400.027556342190327
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0466.00367360.00.23418297432317
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue0.212.434.231.00.00.657.268.859.450.1

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.58342113604.342361283233227
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue2.887.657.051.8100.099.437.519.332.036.0

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1914190.00.00.0393964
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue96.97.517.20.00.00.09.05.410.2

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3.8223.9597121314673835623406383386189115.4615.8316.236.0093129424252244320570729.8420.2180.2110.1860.1670.1690.00.00.3775.8195.4457.533
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.7790.78937391373524281786058
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue20.420.038.832.343.652.351.328.614.915.1

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3.0433.1614972167311320384260275
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue79.680.051.059.653.346.338.461.764.271.2

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.09.8669.8669.8229.63664447944
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue0.010.18.13.11.47.77.119.511.4

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1108100097593297995199811011192
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


None
Period End2020-06-30
Value10
Percentage of AvailableForSaleSecuritiesDebtSecurities0.9

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value464480458437461479483463490528
Percentage of AvailableForSaleSecuritiesDebtSecurities41.948.047.046.947.150.448.442.141.10.0

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value52514545373628282926
Percentage of AvailableForSaleSecuritiesDebtSecurities4.75.14.64.93.83.92.92.62.50.0

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value14214810473757546474949
Percentage of AvailableForSaleSecuritiesDebtSecurities12.914.810.77.87.77.94.74.34.20.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value390317329345352329325441468486
Percentage of AvailableForSaleSecuritiesDebtSecurities35.331.833.837.136.034.732.640.139.30.0

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.6892.6192.5130.0090.0090.59829363641
Percentage of AvailableForSaleSecuritiesDebtSecurities0.20.30.30.00.00.13.03.33.10.0

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value45342952298483118108
Percentage of AvailableForSaleSecuritiesDebtSecurities4.13.63.25.43.18.47.69.90.0

us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear

us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value5.016.048.031.02.07.020.0114.0174.0178.0134.0120.0153.0150.0171.022.010.015.079.025.064.046.059.0314.0
Percentage of AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.03.021.018.002.012.072.093.055.0
Percentage of AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear40.018.843.858.10.028.660.063.253.441.0

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.013.024.011.02.05.05.016.040.035.0
Percentage of AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear20.081.250.035.5100.071.425.014.023.026.1

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.02.02.00004.04.05.0
Percentage of AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear40.04.26.50.00.00.03.52.33.7

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value8.019.082.071.086.0162.0224.0261.0260.0259.0213.0155.0161.0157.0178.029.019.029.091.050.090.069.0117.0316.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1 us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4.05.037.034.044.092.0113.0120.0119.079.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions150.026.345.147.951.256.850.446.045.837.1

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.014.041.034.041.069.067.086.086.077.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions125.073.750.047.947.742.629.933.033.136.2

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.03.03.01.01.06.08.010.09.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions125.03.74.21.20.62.73.13.84.2

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value3.03.034.040.084.0155.0204.0147.086.081.079.035.08.07.07.07.09.014.012.025.026.023.058.02.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.02.016.016.044.090.0101.048.026.024.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear66.766.747.140.052.458.149.532.730.230.4

us-gaap:CollateralizedMortgageObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.01.017.023.039.064.062.070.046.042.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear33.333.350.057.546.441.330.447.653.553.2

us-gaap:USTreasuryAndGovernment


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value01.01.01.01.06.04.06.04.0
Percentage of AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear0.02.92.51.20.62.92.77.05.1

us-gaap:BankOwnedLifeInsurance

us-gaap:BankOwnedLifeInsurance


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value18318318118018017817717617417317217117016916816416316111711611511411411711611511411311211280797978777776767574
Percentage of BankOwnedLifeInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndDueFromBanks

us-gaap:CashAndDueFromBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1711601702171501431751711491571561751551371471671511391301751271331391691781821572051421331571371141081281211018499107
Percentage of CashAndDueFromBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

us-gaap:SubordinatedDebt


None
Period End2020-06-30
Value100
Percentage of DebtInstrumentFaceAmount100.0

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DebtInstrumentFairValue

us-gaap:FairValueInputsLevel2, us-gaap:CarryingReportedAmountFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value64646484847373
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value65646484847373
Percentage of DebtInstrumentFairValue102.0101.0100.3100.4100.7100.4100.3

us-gaap:DeferredFinanceCostsGross us-gaap:LongtermDebtType

us-gaap:DeferredFinanceCostsGross

us-gaap:SubordinatedDebt


None
Period End2020-06-30
Value2000000.0
Percentage of DeferredFinanceCostsGross100.0

us-gaap:Deposits

us-gaap:Deposits


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8815786475877743759376177368744173447393717072317015718569736949674069056604660063716479629963146042606858906003587860154784480646884567436742654114425841344093
Percentage of Deposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeAssets

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value128118415339232023223.732
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value128118415339232023223.732
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCreditRiskValuationAdjustmentDerivativeAssets us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeCreditRiskValuationAdjustmentDerivativeAssets

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value0.00.00.0040.1420.5211.5952.4283.512.7040.0
Percentage of DerivativeCreditRiskValuationAdjustmentDerivativeAssets0.00.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value236000.0295000.045000.061000.018000.00
Percentage of DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities100.0100.0100.0100.0100.00.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:OtherAssets, us-gaap:InterestRateSwap, us-gaap:Nondesignated


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value0.3870.3870.1120.0810.0690.0450.03620189.20.23.92.80.70.318176.2
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiability us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:OtherLiabilities, us-gaap:InterestRateSwap, us-gaap:Nondesignated


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value0.1690.1730.0820.1160.0930.0350.01720189.20.23.92.80.70.318176.2
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeLiabilities

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value128119415338221720180.324
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value128119415338221720180.324
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeNotionalAmount

us-gaap:CreditRiskContract, us-gaap:Nondesignated


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1101089770
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value252550225
Percentage of DerivativeNotionalAmount22.723.051.2317.9

us-gaap:InterestRateSwap, us-gaap:Nondesignated


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value22432121963653
Percentage of DerivativeNotionalAmount2034.41951.8986.8923.0

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations

us-gaap:FairValueInputsLevel1, us-gaap:CarryingReportedAmountFairValueDisclosure


None
Period End2020-06-302019-12-31
Value1000.0
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations100.00.0

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


None
Period End2020-06-302019-12-31
Value990.0
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations99.70.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value89105104104102100
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations0.00.00.00.00.00.0

us-gaap:FederalHomeLoanBankStockAndFederalReserveBankStock

us-gaap:FederalHomeLoanBankStockAndFederalReserveBankStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value3241443745435352544346455342474245323632
Percentage of FederalHomeLoanBankStockAndFederalReserveBankStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FinancingReceivableAllowanceForCreditLosses


None
Period End2020-06-302020-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value11310063646465666969696970716869707071717170697171707066
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccruedIncomeReceivable, us-gaap:AccountingStandardsUpdate201613


None
Period End2020-06-30
Value1.1
Percentage of FinancingReceivableAllowanceForCreditLosses1.0

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccountingStandardsUpdate201613


None
Period End2020-06-302020-03-312019-12-31
Value11310075
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.00.0

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AccountingStandardsUpdate201613, us-gaap:CommercialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-31
Value504227
Percentage of FinancingReceivableAllowanceForCreditLosses44.442.20.0

us-gaap:AccountingStandardsUpdate201613, us-gaap:ConsumerPortfolioSegment


None
Period End2020-06-302020-03-312019-12-31
Value403732
Percentage of FinancingReceivableAllowanceForCreditLosses35.337.50.0

us-gaap:AccountingStandardsUpdate201613, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-312019-12-31
Value232016
Percentage of FinancingReceivableAllowanceForCreditLosses20.320.20.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value14591564
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value8.6958.588
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.60.5

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value766798
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear52.551.1

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.00.01
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.1240.137
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value3043
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.12.8

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value2226
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.61.7

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value775807
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear53.151.6

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value3043
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.12.8

nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value5361
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear3.63.9

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value2226
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.61.7

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan


None
Period End2020-06-302020-03-31
Value577625
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear39.640.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Doubtful


None
Period End2020-06-302020-03-31
Value0.03.399
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.2

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value4249
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.93.2

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value3.9232.379
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.30.2

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value6.4686.168
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.40.4

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value452551
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear31.035.2

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value6535
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear4.52.3

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value6038
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear4.12.5

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value598636
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value0.3510.303
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.0

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value179182
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear29.928.6

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.4390.615
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.1

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.1780.064
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value7392
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear12.314.5

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value2126
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear3.64.1

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value179182
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear30.028.7

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value7392
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear12.314.6

nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value5253
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear8.78.4

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value2126
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear3.64.1

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan


None
Period End2020-06-302020-03-31
Value271281
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear45.344.2

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value4649
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear7.87.8

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value4.1113.299
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.70.5

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value1.1470.619
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.20.1

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value225275
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear37.743.3

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value411.745
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear6.90.3

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value4.5973.796
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.80.6

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear


None
Period End2020-06-302020-03-31
Value1297438
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value0.0340.021
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value10939
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8.49.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.0690.041
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.1480.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value134112
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear10.325.6

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value10767
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8.315.3

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value10939
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8.49.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value134112
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear10.325.6

nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value19087
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear14.720.0

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value10767
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8.315.3

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value510
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear39.3

us-gaap:RealEstateLoan


None
Period End2020-06-302020-03-31
Value245131
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear18.929.9

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value18887
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear14.519.9

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value0.70.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.10.0

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value1.1860.541
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.10.1

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value510
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear39.3

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value241130
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear18.629.9

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value3.2210.398
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.20.1

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value0.1960.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value14911579
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value0.4850.291
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value229223
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear15.414.2

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.8720.903
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.10.1

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.2310.387
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value381411
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear25.626.1

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value196229
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear13.214.5

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value230224
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear15.514.2

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value382412
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear25.726.1

nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value234252
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear15.816.0

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value196229
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear13.214.5

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan


None
Period End2020-06-302020-03-31
Value446460
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear29.929.2

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value215245
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear14.415.5

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value164.881
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear1.10.3

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value3.5742.002
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.20.1

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value395458
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear26.529.0

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value452.635
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear3.10.2

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value4.5280.121
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.30.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value888945
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value1.3651.405
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.20.1

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value198196
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear22.320.8

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.5760.556
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.10.1

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.2630.284
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value164196
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear18.520.8

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value7079
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear7.98.4

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value199198
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear22.521.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value165196
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear18.620.8

nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value7070
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear8.07.5

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value7079
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear7.98.5

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan


None
Period End2020-06-302020-03-31
Value382399
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear43.042.2

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Doubtful


None
Period End2020-06-302020-03-31
Value0.2190.979
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.1

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value6163
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear6.96.7

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value5.8333.286
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.70.3

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value3.3363.317
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.40.4

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value320392
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear36.141.5

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value573.493
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear6.50.4

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value3.9763.436
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.40.4

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value10861128
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value0.6510.537
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.0

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value235225
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear21.620.0

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value1.1691.207
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.330.384
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value261291
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear24.125.8

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value153170
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear14.115.1

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value235226
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear21.720.1

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value262292
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear24.225.9

nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value125136
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear11.612.1

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value153171
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear14.215.2

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan


None
Period End2020-06-302020-03-31
Value308302
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear28.426.8

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value109121
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear10.010.8

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value7.0013.654
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.60.3

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value9.79110
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.91.0

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value263288
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear24.325.5

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value387.427
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear3.50.7

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value6.1976.441
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.60.6

us-gaap:FinancingReceivableRecordedInvestmentCurrent

us-gaap:FinancingReceivableRecordedInvestmentCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value7579718070766949690268286824682768006586651764026301620561226084596558985812579156935547551554995491539953155288521442074180409437523728364335983536
Percentage of FinancingReceivableRecordedInvestmentCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value25292524242525232425252329323540373833424245415051514941403942434438394042
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRecordedInvestmentPastDue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value22373439363638363434414037333935362936373430383631314137353027222233252531
Percentage of FinancingReceivableRecordedInvestmentPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRevolving

us-gaap:FinancingReceivableRevolving


None
Period End2020-06-302020-03-31
Value790837
Percentage of FinancingReceivableRevolving100.0100.0

us-gaap:FinancingReceivableRevolving us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value266272
Percentage of FinancingReceivableRevolving33.732.6

us-gaap:FinancingReceivableRevolving us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.0120.013
Percentage of FinancingReceivableRevolving0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.0240.025
Percentage of FinancingReceivableRevolving0.00.0

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value1922
Percentage of FinancingReceivableRevolving2.42.7

us-gaap:FinancingReceivableRevolving us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-302020-03-31
Value266272
Percentage of FinancingReceivableRevolving33.732.6

us-gaap:FinancingReceivableRevolving us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-302020-03-31
Value0.0240.025
Percentage of FinancingReceivableRevolving0.00.0

nbtb:CommercialAndIndustrial


None
Period End2020-06-302020-03-31
Value400433
Percentage of FinancingReceivableRevolving50.751.8

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-302020-03-31
Value1922
Percentage of FinancingReceivableRevolving2.42.7

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolving0.0

us-gaap:RealEstateLoan


None
Period End2020-06-302020-03-31
Value104108
Percentage of FinancingReceivableRevolving13.213.0

us-gaap:FinancingReceivableRevolving us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value361408
Percentage of FinancingReceivableRevolving45.748.7

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value3018
Percentage of FinancingReceivableRevolving3.92.2

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value8.7156.856
Percentage of FinancingReceivableRevolving1.10.8

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolving0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-302020-03-31
Value8298
Percentage of FinancingReceivableRevolving10.411.8

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-302020-03-31
Value100.675
Percentage of FinancingReceivableRevolving1.40.1

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-302020-03-31
Value119.267
Percentage of FinancingReceivableRevolving1.41.1

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan


None
Period End2020-06-30
Value17
Percentage of FinancingReceivableRevolvingConvertedToTermLoan100.0

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NonperformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:PerformingFinancingReceivable, us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-30
Value15
Percentage of FinancingReceivableRevolvingConvertedToTermLoan90.1

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NonperformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:NonperformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:PerformingFinancingReceivable, nbtb:AutoFinancingReceivable


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:PerformingFinancingReceivable, nbtb:ConsumerFinancingReceivable


None
Period End2020-06-30
Value0.018
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.1

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ResidentialPortfolioSegment


None
Period End2020-06-30
Value15
Percentage of FinancingReceivableRevolvingConvertedToTermLoan90.1

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

nbtb:AutoFinancingReceivable


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:CommercialAndIndustrial


None
Period End2020-06-30
Value0.977
Percentage of FinancingReceivableRevolvingConvertedToTermLoan5.7

nbtb:ConsumerFinancingReceivable


None
Period End2020-06-30
Value0.018
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.1

nbtb:PaycheckProtectionProgramLoans


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:RealEstateLoan


None
Period End2020-06-30
Value0.703
Percentage of FinancingReceivableRevolvingConvertedToTermLoan4.1

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

nbtb:CommercialAndIndustrial, us-gaap:Doubtful


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:CommercialAndIndustrial, us-gaap:Pass


None
Period End2020-06-30
Value0.976
Percentage of FinancingReceivableRevolvingConvertedToTermLoan5.7

nbtb:CommercialAndIndustrial, us-gaap:SpecialMention


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:CommercialAndIndustrial, us-gaap:Substandard


None
Period End2020-06-30
Value0.001
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

nbtb:PaycheckProtectionProgramLoans, us-gaap:Pass


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:RealEstateLoan, us-gaap:Pass


None
Period End2020-06-30
Value0.703
Percentage of FinancingReceivableRevolvingConvertedToTermLoan4.1

us-gaap:RealEstateLoan, us-gaap:SpecialMention


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:RealEstateLoan, us-gaap:Substandard


None
Period End2020-06-30
Value0.0
Percentage of FinancingReceivableRevolvingConvertedToTermLoan0.0

us-gaap:GuaranteeObligationsMaximumExposure us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsMaximumExposure

nbtb:CommitmentToExtendCreditAndUnusedLinesOfCredit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value190020001900200019001900170017001700160016001600160015001500140014001400130013001300120012001200110011001100110011001100841861873831764749642643
Percentage of GuaranteeObligationsMaximumExposure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialStandbyLetterOfCredit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3834343031304139404041404748363842423132323535373838364041500453733312626262626
Percentage of GuaranteeObligationsMaximumExposure2.01.71.81.51.71.62.42.32.42.52.62.63.03.32.52.83.03.02.42.52.53.02.93.13.53.53.33.73772.74.14.53.83.63.23.53.54.14.1

us-gaap:HeldToMaturitySecurities

us-gaap:HeldToMaturitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value59962163067874478078365954448748449451551552748550046647147045445645445912511711711812262606164707072769097159
Percentage of HeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecurities us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value144151149154163160164879096
Percentage of HeldToMaturitySecurities24.124.423.722.821.920.621.013.316.719.9

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value12121313141415150.3760.418
Percentage of HeldToMaturitySecurities2.02.02.22.02.01.91.92.30.10.1

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10510511011210310383299.788
Percentage of HeldToMaturitySecurities17.717.017.516.713.913.310.64.51.8

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value145171189213232247257268229186
Percentage of HeldToMaturitySecurities24.227.630.131.531.331.732.940.642.138.5

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value191180167173210234243249213200
Percentage of HeldToMaturitySecurities31.929.026.525.628.330.031.037.839.341.5

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value23211113115.7673.3620.1610.4010.3391.8053.4243.5072.0071.58110118.8173.7945.6972.3535.7962.7210.57
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5.8867.023.1843.1392.3341.2810.7120.00.00.085
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain24.733.326.923.620.322.221.20.00.04.7

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.9380.8150.5840.7850.9210.460.4030.0360.0430.057
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain3.93.94.95.98.08.012.022.410.73.2

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.4474.1333.2564.0013.3031.3290.7670.0040.001
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain22.819.627.630.028.723.022.82.50.2

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5.4455.992.1652.8492.7121.3881.0970.0310.0920.224
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain22.828.418.321.423.624.132.619.322.912.4

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6.1523.1272.6282.5442.1771.2540.3310.090.2651.439
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain25.814.822.219.118.921.79.855.966.179.7

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0.010.1190.6290.571.0993.5718.2861411104.0072.3222.4794.1464.4790.4430.2680.6211.6851.0192.411.3452.0884.577
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.1550.1270.4840.9812.7734.0753.2440.81
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss0.00.024.622.344.027.533.528.328.020.2

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.00.00.00.00.00.0690.00.0
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss0.00.00.00.00.00.00.00.50.00.0

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.00.10.0640.00.00.00.0670.0
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss0.00.015.911.20.00.00.00.50.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.3680.3650.5392.233.8977.085.9892.577
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss0.00.058.564.049.062.447.049.251.764.3

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.010.1190.0060.0140.0760.361.6163.0412.3520.62
Percentage of HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss100.0100.01.02.56.910.119.521.220.315.5

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value00442000.0427000.01024000.03571000.08195000.09183000.04896000.04549000.02671000.01289000.01056000.01277000.01189000.0386000.0256000.0604000.01279000.0951000.01520000.01294000.0-1923000.00
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value000076000.0360000.01532000.01765000.01042000.0488000.0
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.00.00.07.410.118.719.221.318.3

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0.010.1190.6290.571.0993.5718.2861411104.0072.3222.4794.1464.4790.4430.2680.6211.6851.0192.411.345-2.088-4.577
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.010.1190.0060.0140.0760.361.6163.0412.3520.62
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss100.0100.01.02.56.910.119.521.220.315.5

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-06-30
Value0.993.338687483226309471359363243161153279321434043158591736611736059586364
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.993.3382.2575.4478.5919771118938
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue100.0100.03.37.310.38.524.923.724.815.7

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value10000.0119000.0187000.0143000.075000.0091000.05195000.06689000.05507000.01336000.01033000.01423000.02869000.03290000.057000.012000.017000.0406000.068000.0890000.051000.0-165000.0-4577000.0
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value10000.0119000.06000.014000.00084000.01276000.01310000.0132000.0
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.03.29.80.00.092.324.619.69.9

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-06-30
Value0.993.33820244.5610.0233032802811561171172452865.5010.9182.191171612920696959586364
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.993.3382.2575.4470.00.018847322
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue100.0100.011.122.60.00.081.227.726.214.3

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-06-30
Value0.00.04750782262861677982874435333537394041434445482900.00.00.00.0
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.00.08.591958271515
Percentage of HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue0.00.00.00.010.98.520.416.319.618.1

us-gaap:HeldToMaturitySecuritiesFairValue

us-gaap:HeldToMaturitySecuritiesFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value62364264169175478277864553247748149551651352549551247547347545446145445412311411311512163616265717274789198161
Percentage of HeldToMaturitySecuritiesFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel2, us-gaap:CarryingReportedAmountFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value59962163067874478078365954448748449451551552748550046647147045445645445912511711711812260
Percentage of HeldToMaturitySecuritiesFairValue96.296.798.398.298.699.7100.6102.2102.1102.0100.599.899.8100.4100.698.097.898.399.699.0100.099.099.9101.1102.1102.6103.5102.3101.098.4

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value62364264169175478277864553247748149551651352549551247547347545446145445412311411311512161
Percentage of HeldToMaturitySecuritiesFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesFairValue us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value150158152157164160162838795
Percentage of HeldToMaturitySecuritiesFairValue24.124.723.822.821.820.620.913.016.419.8

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value13131414151515150.4190.475
Percentage of HeldToMaturitySecuritiesFairValue2.12.02.22.12.01.92.02.40.10.1

us-gaap:USGovernmentDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value11110911311610610583299.789
Percentage of HeldToMaturitySecuritiesFairValue17.917.117.716.914.113.410.84.51.8

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value150177191215234246254260223183
Percentage of HeldToMaturitySecuritiesFairValue24.227.629.831.231.131.532.740.441.938.2

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value197183169176212235241246211201
Percentage of HeldToMaturitySecuritiesFairValue31.728.626.525.528.230.031.138.239.841.9

us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions

us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1.04.014.018.025.060.0150.0224.0171.0177.091.057.055.096.0176.013.020.0
Percentage of HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions us-gaap:FinancialInstrument

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-3120