BANF


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted
us-gaap:ProductOrService
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InsuranceCommissionsAndFees

us-gaap:MarketingAndAdvertisingExpense

us-gaap:InterestExpense

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestPaidNet

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:Assets
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

banf:CashManagement

banf:FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs
us-gaap:BusinessAcquisition
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:FinancingReceivableAllowanceForCreditLossesNetChargeOffs
us-gaap:BusinessAcquisition
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:PaymentToAcquireTaxCreditInvestments

banf:PaymentsToAcquireEquitySecurities
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancialInstrument
banf:PercentageOfAvailableForSaleSecuritiesHeld

banf:ProceedsFromPaydownsAndSalesOfEquitySecurities

banf:TransferToRepossessedAssets

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax
us-gaap:StatementEquityComponents
us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DebtAndEquitySecuritiesGainLoss
us-gaap:PlanName
us-gaap:DeferredCompensationArrangementWithIndividualSharesIssued

us-gaap:Depreciation
us-gaap:StatementEquityComponents
us-gaap:DividendsCommonStock

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:FairValueOfAssetsAcquired

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:BusinessAcquisition
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:BusinessAcquisition
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableChangeInMethodCreditLossExpenseReversal
us-gaap:BusinessAcquisition
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:GainLossOnDispositionOfOtherFinancialAssets

us-gaap:GainLossOnSaleOfOtherAssets

us-gaap:GainLossOnSalesOfLoansNet

us-gaap:GoodwillAcquiredDuringPeriod
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:LaborAndRelatedExpense

us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans

us-gaap:NoninterestExpense

us-gaap:NoninterestIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncomeOther

us-gaap:OccupancyNet

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherNoninterestExpense

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsToPurchaseLoansHeldForSale

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromSaleOfLoansHeldForSale

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProfitLossFromRealEstateOperations

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:BusinessAcquisition
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
us-gaap:PlanName
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:TransferToOtherRealEstate

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:ConsolidatedEntities
banf:CapitalConservationBufferToRiskWeightedAssets
us-gaap:ConsolidatedEntities
banf:CapitalWithCapitalConservationBuffer
us-gaap:ConsolidatedEntities
banf:CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferAmount
us-gaap:ConsolidatedEntities
banf:CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets

banf:DeferredCompensationArrangementWithIndividualAccumulatedStockUnitsForDeferredBoardFees

banf:DeferredCompensationArrangementWithIndividualStockAveragePrice
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
banf:FinancingReceivableModificationsDueToImpactOfCaresAct
us-gaap:UnusualOrInfrequentItem

banf:LettersOfCreditFairValueDisclosure

banf:PaycheckProtectionProgramLoan

banf:PaycheckProtectionProgramUnamortizedProcessingFees

banf:PercentageOfLoansSecuredByRealEstate
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ConsolidatedEntities
banf:TierOneRiskBasedCapitalWithCapitalConservationBufferAmount
us-gaap:ConsolidatedEntities
banf:TierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:AllowanceForDoubtfulAccountsReceivable

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

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:ConsolidatedEntities
us-gaap:Capital
us-gaap:ConsolidatedEntities
us-gaap:CapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities
us-gaap:CapitalRequiredToBeWellCapitalized
us-gaap:ConsolidatedEntities
us-gaap:CapitalToRiskWeightedAssets
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndDueFromBanks

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CommitmentsFairValueDisclosure
us-gaap:ConsolidatedEntities
us-gaap:CommonEquityTierOneCapital
us-gaap:ConsolidatedEntities
us-gaap:CommonEquityTierOneCapitalRatio
us-gaap:ConsolidatedEntities
us-gaap:CommonEquityTierOneCapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities
us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DepositsFairValueDisclosure

us-gaap:DividendsPayableCurrentAndNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:BusinessAcquisition
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsRecordedInvestment

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentCurrent
us-gaap:BusinessAcquisition
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus
us-gaap:BusinessAcquisition
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRevolving
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:HeldToMaturitySecurities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount

us-gaap:HeldToMaturitySecuritiesFairValue
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument

us-gaap:InterestBearingDepositLiabilities

us-gaap:InterestBearingDepositsInBanks

us-gaap:InterestReceivable
us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:InterestReceivableAndOtherAssets

us-gaap:InvestmentsFairValueDisclosure

us-gaap:JuniorSubordinatedNotes
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LoansAndLeasesReceivableAllowance

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome

us-gaap:LoansAndLeasesReceivableNetReportedAmount
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LoansHeldForSaleFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansReceivableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansReceivableHeldForSaleAmount

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:OperatingLeaseLiability

us-gaap:OtherLiabilities

us-gaap:OtherRealEstateAndForeclosedAssets

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged

us-gaap:RealEstateAcquiredThroughForeclosure
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:PlanName

us-gaap:ShortTermBorrowings
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ShorttermDebtFairValue

us-gaap:StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
us-gaap:ConsolidatedEntities
us-gaap:TierOneLeverageCapital
us-gaap:ConsolidatedEntities
us-gaap:TierOneLeverageCapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities
us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalized
us-gaap:ConsolidatedEntities
us-gaap:TierOneLeverageCapitalToAverageAssets
us-gaap:ConsolidatedEntities
us-gaap:TierOneRiskBasedCapital
us-gaap:ConsolidatedEntities
us-gaap:TierOneRiskBasedCapitalRequiredForCapitalAdequacy
us-gaap:ConsolidatedEntities
us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalized
us-gaap:ConsolidatedEntities
us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CommonStockValue ████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁32.66332.64732.69432.64432.6432.61832.60432.7532.73132.70831.89531.86315.90915.89115.81115.69515.5615.52815.59715.59115.56215.51215.50415.44915.39915.36415.33415.29815.25615.22815.24215.215.15415.14515.11815.12615.27315.3915.36915.35915.347
us-gaap:CommonStockSharesIssued ████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁32.66269132.64669132.69426832.64401832.63958832.61778832.60392632.7496932.73121532.70716631.89456331.86306315.90921915.89127615.81093515.69508315.56027115.52780415.59744615.5915315.56229815.51254515.50451315.44954615.39860315.36372815.33362215.29803515.25586415.22827715.24230815.20046815.15399115.1452815.1174315.12554115.27318115.39035715.36871715.35867215.3468
us-gaap:CommonStockSharesAuthorized █████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁40.040.040.040.040.040.040.040.040.040.040.040.040.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.0
us-gaap:CommonStockSharesOutstanding ████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁32.66269132.64669132.69426832.64401832.63958832.61778832.60392632.7496932.73121532.70716631.89456331.86306315.90921915.89127615.81093515.69508315.56027115.52780415.59744615.5915315.56229815.51254515.50451315.44954615.39860315.36372815.33362215.29803515.25586415.22827715.1174315.20046815.15399115.1452815.1174315.12554115.27318115.39035715.36871715.35867215.3468
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█33.07549333.287359NA33.32721333.31719333.292852NA33.50414333.45855733.317744NA32.59227716.26168816.237998NA15.92220915.84248515.816371NA15.90612415.86492415.838548NA15.79584315.8321815.66092NA15.59488115.47974915.482517NA15.44739415.42679615.415511NA15.47165915.651953NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█32.65126232.679587NA32.64190232.62914632.612399NA32.7424832.7163532.574251NA31.83839215.90380515.864807NA15.63109415.54981115.534416NA15.58159315.53632515.507346NA15.4259215.46851115.342486NA15.28753515.23212915.238701NA15.17475515.15552515.134606NA15.2100915.364738NANANANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount █▁0.4480160.351862NA0.1646960.15850.18NA0.0837990.0858020.113278NA0.0755430.019505NANA0.1415650.2419450.236451NA0.1452610.1680650.128667NA0.0764130.0592860.065NA0.0038040.4661590.534NA0.4790.60720.6072NA0.6493470.537008NANANANA
us-gaap:EarningsPerShareBasic ▁▂▅▄▅▄▄▄▄▃▁▂█▇▆▅▅▅▄▄▆▅▄▆▄▄▃▄▃▃▃▃▂▄▂▃▁▂▁▂▂6.4e-076.9e-071.0900000000000002e-061.02e-061.04e-069.8e-071e-061.01e-069.300000000000001e-079.100000000000001e-076.1e-076.800000000000001e-071.46e-061.3899999999999998e-061.19e-061.15e-061.12e-061.0700000000000001e-061e-061.01e-061.19e-061.0500000000000001e-061.02e-061.22e-069.399999999999999e-079.6e-079.100000000000001e-079.399999999999999e-078.3e-078.8e-078.100000000000001e-079.100000000000001e-077.7e-079.300000000000001e-077.7e-078.2e-076.6e-077.4e-076.699999999999999e-077.7e-077.2e-07
us-gaap:EarningsPerShareDiluted ▁▂▅▄▅▄▄▄▄▄▁▂█▇▆▆▅▅▄▄▆▅▄▆▄▄▃▄▃▃▃▄▂▄▂▃▂▂▂▂▂6.3e-076.800000000000001e-071.0700000000000001e-061e-061.02e-069.6e-079.8e-079.8e-079.100000000000001e-078.900000000000001e-075.9e-076.7e-071.42e-061.3600000000000001e-061.16e-061.13e-061.1e-061.0500000000000001e-069.9e-079.8e-071.17e-061.03e-069.9e-071.19e-069.200000000000001e-079.399999999999999e-078.8e-079.300000000000001e-078.100000000000001e-078.6e-077.900000000000001e-079.000000000000001e-077.6e-079.100000000000001e-077.5e-078.100000000000001e-076.5e-077.2e-076.500000000000003e-077.5e-077.1e-07
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:DepositAccount▁▆██▆▃▅▄▃▁16.7618.80419.93819.86619.11417.66318.55418.10317.53716.653NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:FiduciaryAndTrust▅██▆▃▃▁▄▅▂3.3683.6553.6823.493.253.1773.0233.2813.3963.129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestAndFeeIncomeLoansAndLeases ███▇▇▆▆▆▆▅▄▄▄▄▃▃▃▃▃▃▂▂▃▂▂▂▂▂▁▁▂▂▂▂▂▂▁▁▁▁▁78.85576.51876.53975.2670.9968.7367.78266.78865.60462.91957.53456.0954.76353.63551.57951.64751.04650.19550.51147.34246.4945.94947.70946.75945.85542.64942.6941.69441.49341.17443.342.02641.85741.9642.52142.07440.25639.25739.84638.938.714
us-gaap:InsuranceCommissionsAndFees ▆█▇█▆▇▆▇▅▇▅▆▄▆▄▆▃▅▃▆▃▅▃▅▃▅▃▅▃▅▃▄▃▃▂▃▂▂▁▂▁4.4435.6765.0765.5354.425.2654.5935.2073.9275.1993.9174.6033.7284.5633.7974.3723.2554.1353.1764.4273.124.0683.2624.1523.2623.9663.1123.8923.0454.0453.1693.6612.8032.9932.6542.912.4712.4222.0032.522.166
us-gaap:MarketingAndAdvertisingExpense ▂██▆▅▇▆▆▃█▅▄▃▇▆▄▃▅▇▃▂▄▇▂▃▄▆▄▂▂▆▆▄▃▄▃▃▃▄▂▁1.4852.3552.3272.0471.9192.2612.031.9971.6492.3521.8251.791.5592.2151.9781.7791.6241.8552.2661.641.4011.6792.2181.4291.6611.7162.0211.6681.4561.5071.9951.9981.6791.6551.8111.551.6531.5381.81.4021.277
us-gaap:InterestExpense ▂▅▇███▇▆▅▄▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▃▃▃▃▃▃4.2439.89812.2514.14214.30614.03812.86711.7610.2627.8396.0555.7854.8344.2553.8463.6753.6173.6033.1743.0153.0343.033.113.1553.2373.33.3353.3943.4433.5953.9654.3124.5474.9485.1646.0426.7697.026.9626.86.966
us-gaap:InterestIncomeExpenseNet █▇▇▇▇▆▆▆▆▆▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁77.20874.07373.93972.28768.79266.90366.88865.67364.8863.03558.69957.23356.43954.76851.55351.43150.86849.97650.07546.87646.21545.62647.31946.51445.48942.02941.92140.71240.6340.25642.29740.83240.86940.81741.38440.21838.02737.28937.15836.07135.67
us-gaap:InterestPaidNet ▂▆▇███▇▆▅▄▃▃▂▂▁▁▁▁▁▁▁▁▁▁▂▁▁▁▁▁▂▂▂▂▂▃▃▄▃▃4.64310.4112.50214.21814.22713.65512.45311.57110.0397.4865.8755.7254.7284.2353.7543.7123.6163.5913.1133.0643.0283.053.0773.2053.8622.9913.3863.4553.5483.7533.9464.424.7615.1855.3286.2756.8127.1056.6296.917NA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▃▃▇██▇▇▇▇▆▆▅▅▅▄▃▃▃▂▂▃▂▂▃▁25.30628.2541.75542.96543.82841.01441.05741.91839.83636.94136.95832.52633.62833.19329.12327.21426.40125.19923.89124.42428.2324.66522.89527.62520.114NANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▃▃▃▃▃▃▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃█▁▃▃▃▃▃▃█▁▃▃▃▃▃▃▃▃▃4.5765.6426.2489.5979.6619.1778.3329.0359.257.32117.46110.81610.44611.14310.5039.2328.9088.628.1638.7949.6778.40647.422-8.8325.4265.885.9876.5646.7997.17548.226-6.396.6938.0397.0125.6385.9476.4795.7646.5896.262
us-gaap:NetIncomeLoss ▄▄█▇█▇▇▇▇▆▄▄▅▄▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▂▁▂▁▁▁▁▁20.7322.60835.50733.36834.16731.83732.72532.88330.58629.6219.49721.7123.18222.0518.6217.98217.49316.57915.72815.6318.55316.25915.74918.79314.68814.65713.86114.49112.59313.37212.30613.8611.72914.00511.59812.55310.11511.35510.17711.78711.042
us-gaap:ComprehensiveIncomeNetOfTax ▄▆█▇█▇▇▇▆▆▃▄▅▄▃▃▃▃▃▃▃▃▃▄▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂20.54129.03335.33233.34237.42134.37735.25831.84930.04528.23217.00621.42823.71221.87216.72917.36418.03917.10914.65815.77516.07316.99815.37618.46115.64614.6913.914.13410.93212.94111.91813.60611.17712.07210.87812.97211.54711.1637.91511.48411.749
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▃▄█▇█▇▇▇▆▆▃▃▄▃▂▂▂▂▁▁▂▂▁▂▁▁20.7322.60835.50733.36834.16731.83732.72532.88330.58629.6219.49721.7123.18222.0518.6217.98217.49316.57915.72815.6318.55316.25915.74918.79314.68814.657NANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▄▄█▇█▇▇▇▇▆▄▄▅▄▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▂▁▂▁20.7322.60835.50733.36834.16731.83732.72532.88330.58629.6219.49721.7123.18222.0518.6217.98217.49316.57915.72815.6318.55316.25915.74918.79314.68814.65713.86114.49112.59313.37211.94613.8611.72914.00511.59812.55310.115NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets █▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▁▂▂▂▁▁▁▁9612.4538669.0968565.7588388.8167642.0217709.07574.2587602.4387622.9637615.6427253.1567132.1687046.5897189.6377018.9526783.5376683.3766740.9386692.8296406.0966498.8986570.126574.9726406.5756368.6336375.0416038.9745926.735749.6665773.9266022.255836.7515671.7115737.9945608.8255472.306NA5239.6585060.2494599.1824628.022
us-gaap:Liabilities █▇▆▆▅▅▅▅▅▅▅▅▄▅▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁8578.2547645.7167560.7697409.0646685.6416781.0736671.4696717.6376760.9516777.5466477.5276367.7546298.1276459.7646307.8586089.8066006.5466078.2776037.3195760.0355864.6545948.4415965.6585810.3925788.1285806.9295481.9775380.7575214.7055246.2195502.6835326.3645172.155246.0375125.7844997.914797.0484772.8314601.6554145.3134182.43
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▆▅▅▅▅▅▅▅▅▄▅▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▂▃▂▂▂▂▂▁▁9612.4538669.0968565.7588388.8167642.0217709.07574.2587602.4387622.9637615.6427253.1567132.1687046.5897189.6377018.9526783.5376683.3766740.9386692.8296406.0966498.8986570.126574.9726406.5756368.6336375.0416038.9745926.735749.6665773.9266022.255836.7515671.7115737.9945608.8255472.3065267.4455239.6585060.2494599.1824628.022
us-gaap:StockholdersEquity ███▇▇▇▆▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁1034.1991023.381004.989979.752956.38927.927902.789884.801862.012838.096775.629764.414748.462729.873711.094693.731676.83662.661655.51646.061634.244621.679609.314596.183580.505568.112556.997545.973534.961527.707519.567510.387499.561491.957483.041474.396470.397466.827458.594453.869445.592
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByFairValueHierarchyLevel us-gaap:FairValueInputsLevel2▆▁█1788.3431548.861868.281NANANA1424.255NANANANANA1716.92038.2121851.1611706.6561597.822NA1598.177NANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AmortizationOfIntangibleAssets ███▆▆▆▆▅▆▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▃▃▃▃▃▃▃▂▂▂▁▁0.9680.9641.0070.8420.7580.7590.7770.740.7590.7330.5470.5470.5470.5470.5480.560.580.5810.6020.4440.4450.4440.4440.4440.4580.4080.3740.4240.4240.4430.4560.4570.4570.4570.4570.4580.3770.3770.330.2670.268
us-gaap:PropertyPlantAndEquipmentNet █▇▇▇▅▅▅▅▄▃▃▃▃▃▃▃▃▃▃▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁232.517215.927206.275203.772180.506177.95174.362170.167146.71141.163134.088130.188127.819127.124126.771126.415126.343127.093126.813120.659120.88122.786121.341121.686121.559121.354117.862118.176117.621116.729115.503113.812113.836114.115111.355110.001102.80198.58497.79692.00591.809
us-gaap:Goodwill ████▄▄▄▄▄▄▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁149.922149.923148.604147.01379.74979.74979.74979.73379.73379.79654.04254.04254.04254.04254.04254.04254.04254.04254.04244.59444.59444.96244.96244.96244.96245.11844.54544.54544.54544.54544.54544.54544.54544.54544.54544.59344.59344.59344.54835.8935.886
us-gaap:FiniteLivedIntangibleAssetsNet ▁▅█20.88221.8522.608NANANA16.47NANANANANANANANANANANANANANANANANANANANANA11.111.59512.08312.6313.158NA14.219NANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity ███▇▇▇▆▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁1034.1991023.381004.989979.752956.38927.927902.789884.801862.012838.096775.629764.414748.462729.873711.094693.731676.83662.661655.51646.061634.244621.679609.314596.183580.505568.112556.997545.973534.961527.707519.567510.387499.561491.957483.041474.396470.397466.827458.594453.869445.592
us-gaap:CommonStockValue ████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁32.66332.64732.69432.64432.6432.61832.60432.7532.73132.70831.89531.86315.90915.89115.81115.69515.5615.52815.59715.59115.56215.51215.50415.44915.39915.36415.33415.29815.25615.22815.24215.215.15415.14515.11815.12615.27315.3915.36915.35915.347
us-gaap:AdditionalPaidInCapitalCommonStock █████▇▇▇▇▇▂▂▄▄▄▃▂▂▂▁▁▁▁154.692153.999153.353151.47150.995150.195149.709149.242148.494147.762107.481106.605121.349120.435117.541111.012105.676103.978102.865100.83599.20297.47796.841NANA89.95188.803NANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▇▆▆▆▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁837.154826.855815.488792.009769.09744.713722.615707.481684.425661.341638.58625.782610.758593.631577.648565.039552.991541.098535.521527.038517.028503.758492.776482.302468.761458.857448.953439.84431.12423.637415.607407.732398.267390.881381.017374.14371.15369.189361.68355.34347.979
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▇▅▅▅▃▂▁▁▁▂▃▃▃▃▄▄▄▄▄▄▅▅▅▅▅▅▅▅▆▆▆▆▆▇█▇▇▇██9.699.8793.4543.6293.6550.401-2.139-4.672-3.638-3.715-2.3270.1640.446-0.0840.0941.9852.6032.0571.5272.5972.4524.9324.1934.5664.8983.943.9073.8684.2255.8866.3176.7056.9597.5119.44410.1649.7458.3138.50510.76711.07
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▅█▆▅▅▃▇▃▂▂▁47.38435.26346.49340.35835.44736.6631.71943.69629.37626.35527.723.053NANANANANANANANANANANANANANA7.5927.78619.10123.61312.40818.38114.62214.8859.80417.7618.8625.985159.8114.786NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▃▆▅█▅▄▆▆▆▅▅-720.928-386.215-23.06-146.012297.581-78.162-338.67636.213-8.50626.034-92.422-85.285NANANANANANANANANANANANANANA-81.425-77.46915.63612.18-156.552-19.916-18.1988.776-49.25236.18574.7178.76-122.05324.909NA
us-gaap:NetCashProvidedByUsedInFinancingActivities █▂▃▂▁▂▁▁▂▁▂▂913.02731.531142.982103.082-105.99594.652-60.954-55.803-24.913-38.161105.65462.275NANANANANANANANANANANANANANA104.434156.38-30.55-264.889176.678150.241-69.47105.56136.889-14.75320.784157.921141.099-37.78NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▂▇▅█▆▁239.483-319.421166.415-2.572227.03353.15-367.911NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▅█▆▅▅▃▇▃▂▂▁47.38435.26346.49340.35835.44736.6631.71943.69629.37626.35527.723.053NANANANANANANANANANANANANANA7.5927.78619.10123.61312.40818.38114.62214.8859.80417.7618.8625.985159.8114.786NA
us-gaap:NetIncomeLoss ▄▄█▇█▇▇▇▇▆▄▄▅▄▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▂▁▂▁▁▁▁▁20.7322.60835.50733.36834.16731.83732.72532.88330.58629.6219.49721.7123.18222.0518.6217.98217.49316.57915.72815.6318.55316.25915.74918.79314.68814.65713.86114.49112.59313.37212.30613.8611.72914.00511.59812.55310.11511.35510.17711.78711.042
us-gaap:DepreciationDepletionAndAmortization ███▇▆▆▆▅▄▄▃▄▃▃▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁4.5124.4554.3624.113.7733.7443.7423.4733.1883.1432.8453.042.9392.9673.0093.1163.1473.1113.1672.9322.8942.9082.8832.8762.8332.7572.8132.7312.7822.7512.8592.712.6832.5882.5612.5742.2662.2812.2282.146NA
us-gaap:DeferredIncomeTaxExpenseBenefit ▁▂▅▃▃▃▆▄▃▃█▂▃▃▄▂▂▃▃▄▃▃▃▃▂▂▁▅▃▃▂▄▃▃▂▁▂▃▃▃-2.776-1.2111.90.141-0.434-0.4593.0720.687-0.487-0.1176.073-0.967-0.238-0.4851.021-1.152-1.088-0.829-0.8740.435-0.878-0.586-0.576-0.164-1.009-1.934-2.2722.124-0.239-0.096-1.1150.558-0.112-0.02-1.806-2.167-0.959-0.35-0.2640.12NA
us-gaap:ShareBasedCompensation ▂▂▂▂▂▁▂▂▂▁▂▂▁▁▂▂▂▂▂▂▁▂▂▂▂▂▁▂▂▂▂▂▂▂█▂▁▂▁▂0.4060.4260.3890.3470.3670.1740.3710.3530.3220.3060.3610.3540.2820.2220.370.3650.450.4510.4740.4890.290.4640.4520.4480.4290.3470.2660.3990.3210.3740.3410.3910.3570.4412.0580.3710.2710.3750.2340.381NA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▃▆▅█▅▄▆▆▆▅▅-720.928-386.215-23.06-146.012297.581-78.162-338.67636.213-8.50626.034-92.422-85.285NANANANANANANANANANANANANANA-81.425-77.46915.63612.18-156.552-19.916-18.1988.776-49.25236.18574.7178.76-122.05324.909NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▄▃▃▂▃▃█▃▃▃▂▂▂▂▂▁▂▁▂▁▂▂▂▂▂▂▂▂▂▂▁▁▂▂▂18.94311.3497.1896.9586.1156.7927.46527.7679.4637.1686.5124.9273.1993.3692.992.7972.1092.9391.7284.7380.694.1072.9492.7582.6293.1543.1433.7013.3693.6834.1482.2752.015.0053.9414.304NANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities █▂▃▂▁▂▁▁▂▁▂▂913.02731.531142.982103.082-105.99594.652-60.954-55.803-24.913-38.161105.65462.275NANANANANANANANANANANANANANA104.434156.38-30.55-264.889176.678150.241-69.47105.56136.889-14.75320.784157.921141.099-37.78NA
us-gaap:PaymentsOfDividendsCommonStock ███▇▇▇▇▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁10.44710.46210.4469.7929.7869.7819.8256.8746.8686.6986.6926.0456.0386.0085.9645.6025.5895.6155.6135.2925.2735.2715.2544.7734.7634.7534.7434.424NANA8.8284.091NANA4.0863.82NANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3232323232323232323231311515151515151515151515151515151515151515151515151515151515
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.40.40.40.40.40.40.40.40.40.40.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.30.30.30.30.30.30.30.3

None

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3232323232323232323231311515151515151515151515151515151515151515151515151515151515
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4040404040404040404040404020202020202020202020202020202020202020202020202020202020
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3232323232323232323231311515151515151515151515151515151515151515151515151515151515
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value33333333333333333216161515151515151515151515151515151515
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value32323232323232323115151515151515151515151515151515151515
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-06-232013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value448020.0351860.0164700.0158500.0180000.083799.085802.0113280.075543.019505.0141560.0241940.0236450.0145260.0168060.0128670.076413.059286.065000.03804.0466160.0466160.0534000.0479000.0607200.0607200.0649350.0537010.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.640.691.091.021.040.981.01.010.930.910.610.681.461.391.191.151.121.071.01.011.191.051.021.220.940.960.910.940.830.880.810.910.770.930.770.820.660.740.670.770.72
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.630.681.071.01.020.960.980.980.910.890.590.671.421.361.161.131.11.050.990.981.171.030.991.190.920.940.880.930.810.860.790.90.760.910.750.810.650.720.650.750.71
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:DepositAccount


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value16181919191718181716
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating20.622.40.023.023.021.80.023.423.323.5
Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount0.00.00.00.00.00.00.00.00.00.0

us-gaap:FiduciaryAndTrust


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.3683.6553.6823.493.253.1773.0233.2813.3963.129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.119.418.517.617.018.016.318.119.418.8
Percentage of InterestAndDividendIncomeOperating4.14.40.04.03.93.90.04.24.54.4
Percentage of InterestAndDividendIncomeOperating us-gaap:FiduciaryAndTrust0.00.00.00.00.00.00.00.00.00.0

None

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestAndFeeIncomeLoansAndLeases


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7876767570686766656257565453515151505047464547464542424141414342414142424039393838
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating96.891.10.087.185.484.90.086.387.388.80.089.089.490.90.093.793.793.70.094.994.494.40.094.194.194.10.094.594.193.90.093.192.291.70.091.089.988.60.090.790.8

None

us-gaap:InsuranceCommissionsAndFees

us-gaap:InsuranceCommissionsAndFees


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4.4435.6765.0765.5354.425.2654.5935.2073.9275.1993.9174.6033.7284.5633.7974.3723.2554.1353.1764.4273.124.0683.2624.1523.2623.9663.1123.8923.0454.0453.1693.6612.8032.9932.6542.912.4712.4222.0032.522.166
Percentage of InsuranceCommissionsAndFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating5.56.80.06.45.36.50.06.75.27.30.07.36.17.70.07.96.07.70.08.96.38.40.08.46.78.70.08.86.99.20.08.16.26.50.06.35.55.50.05.95.1

None

us-gaap:MarketingAndAdvertisingExpense

us-gaap:MarketingAndAdvertisingExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1485000.02355000.02327000.02047000.01919000.02261000.02030000.01997000.01649000.02352000.01825000.01790000.01559000.02215000.01978000.01779000.01624000.01855000.02266000.01640000.01401000.01679000.02218000.01429000.01661000.01716000.02021000.01668000.01456000.01507000.01995000.01998000.01679000.01655000.01811000.01550000.01653000.01538000.01800000.01402000.01277000.0
Percentage of MarketingAndAdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.82.80.02.42.32.80.02.62.23.30.02.82.53.80.03.23.03.50.03.32.83.50.02.93.43.80.03.83.33.40.04.43.73.60.03.43.73.50.03.33.0

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4.2439.898121414141211107.8396.0555.7854.8344.2553.8463.6753.6173.6033.1743.0153.0343.033.113.1553.2373.33.3353.3943.4433.5953.9654.3124.5474.9485.1646.0426.7697.026.9626.86.966
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating5.211.80.016.417.217.30.015.213.711.10.09.27.97.20.06.76.66.70.06.06.26.20.06.46.67.30.07.77.88.20.09.610.010.80.013.115.115.80.015.916.3

None

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7774737268666665646358575654515150495046464547464542414040404240404041403837373635
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating94.888.20.083.682.882.70.084.886.388.90.090.892.192.80.093.393.493.30.094.093.893.80.093.693.492.70.092.392.291.80.090.490.089.20.086.984.984.20.084.183.7

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, banf:CommunityBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value434444444443434242302827262525252626
Percentage of InterestIncomeExpenseNet56.960.160.161.865.164.965.665.164.864.763.764.863.362.962.662.563.064.4
Percentage of InterestAndDividendIncomeOperating53.953.00.051.753.953.60.055.256.060.659.460.10.058.157.757.30.058.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:CommunityBanks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, banf:ExecutiveOperationsAndSupport


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.10.20.5031.0171.1680.9720.4060.3460.37-0.423-0.406-0.375-0.405-0.435-0.467-0.464-0.474-0.514
Percentage of InterestIncomeExpenseNet0.10.30.71.41.71.50.60.50.6-0.9-0.9-0.9-1.0-1.1-1.1-1.2-1.1-1.3
Percentage of InterestAndDividendIncomeOperating0.10.20.01.21.41.20.00.40.5-0.9-0.8-0.80.0-1.0-1.1-1.10.0-1.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:ExecutiveOperationsAndSupport0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, banf:MetropolitanBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value222221212121212121151513141413141413
Percentage of InterestIncomeExpenseNet28.929.929.430.431.231.931.932.532.532.833.832.834.234.534.334.833.832.5
Percentage of InterestAndDividendIncomeOperating27.426.40.025.425.826.40.027.528.130.731.530.40.031.831.632.00.029.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:MetropolitanBanks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value4.9765.6085.7032.954
Percentage of InterestIncomeExpenseNet6.47.67.74.1
Percentage of InterestAndDividendIncomeOperating6.16.70.03.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:PegasusBank0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302013-09-30
Value5.9051.5831.5271.6541.4111.1711.2671.2411.3581.5941.491
Percentage of InterestIncomeExpenseNet7.62.12.12.32.11.81.91.92.13.43.7
Percentage of InterestAndDividendIncomeOperating7.21.90.01.91.71.40.01.61.83.23.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4.64310121414131211107.4865.8755.7254.7284.2353.7543.7123.6163.5913.1133.0643.0283.053.0773.2053.8622.9913.3863.4553.5483.7533.9464.424.7615.1855.3286.2756.8127.1056.6296.917
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating5.712.40.016.517.116.90.014.913.410.60.09.17.77.20.06.76.66.70.06.16.16.30.06.57.96.60.07.88.18.60.09.810.511.30.013.615.216.00.016.1

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value25284142434141413936363233332927262523242824222720
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating31.133.60.049.752.750.70.054.153.052.10.051.654.956.20.049.448.547.00.049.057.350.70.055.641.3

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-21.202-23.359-34.265-35.94-34.241-31.922-31.692-32.919-30.639-29.101-19.738-21.682-22.504-21.756-19.049-18.13-17.848-16.857-16.093-16.446-20.484-16.442-16.561-19.287-15.034
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-83.8-82.7-82.1-83.6-78.1-77.8-77.2-78.5-76.9-78.8-53.4-66.7-66.9-65.5-65.4-66.6-67.6-66.9-67.4-67.3-72.6-66.7-72.3-69.8-74.7
Percentage of InterestAndDividendIncomeOperating-26.0-27.80.0-41.6-41.2-39.40.0-42.5-40.8-41.10.0-34.4-36.7-36.90.0-32.9-32.8-31.50.0-33.0-41.6-33.80.0-38.8-30.9
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, banf:CommunityBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value152429293028282727
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest61.486.569.869.168.568.469.165.670.1
Percentage of InterestAndDividendIncomeOperating19.129.10.034.436.234.60.035.537.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:CommunityBanks0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, banf:ExecutiveOperationsAndSupport


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value189.40323252725242623
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest72.033.356.660.263.061.060.062.859.3
Percentage of InterestAndDividendIncomeOperating22.411.20.029.933.230.90.034.031.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:ExecutiveOperationsAndSupport0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, banf:MetropolitanBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3.6131017151415151614
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest14.336.940.936.533.937.537.039.537.4
Percentage of InterestAndDividendIncomeOperating4.412.40.018.117.919.00.021.419.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:MetropolitanBanks0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value1.3451.5982.3831.404
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest5.35.75.73.3
Percentage of InterestAndDividendIncomeOperating1.71.90.01.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments banf:PegasusBank0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value7.7865.7593.7816.2395.5724.4994.5564.444.028
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest30.820.49.114.512.711.011.110.610.1
Percentage of InterestAndDividendIncomeOperating9.66.90.07.26.75.60.05.75.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.0

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4.5765.6426.2489.5979.6619.1778.3329.0359.257.32117101011109.2328.9088.628.1638.7949.6778.40647-8.8325.4265.885.9876.5646.7997.17548-6.396.6938.0397.0125.6385.9476.4795.7646.5896.262
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating5.66.70.011.111.611.30.011.712.310.30.017.217.018.90.016.816.316.10.017.619.617.30.0-17.811.113.00.014.915.416.40.0-14.214.717.60.012.213.314.60.015.414.7

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2022353334313232302919212322181717161515181615181414131412131213111411121011101111
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating25.526.90.038.641.139.30.042.540.741.80.034.537.837.40.032.632.130.90.031.337.733.40.037.830.132.30.032.928.630.50.030.725.830.60.027.122.625.60.027.525.9

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2022353334313232302919212322181717161515181615181414131412131213111411121011101111
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating25.526.90.038.641.139.30.042.540.741.80.034.537.837.40.032.632.130.90.031.337.733.40.037.830.132.30.032.928.630.50.030.725.830.60.027.122.625.60.027.525.9
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value20293533373435313028172123211617181714151616151815141314101211131112101211117.9151111
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating25.234.60.038.645.042.50.041.140.039.80.034.038.737.10.031.533.131.90.031.632.634.90.037.232.132.40.032.024.829.50.030.124.626.40.028.025.825.20.026.827.6

None

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


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
Value2022353334313232302919212322181717161515181615181414
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating25.526.90.038.641.139.30.042.540.741.80.034.537.837.40.032.632.130.90.031.337.733.40.037.830.132.3

None

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value20223533343132323029192123221817171615151816151814141314121311131114111210
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating25.526.90.038.641.139.30.042.540.741.80.034.537.837.40.032.632.130.90.031.337.733.40.037.830.132.30.032.928.630.50.030.725.830.60.027.122.6

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-292011-03-312010-12-312010-09-302010-06-30
Value961286698565838876427709757476027622761572537132704671897018678366836740669264066498657065746406636863756038592657495773602258365671573756085472100005239506045994628
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value-1088.669-1064.031-1030.223-1012.837-1064.086-1031.498-1009.052-989.549-935.097-907.008-845.986-831.808-815.33-791.912-773.722-758.77-738.685-724.605-717.371-706.186-695.166-677.004-662.647-648.031-635.212-622.15-611.849-595.767-585.334-579.801-564.757-564.977-546.289
Percentage of Assets-11.3-12.3-12.0-12.1-13.9-13.4-13.3-13.0-12.3-11.9-11.7-11.7-11.6-11.0-11.0-11.2-11.1-10.7-10.7-11.0-10.7-10.3-10.1-10.1-10.0-9.8-10.1-10.1-10.2-10.0-9.4-9.7-9.7
Percentage of Assets-11.3-12.3-12.0-12.1-13.9-13.4-13.3-13.0-12.3-11.9-11.7-11.7-11.6-11.0-11.0-11.2-11.1-10.7-10.7-11.0-10.7-10.3-10.1-10.1-10.0-9.8-10.1-10.1-10.2-10.0-9.4-9.7-9.7
Percentage of Assets us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, banf:CommunityBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value57035157499849704981489245444107408739733764372335903627380137453660
Percentage of Assets59.359.558.459.365.264.662.764.164.262.362.362.862.462.863.164.265.3
Percentage of Assets59.359.558.459.365.264.662.764.164.262.362.362.862.462.863.164.265.3
Percentage of Assets us-gaap:OperatingSegments banf:CommunityBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, banf:ExecutiveOperationsAndSupport


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value248845950867883861885647657816703647706690602636602
Percentage of Assets2.69.711.110.311.611.412.210.110.312.811.610.912.312.010.010.910.7
Percentage of Assets2.69.711.110.311.611.412.210.110.312.811.610.912.312.010.010.910.7
Percentage of Assets us-gaap:OperatingSegments banf:ExecutiveOperationsAndSupport100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, banf:MetropolitanBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value30352863280627202795274325522189214220932079203119451926199618921738
Percentage of Assets31.633.032.832.436.636.235.234.233.632.834.434.333.833.433.232.431.0
Percentage of Assets31.633.032.832.436.636.235.234.233.632.834.434.333.833.433.232.431.0
Percentage of Assets us-gaap:OperatingSegments banf:MetropolitanBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value774757738731
Percentage of Assets8.18.78.68.7
Percentage of Assets8.18.78.68.7
Percentage of Assets us-gaap:OperatingSegments banf:PegasusBank100.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312014-09-302013-12-312013-09-30
Value9381081021124584117110103120
Percentage of Assets9.81.31.21.30.61.11.61.71.72.0
Percentage of Assets9.81.31.21.30.61.11.61.71.72.0
Percentage of Assets us-gaap:OperatingSegments us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Liabilities

us-gaap:Liabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value85787645756074096685678166716717676067776477636762986459630760896006607860375760586459485965581057885806548153805214524655025326517252465125499747974772460141454182
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets89.288.288.388.387.588.088.188.488.789.089.389.389.489.889.989.889.990.290.289.990.290.590.790.790.991.190.890.890.790.991.491.391.291.491.491.391.191.190.990.190.4

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value96128669856583887642770975747602762276157253713270467189701867836683674066926406649865706574640663686375603859265749577360225836567157375608547252675239506045994628
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value103410231004979956927902884862838775764748729711693676662655646634621609596580568556545534527519510499491483474470466458453445430
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.811.811.711.712.512.011.911.611.311.010.710.710.610.210.110.210.19.89.810.19.89.59.39.39.18.99.29.29.39.18.68.78.88.68.68.78.98.99.19.99.60.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value9.699.8793.4543.6293.6550.401-2.139-4.672-3.638-3.715-2.3270.1640.446-0.0840.0941.9852.6032.0571.5272.5972.4524.9324.1934.5664.8983.943.9073.8684.2255.8866.3176.7056.9597.5119.444109.7458.3138.5051011101114
Percentage of StockholdersEquity0.91.00.30.40.40.0-0.2-0.5-0.4-0.4-0.30.00.1-0.00.00.30.40.30.20.40.40.80.70.80.80.70.70.70.81.11.21.31.41.52.02.12.11.81.92.42.50.02.60.0
Percentage of Assets0.10.10.00.00.00.0-0.0-0.1-0.0-0.0-0.00.00.0-0.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value154153153151150150149149148147107106121120117111105103102100999796939189888684828280797877747473737271706967
Percentage of StockholdersEquity15.015.015.315.515.816.216.616.917.217.613.913.916.216.516.516.015.615.715.715.615.615.715.915.715.815.815.915.915.815.715.915.815.915.916.015.815.815.815.916.016.00.016.20.0
Percentage of Assets1.61.81.81.82.01.92.02.01.91.91.51.51.71.71.71.61.61.51.51.61.51.51.51.51.41.41.51.51.51.41.41.41.41.41.41.41.41.41.41.61.50.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value3232323232323232323231311515151515151515151515151515151515151515151515151515151515151515
Percentage of StockholdersEquity3.23.23.33.33.43.53.63.73.83.94.14.22.12.22.22.32.32.32.42.42.52.52.52.62.72.72.82.82.92.92.93.03.03.13.13.23.23.33.43.43.40.03.60.0
Percentage of Assets0.30.40.40.40.40.40.40.40.40.40.40.40.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value837826815792769744722707684661638625610593577565552541535527517503492482468458448439431423415407398390381374371369361355347340334315
Percentage of StockholdersEquity80.980.881.180.880.480.380.080.079.478.982.381.981.681.381.281.481.781.781.781.681.581.080.980.980.880.880.680.680.680.380.079.979.779.578.978.978.979.178.978.378.10.077.70.0
Percentage of Assets8.79.59.59.410.19.79.59.39.08.78.88.88.78.38.28.38.38.08.08.28.07.77.57.57.47.27.47.47.57.36.97.07.06.86.86.87.07.07.17.77.50.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1788154818681424171620381851170615971598
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.617.921.818.824.428.326.425.223.923.9
Percentage of Assets us-gaap:FairValueInputsLevel20.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value968000.0964000.01007000.0842000.0758000.0759000.0777000.0740000.0759000.0733000.0547000.0547000.0547000.0547000.0548000.0560000.0580000.0581000.0602000.0444000.0445000.0444000.0444000.0444000.0458000.0408000.0374000.0424000.0424000.0443000.0456000.0457000.0457000.0457000.0457000.0458000.0377000.0377000.0330000.0267000.0268000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value23221520620318017717417014614113413012712712612612612712612012012212112112112111711811711611511311311411111010298979291
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.52.42.42.42.32.32.21.91.91.81.81.81.81.81.91.91.91.91.91.91.91.81.91.91.92.02.02.02.01.91.92.02.02.02.02.01.91.92.02.0

None

us-gaap:Goodwill

us-gaap:Goodwill


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value14914914814779797979797954545454545454545444444444444445444444444444444444444444443535
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.71.71.81.01.01.11.01.01.00.70.80.80.80.80.80.80.80.80.70.70.70.70.70.70.70.70.80.80.80.70.80.80.80.80.80.80.90.90.80.8

us-gaap:Goodwill us-gaap:BusinessAcquisition

banf:CitizensBankShareInc


None
Period End2020-03-05
Value1.3
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets banf:CitizensBankShareInc0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

banf:CommunityBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value616159595959595960644040404040404040403030303030303030
Percentage of Goodwill40.840.840.340.775.175.175.175.175.381.174.174.174.174.174.174.174.174.174.168.668.668.968.968.668.668.668.5
Percentage of Assets0.60.70.70.70.80.80.80.80.80.80.60.60.60.60.60.60.60.60.60.50.50.50.50.50.50.50.6
Percentage of Assets banf:CommunityBanks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.80.80.9

banf:ExecutiveOperationsAndSupport


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.6240.6240.6240.6240.6240.6240.6240.6240.450.450.450.450.450.450.450.450.450.450.450.450.450.450.450.450.450.450.498
Percentage of Goodwill0.40.40.40.40.80.80.80.80.60.60.80.80.80.80.80.80.80.80.81.01.01.01.01.01.01.01.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets banf:ExecutiveOperationsAndSupport0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.1

banf:MetropolitanBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1313131313131313139.2058.0788.0788.0788.0788.0788.0788.0788.0788.0788.0788.0788.0788.0788.0788.0798.0798.079
Percentage of Goodwill9.29.29.39.417.317.317.317.317.311.514.914.914.914.914.914.914.914.914.918.118.118.018.018.118.118.118.1
Percentage of Assets0.10.20.20.20.20.20.20.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.2
Percentage of Assets banf:MetropolitanBanks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.40.50.5

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-302019-08-15
Value6868686767
Percentage of Goodwill45.945.946.345.80.0
Percentage of Assets0.70.80.80.80.0
Percentage of Assets banf:PegasusBank0.00.00.00.00.0

None

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


None
Period End2020-06-302020-03-312019-12-312018-12-312013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value20212216111112121314
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.30.20.20.20.20.20.20.3

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CoreDeposits


None
Period End2020-06-302020-03-312019-12-312018-12-312013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value202121146.9657.3027.6588.0288.3989.138
Percentage of FiniteLivedIntangibleAssetsNet96.396.296.189.862.763.063.463.663.864.3
Percentage of Assets0.20.20.30.20.10.10.10.10.10.2
Percentage of Assets us-gaap:CoreDeposits0.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


None
Period End2020-06-302020-03-312019-12-312018-12-312013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value0.7730.8280.8831.5843.4973.5843.6713.7583.8454.018
Percentage of FiniteLivedIntangibleAssetsNet3.73.83.99.631.530.930.429.829.228.3
Percentage of Assets0.00.00.00.00.10.10.10.10.10.1
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value103410231004979956927902884862838775764748729711693676662655646634621609596580568556545534527519510499491483474470466458453445430
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.811.811.711.712.512.011.911.611.311.010.710.710.610.210.110.210.19.89.810.19.89.59.39.39.18.99.29.29.39.18.68.78.88.68.68.78.98.99.19.99.60.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value9.699.8793.4543.6293.6550.401-2.139-4.672-3.638-3.715-2.3270.1640.446-0.0840.0941.9852.6032.0571.5272.5972.4524.9324.1934.5664.8983.943.9073.8684.2255.8866.3176.7056.9597.5119.444109.7458.3138.5051011101114
Percentage of StockholdersEquity0.91.00.30.40.40.0-0.2-0.5-0.4-0.4-0.30.00.1-0.00.00.30.40.30.20.40.40.80.70.80.80.70.70.70.81.11.21.31.41.52.02.12.11.81.92.42.50.02.60.0
Percentage of Assets0.10.10.00.00.00.0-0.0-0.1-0.0-0.0-0.00.00.0-0.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value154153153151150150149149148147107106121120117111105103102100999796939189888684828280797877747473737271706967
Percentage of StockholdersEquity15.015.015.315.515.816.216.616.917.217.613.913.916.216.516.516.015.615.715.715.615.615.715.915.715.815.815.915.915.815.715.915.815.915.916.015.815.815.815.916.016.00.016.20.0
Percentage of Assets1.61.81.81.82.01.92.02.01.91.91.51.51.71.71.71.61.61.51.51.61.51.51.51.51.41.41.51.51.51.41.41.41.41.41.41.41.41.41.41.61.50.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value3232323232323232323231311515151515151515151515151515151515151515151515151515151515151515
Percentage of StockholdersEquity3.23.23.33.33.43.53.63.73.83.94.14.22.12.22.22.32.32.32.42.42.52.52.52.62.72.72.82.82.92.92.93.03.03.13.13.23.23.33.43.43.40.03.60.0
Percentage of Assets0.30.40.40.40.40.40.40.40.40.40.40.40.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value837826815792769744722707684661638625610593577565552541535527517503492482468458448439431423415407398390381374371369361355347340334315
Percentage of StockholdersEquity80.980.881.180.880.480.380.080.079.478.982.381.981.681.381.281.481.781.781.781.681.581.080.980.980.880.880.680.680.680.380.079.979.779.578.978.978.979.178.978.378.10.077.70.0
Percentage of Assets8.79.59.59.410.19.79.59.39.08.78.88.88.78.38.28.38.38.08.08.28.07.77.57.57.47.27.47.47.57.36.97.07.06.86.86.87.07.07.17.77.50.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3232323232323232323231311515151515151515151515151515151515151515151515151515151515
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.40.40.40.40.40.40.40.40.40.40.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.30.30.30.30.30.30.30.3

None

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-03-312013-12-31
Value1541531531511501501491491481471071061211201171111051031021009997968988
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.81.81.82.01.92.02.01.91.91.51.51.71.71.71.61.61.51.51.61.51.51.51.41.5

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value837826815792769744722707684661638625610593577565552541535527517503492482468458448439431423415407398390381374371369361355347
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.79.59.59.410.19.79.59.39.08.78.88.88.78.38.28.38.38.08.08.28.07.77.57.57.47.27.47.47.57.36.97.07.06.86.86.87.07.07.17.77.5

None

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value9.699.8793.4543.6293.6550.401-2.139-4.672-3.638-3.715-2.3270.1640.446-0.0840.0941.9852.6032.0571.5272.5972.4524.9324.1934.5664.8983.943.9073.8684.2255.8866.3176.7056.9597.5119.444109.7458.3138.5051011
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.00.00.00.0-0.0-0.1-0.0-0.0-0.00.00.0-0.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.2

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4735464035363143292627237.59271923121814149.804178.862515914
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating58.242.00.046.742.745.30.056.439.137.20.036.60.063.043.353.80.040.732.232.50.038.419.858.60.034.5

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-720.928-386.215-23.06-146.012297-78.162-338.67636-8.50626-92.422-85.285-81.425-77.4691512-156.552-19.916-18.1988.776-49.252367478-122.05324
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-885.1-459.90.0-168.9358.1-96.60.046.8-11.336.70.0-135.30.0-175.635.527.80.0-44.1-40.119.20.078.2166.8177.80.058.1

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value91331142103-105.99594-60.954-55.803-24.913-38.16110562104156-30.55-264.889176150-69.47105136-14.75320157141-37.78
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1121.037.50.0119.3-127.6116.90.0-72.1-33.2-53.80.098.80.0354.6-69.3-604.10.0332.8-153.0230.70.0-31.946.4356.40.0-88.1

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value239-319.421166-2.57222753-367.911
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating294.0-380.40.0-3.0273.265.70.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4735464035363143292627237.59271923121814149.804178.862515914
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating58.242.00.046.742.745.30.056.439.137.20.036.60.063.043.353.80.040.732.232.50.038.419.858.60.034.5

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2022353334313232302919212322181717161515181615181414131412131213111411121011101111
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating25.526.90.038.641.139.30.042.540.741.80.034.537.837.40.032.632.130.90.031.337.733.40.037.830.132.30.032.928.630.50.030.725.830.60.027.122.625.60.027.525.9

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2022353334313232302919212322181717161515181615181414131412131213111411121011101111
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating25.526.90.038.641.139.30.042.540.741.80.034.537.837.40.032.632.130.90.031.337.733.40.037.830.132.30.032.928.630.50.030.725.830.60.027.122.625.60.027.525.9
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


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
Value4.5124.4554.3624.113.7733.7443.7423.4733.1883.1432.8453.042.9392.9673.0093.1163.1473.1113.1672.9322.8942.9082.8832.8762.8332.7572.8132.7312.7822.7512.8592.712.6832.5882.5612.5742.2662.2812.2282.146
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


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
Value-2776000.0-1211000.01900000.0141000.0-434000.0-459000.03072000.0687000.0-487000.0-117000.06073000.0-967000.0-238000.0-485000.01021000.0-1152000.0-1088000.0-829000.0-874000.0435000.0-878000.0-586000.0-576000.0-164000.0-1009000.0-1934000.0-2272000.02124000.0-239000.0-96000.0-1115000.0558000.0-112000.0-20000.0-1806000.0-2167000.0-959000.0-350000.0-264000.0120000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value406000.0426000.0389000.0347000.0367000.0174000.0371000.0353000.0322000.0306000.0361000.0354000.0282000.0222000.0370000.0365000.0450000.0451000.0474000.0489000.0290000.0464000.0452000.0448000.0429000.0347000.0266000.0399000.0321000.0374000.0341000.0391000.0357000.0441000.02058000.0371000.0271000.0375000.0234000.0381000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-720.928-386.215-23.06-146.012297-78.162-338.67636-8.50626-92.422-85.285-81.425-77.4691512-156.552-19.916-18.1988.776-49.252367478-122.05324
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-885.1-459.90.0-168.9358.1-96.60.046.8-11.336.70.0-135.30.0-175.635.527.80.0-44.1-40.119.20.078.2166.8177.80.058.1

None

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value18117.1896.9586.1156.7927.465279.4637.1686.5124.9273.1993.3692.992.7972.1092.9391.7284.7380.694.1072.9492.7582.6293.1543.1433.7013.3693.6834.1482.2752.015.0053.9414.304
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value91331142103-105.99594-60.954-55.803-24.913-38.16110562104156-30.55-264.889176150-69.47105136-14.75320157141-37.78
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1121.037.50.0119.3-127.6116.90.0-72.1-33.2-53.80.098.80.0354.6-69.3-604.10.0332.8-153.0230.70.0-31.946.4356.40.0-88.1

None

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302011-12-312011-09-30
Value1010109.7929.7869.7819.8256.8746.8686.6986.6926.0456.0386.0085.9645.6025.5895.6155.6135.2925.2735.2715.2544.7734.7634.7534.7434.4248.8284.0914.0863.82
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value1.253831.384831.257731.258651.20691.22871.21671.20721.2031751.2266751.2736251.2636250.6391250.6310.707450.8229750.966850.9985491.0181491.0286751.0479071.0416251.0296571.0646241.1046921.129567115811531206120812161209125612981172
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value33.0434.6532.730.2429.0728.9328.4828.1427.4127.2225.924.8448.246.2344.9243.4641.5741.2440.6939.9839.4437.2936.5535.6835.1634.5634.4533.2632.8632.0831.9831.130.5830.1428.32
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6700000.0300000.0500000.0-400000.0-4200000.03525000.0-525000.0-300000.02400000.0-800000.0-1200000.01100000.0200000.0300000.0500000.02200000.0800000.0-3277000.01702000.032000.0-1939000.0-7491000.0-844000.03714000.04013000.0-484000.01552000.0-1369000.0320000.0-1094000.0-675000.0-983000.0-951000.0-4005000.0-7000.0-5700000.0-150000.04650000.0600000.0
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

banf:CashManagement

banf:CashManagement


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
Value4.2554.324.2584.434.4023.7763.3383.3833.3813.0212.7982.8042.7992.7542.7132.8532.7322.3181.8991.9061.8861.8191.6831.771.7031.585
Percentage of CashManagement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

banf:FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs

banf:FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs


None
Period End2020-06-302019-06-30
Value462000.0585000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs100.0100.0

banf:FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-30
Value-330000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs-71.4

banf:FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-30
Value287000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs62.1

banf:ConsumerNonRealEstate


None
Period End2020-06-302019-06-30
Value235000.0162000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs50.927.7

banf:FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-30
Value113000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs24.5

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-30
Value56000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs12.1

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-30
Value28000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs6.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302019-06-30
Value7000.0143000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs1.524.4

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-30
Value66000.0
Percentage of FinancingReceivableAllowanceForCreditGrossRecoveriesAndLossesWriteOffs14.3

banf:FinancingReceivableAllowanceForCreditLossesNetChargeOffs

banf:FinancingReceivableAllowanceForCreditLossesNetChargeOffs


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-87000.01048000.0240000.0158000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs100.0100.0100.0100.0

banf:FinancingReceivableAllowanceForCreditLossesNetChargeOffs us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value-747000.0564000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs858.653.8

banf:FinancingReceivableAllowanceForCreditLossesNetChargeOffs us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value221000.070000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-254.06.7

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value178000.0264000.0124000.049000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-204.625.251.731.0

banf:OtherLoans


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0-2000.0-43000.0-35000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-0.0-0.2-17.9-22.2

banf:FinancingReceivableAllowanceForCreditLossesNetChargeOffs us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-30
Value112000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-128.7

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value53000.03000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-60.90.3

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value28000.01000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-32.20.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value6000.0-2000.0118000.050000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-6.9-0.249.231.6

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value62000.0150000.0
Percentage of FinancingReceivableAllowanceForCreditLossesNetChargeOffs-71.314.3

banf:PaymentToAcquireTaxCreditInvestments

banf:PaymentToAcquireTaxCreditInvestments


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.1380.2190.0526.894
Percentage of PaymentToAcquireTaxCreditInvestments100.0100.0100.0100.0

banf:PaymentsToAcquireEquitySecurities

banf:PaymentsToAcquireEquitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value195000.039000.01160000.0157000.0821000.01828000.01072000.0409000.0
Percentage of PaymentsToAcquireEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0

banf:PercentageOfAvailableForSaleSecuritiesHeld us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancialInstrument

banf:PercentageOfAvailableForSaleSecuritiesHeld

us-gaap:AccountingStandardsUpdate201613, banf:USGovernmentSponsoredEntitiesAndAgencies


None
Period End2020-03-31
Value0.95
Percentage of PercentageOfAvailableForSaleSecuritiesHeld100.0

us-gaap:AccountingStandardsUpdate201613, us-gaap:USTreasurySecurities


None
Period End2020-03-31
Value0.95
Percentage of PercentageOfAvailableForSaleSecuritiesHeld100.0

banf:ProceedsFromPaydownsAndSalesOfEquitySecurities

banf:ProceedsFromPaydownsAndSalesOfEquitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value29000.0408000.0281000.05000.01782000.0110000.070000.0334000.0
Percentage of ProceedsFromPaydownsAndSalesOfEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0

banf:TransferToRepossessedAssets

banf:TransferToRepossessedAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value404000.0318000.0527000.0319000.0326000.0301000.0280000.0292000.0330000.0220000.0355000.0275000.0249000.0363000.0285000.0367000.0346000.0404000.0304000.0370000.0204000.0220000.0254000.0233000.0395000.0327000.0225000.0352000.0385000.0209000.0370000.0369000.0115000.0180000.0364000.0183000.0
Percentage of TransferToRepossessedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-121000.0461000.0518000.0114000.01702000.01948000.0280000.064000.028000.049000.040000.05000.056000.047000.033000.023000.0-36000.0-148000.0-273000.0-302000.0-297000.0-148000.0-198000.0-200000.0-236000.0-276000.0-285000.0-439000.0-422000.0-417000.0-308000.0-311000.0-370000.0-412000.0-568000.0-781000.0-1206000.0-1352000.0-930000.0-885000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value406000.0426000.0389000.0347000.0367000.0174000.0371000.0353000.0322000.0306000.0361000.0354000.0243000.0222000.0370000.0365000.0450000.0451000.0474000.0489000.0290000.0464000.0452000.0448000.0429000.0347000.0266000.0399000.0321000.0374000.0341000.0391000.0357000.0441000.02058000.0371000.0271000.0375000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value303000.0317000.0290000.0259000.0273000.0130000.0276000.0263000.0240000.0228000.0377000.0217000.0173000.0151000.0227000.0223000.0276000.0277000.0291000.0300000.0178000.0284000.0277000.0275000.0263000.0213000.0163000.0245000.0197000.0229000.0209000.0240000.0219000.0270000.0220000.0227000.0166000.0
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:StatementEquityComponents

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.320.320.320.320.30.30.30.30.210.210.210.210.380.380.380.380.360.360.360.360.340.340.340.34
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtAndEquitySecuritiesGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-595000.050000.0-9000.00821000.010000.0-64000.0115000.0-14000.04412000.0-22000.0-330000.0
Percentage of DebtAndEquitySecuritiesGainLoss100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationArrangementWithIndividualSharesIssued us-gaap:PlanName

us-gaap:DeferredCompensationArrangementWithIndividualSharesIssued

banf:BancFirstDeferredStockCompensationPlan


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
Value01307.001180.008362.0001049.02842.0002136.07782.0
Percentage of DeferredCompensationArrangementWithIndividualSharesIssued0.0100.00.0100.00.0100.00.00.0100.0100.00.00.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.5443.4913.3553.2683.0152.9852.9652.7332.4292.412.2982.4932.3922.422.4612.5562.5672.532.5652.4882.4492.4642.4392.4322.3752.3492.4392.3072.3582.3082.4032.2532.2262.1312.1042.1171.8891.9041.8981.8791.836
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:DividendsCommonStock

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value101010109.799.7399.8289.8276.8846.8596.6996.6866.0556.0676.0115.9345.65.5795.6195.625.2835.2775.2755.2524.7844.7534.7484.7464.4114.4224.4314.3954.0944.1413.9964.0973.8483.8463.8373.8373.536
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value103000.0109000.099000.088000.094000.044000.095000.090000.082000.078000.0-16000.0137000.0109000.071000.0143000.0142000.0174000.0174000.0183000.0189000.0112000.0180000.0175000.0173000.0166000.0134000.0103000.0154000.0124000.0145000.01052000.0-151000.0-138000.0171000.0926000.0-144000.0-105000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions


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
Value86000.099000.0762000.022000.0193000.037000.055000.0195000.0246000.0729000.0484000.0578000.0399000.01784000.02127000.01958000.0345000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value48000.095000.0640000.025000.0161000.0102000.045000.0169000.0251000.0647000.0372000.0445000.01408000.0376000.0
Percentage of ExcessTaxBenefitFromShareBasedCompensationOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-14000.07000.0-74000.032000.011000.0-3000.0-48000.033000.0-327000.0-11000.0206000.0-676000.0-1000.084000.0-287000.0100000.07970000.00-3440000.0-589000.029000.0-576000.0784000.0-52000.01195000.0-17000.0-454000.017000.0351000.0-266000.0-4529000.02066000.0-126000.06000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueOfAssetsAcquired

us-gaap:FairValueOfAssetsAcquired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value938000.02660000.01496000.01281000.01745000.0892000.02773000.02113000.01051000.0622000.01338000.0668000.0861000.01264000.0385000.01610000.01212000.0748000.0-712000.01003000.02466000.0480000.01754000.01781000.0854000.0393000.0648000.0743000.0845000.0645000.01280000.0718000.0740000.0839000.01624000.0869000.0
Percentage of FairValueOfAssetsAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FederalDepositInsuranceCorporationPremiumExpense


None
Period End2020-06-302020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value365000.0136000.0544000.0533000.0571000.0597000.0640000.0619000.0578000.0553000.0542000.0588000.0569000.0641000.0855000.0839000.0876000.0820000.0836000.0826000.0835000.0810000.0873000.0773000.0768000.0750000.0742000.0743000.0761000.0745000.0724000.0719000.0698000.0786000.0764000.01426000.01349000.01310000.01574000.0
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease


None
Period End2020-06-302020-03-31
Value0502000.0
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease0.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value01000.0
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease0.00.2

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value062000.0
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease0.012.4

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value0432000.0
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease0.086.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value07000.0
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease0.01.4

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery


None
Period End2020-06-302020-03-312019-06-302019-03-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value549000.0112000.0345000.0185000.0120000.082000.0173000.099000.059000.096000.0120000.0211000.0925000.0146000.071000.0219000.0149000.0172000.01124000.0-89000.0-86000.0336000.0882000.0-108000.0-117000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value417000.07000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery76.06.2

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value66000.017000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery12.015.2

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-312019-06-302019-03-312016-06-302015-06-30
Value57000.057000.038000.071000.038000.040000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery10.450.911.038.431.767.8

banf:OtherLoans


None
Period End2020-06-302020-03-312019-06-302019-03-312016-06-30
Value02000.043000.035000.07000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.01.812.518.95.8

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-30
Value1000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.2

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-30
Value3000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.5

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1000.027000.025000.02000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.224.17.21.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value4000.02000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.71.8

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


None
Period End2020-03-312019-03-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1160000.0343000.0929000.01280000.03123000.03174000.0266000.0762000.0538000.0926000.0681000.0474000.0350000.0330000.0347000.0533000.01081000.0500000.0512000.0532000.0733000.0629000.01174000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-03-31
Value571000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs49.2

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-03-31
Value87000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs7.5

banf:ConsumerNonRealEstate


None
Period End2020-03-312019-03-312016-06-302015-06-30
Value321000.0120000.0134000.0103000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs27.735.014.438.7

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-03-31
Value3000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.3

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-03-31
Value1000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-03-312019-03-31
Value25000.052000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs2.215.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-03-31
Value152000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs13.1

us-gaap:FinancingReceivableChangeInMethodCreditLossExpenseReversal

us-gaap:FinancingReceivableChangeInMethodCreditLossExpenseReversal


None
Period End2020-06-302020-03-31
Value0.0-3.2
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.0100.0

us-gaap:FinancingReceivableChangeInMethodCreditLossExpenseReversal us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value0.02.488
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.0-77.8

us-gaap:FinancingReceivableChangeInMethodCreditLossExpenseReversal us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value0.0-1.408
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.044.0

us-gaap:FinancingReceivableChangeInMethodCreditLossExpenseReversal us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value0.011
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.0-370.3

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-31
Value0.0-0.622
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.019.4

banf:OtherLoans


None
Period End2020-06-302020-03-31
Value0.0-0.116
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.03.6

us-gaap:FinancingReceivableChangeInMethodCreditLossExpenseReversal us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value0.0-5.507
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.0172.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value0.0-2.806
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.087.7

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.0-1.056
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.033.0

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.0-0.778
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.024.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-31
Value0.0-1.408
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.044.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value0.0-3.831
Percentage of FinancingReceivableChangeInMethodCreditLossExpenseReversal0.0119.7

us-gaap:GainLossOnDispositionOfOtherFinancialAssets

us-gaap:GainLossOnDispositionOfOtherFinancialAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value49000.086000.0-27000.0-1000.0-7000.0-4000.0227000.0195000.0
Percentage of GainLossOnDispositionOfOtherFinancialAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfOtherAssets

us-gaap:GainLossOnSaleOfOtherAssets


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
Value106000.02183000.0918000.0-1000.0-44000.0499000.0255000.0185000.0135000.021000.020000.0-4000.0-27000.0-35000.0-42000.0-22000.094000.01222000.0-11000.011000.0272000.0-207000.046000.0179000.0473000.062000.0554000.012000.0125000.099000.0-91000.035000.0258000.030000.0-6000.08000.09000.01049000.019000.0138000.0
Percentage of GainLossOnSaleOfOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSalesOfLoansNet

us-gaap:GainLossOnSalesOfLoansNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1561000.0781000.01089000.0964000.0868000.0698000.0649000.0800000.0802000.0651000.0741000.0732000.0816000.0632000.0705000.0863000.0695000.0562000.0434000.0545000.0549000.0440000.0426000.0569000.0467000.0351000.0367000.0560000.0691000.0688000.0698000.0737000.0766000.0572000.0614000.0529000.0420000.0452000.01629000.0506000.0464000.0
Percentage of GainLossOnSalesOfLoansNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillAcquiredDuringPeriod

us-gaap:GoodwillAcquiredDuringPeriod


None
Period End2020-03-312018-03-31
Value1.31925
Percentage of GoodwillAcquiredDuringPeriod100.0100.0

us-gaap:GoodwillAcquiredDuringPeriod us-gaap:StatementBusinessSegments

banf:CommunityBanks


None
Period End2020-03-312018-03-31
Value1.31924
Percentage of GoodwillAcquiredDuringPeriod100.095.6

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet


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
Value3634000.0-196000.0356000.0-3307000.0564000.01500000.01010000.0-238000.01507000.01111000.01633000.0544000.01705000.0-598000.01570000.0-1113000.0864000.0176000.0999000.0-748000.0384000.0356000.0690000.0-792000.0544000.0-133000.0891000.0-1157000.0-336000.0318000.0-690000.0-866000.0375000.0-1505000.0574000.0-2525000.0139000.0-2062000.0-5093000.0-1245000.0
Percentage of IncreaseDecreaseInAccruedInterestReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInDeposits


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value91344152113-92.464100-37.636-49.043-20.878-31.95311266-158.94514622380-66.893799-109.63-75.58-20.903176351280117174-5.196-239.034193161-35.5441481833563151114-36.674
Percentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInInterestPayableNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-400000.0-543000.0-252000.0-226000.079000.0382000.0415000.0189000.0222000.0353000.0178000.062000.0104000.022000.091000.0-36000.01000.013000.0-41000.0-50000.06000.0-20000.033000.0-50000.0-116000.0-200000.0-51000.0-61000.0-105000.0-158000.019000.0-109000.0-213000.0-237000.0-164000.0-303000.0-43000.0-85000.0
Percentage of IncreaseDecreaseInInterestPayableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InformationTechnologyAndDataProcessing


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1629000.01692000.01634000.01467000.01262000.01480000.01140000.01418000.01195000.01203000.01252000.01110000.01097000.01195000.01229000.01178000.01174000.01215000.01151000.01132000.01179000.01117000.01151000.01183000.01185000.01170000.01198000.01173000.01229000.01185000.01173000.01208000.01158000.01283000.01222000.01302000.01168000.01250000.01152000.01022000.01024000.0
Percentage of InformationTechnologyAndDataProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value8183868683807977757064636159555554535349494850494845454444434645454546464444444242
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseDeposits


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.759.41113131312119.717.2695.5185.2474.33.7253.3173.1493.0923.082.6492.5222.5422.5382.6152.6582.7332.7892.8012.8492.8893.043.3893.7293.8834.2494.4815.1595.9866.2456.3786.3086.471
Percentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseJuniorSubordinatedDebentures


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value492000.0491000.0492000.0491000.0492000.0491000.0545000.0547000.0544000.0535000.0533000.0532000.0530000.0527000.0527000.0524000.0523000.0522000.0492000.0492000.0491000.0491000.0492000.0491000.0492000.0491000.0492000.0492000.0491000.0491000.0491000.0492000.0565000.0586000.0609000.0525000.0525000.0525000.0519000.0491000.0494000.0
Percentage of InterestExpenseJuniorSubordinatedDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestExpenseShortTermBorrowings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1000.07000.03000.07000.012000.010000.010000.042000.08000.035000.04000.06000.04000.03000.02000.02000.02000.01000.01000.01000.01000.01000.03000.06000.05000.02000.02000.01000.01000.02000.05000.07000.08000.08000.025000.026000.03000.04000.04000.01000.01000.0
Percentage of InterestExpenseShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeDepositsWithFinancialInstitutions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.3954.7696.7818.7048.1357.7489.1318.1657.3255.7825.244.9724.4253.442.2861.9681.8521.8021.1281.0091.0661.0621.0891.1121.0961.091.0861.0310.970.9771.0961.0711.0610.9730.9460.930.8860.7750.7180.5520.618
Percentage of InterestIncomeDepositsWithFinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value5754726966656564636255535454494848454645444445494240414040393940404040393636363534
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxExempt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value154000.098000.0111000.0103000.0118000.0126000.0131000.0145000.0162000.0171000.0185000.0187000.0178000.0187000.0218000.0248000.0243000.0255000.0252000.0249000.0235000.0246000.0246000.0262000.0273000.0280000.0278000.0284000.0314000.0346000.0354000.0366000.0411000.0424000.0144000.0502000.0602000.0630000.0348000.0256000.0310000.0
Percentage of InterestIncomeSecuritiesTaxExempt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:InterestIncomeSecuritiesTaxable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.0472.5862.7572.3613.8554.3352.7082.2461.9561.8981.7411.7631.9061.7611.3161.2421.3441.3271.3441.2911.4581.3991.3841.5361.5021.3051.2021.0971.2951.3531.5111.6812.0872.4072.932.7543.0323.6263.1973.1622.994
Percentage of InterestIncomeSecuritiesTaxable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4239404036363535343431313130293030292828272727282725252625252524242424232221222019
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans

us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value651000.0332000.0300000.0400000.0456000.0544000.0600000.0600000.0558000.0542000.0500000.0414000.0387000.0499000.0500000.0518000.0469000.0513000.0500000.0578000.0612000.0310000.0361000.0358000.0254000.0227000.0200000.0322000.0677000.0301000.0347000.0299000.0316000.0338000.0240000.0298000.0
Percentage of LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6461666256565655545551504849484947464946454446464543434342414342424241413936393534
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome

us-gaap:NoninterestIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3235353534323132303032292728272726252625282524242323222321222122202319201917181817
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-21.553-23.912-34.904-36.723-34.823-32.487-32.215-33.636-31.084-29.602-20.29-22.383-22.722-21.796-19.093-18.301-17.893-16.924-16.135-16.615-20.521-16.506-16.605-19.469-15.073-15.128-14.33-14.826-13.094-13.851-12.512-14.162
Percentage of NoninterestIncome-67.2-68.0-98.3-103.1-102.2-101.5-101.1-102.5-102.1-98.3-61.8-76.7-81.2-77.6-69.6-65.5-68.7-66.1-60.9-65.6-71.5-65.3-68.3-78.1-63.8-64.2-64.4-62.7-60.2-61.5-57.4-64.0

us-gaap:NoninterestIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, banf:CommunityBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value131516161614151514131212121211111111
Percentage of NoninterestIncome43.145.146.547.247.746.549.747.048.752.854.952.155.253.954.551.254.150.4

us-gaap:OperatingSegments, banf:ExecutiveOperationsAndSupport


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value252739393735353633201515151513141314
Percentage of NoninterestIncome80.378.2110.5111.3111.3111.0110.1111.3110.480.667.467.767.966.263.565.461.267.3

us-gaap:OperatingSegments, banf:MetropolitanBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value4.5714.74.9024.8624.6354.2094.2344.2664.1843.4173.4633.4133.3623.2133.1163.193.0292.84
Percentage of NoninterestIncome14.213.413.813.613.613.213.313.013.713.714.714.515.113.614.314.213.912.8

us-gaap:OperatingSegments, banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value0.1210.1310.3740.109
Percentage of NoninterestIncome0.40.41.10.3

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-09-302013-09-30
Value9.328109.37610109.8738.959108.8967.7226.864
Percentage of NoninterestIncome29.131.026.430.629.730.928.131.329.231.029.0

us-gaap:NoninterestIncomeOther

us-gaap:NoninterestIncomeOther


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2241000.01773000.01517000.01343000.01209000.01426000.01457000.01896000.01152000.01445000.01239000.01307000.01653000.01430000.01296000.01265000.01298000.01323000.01514000.01214000.01215000.01506000.01345000.01315000.01416000.01596000.01459000.01744000.01269000.01798000.01287000.01513000.01351000.01567000.01286000.01612000.01449000.01735000.01587000.01337000.01170000.0
Percentage of NoninterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OccupancyNet

us-gaap:OccupancyNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.8393.5463.7383.3862.9532.6273.3073.3863.3963.4023.3273.2982.9922.9743.1983.2173.0712.8272.9263.0512.72.8353.1172.922.7842.7892.7862.7682.5012.582.7762.8772.4772.4462.5992.6672.4112.4512.4832.3742.085
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeaseExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value453000.0463000.01633000.0357000.0343000.0357000.01857000.0398000.0395000.0381000.0
Percentage of OperatingLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OperatingLeaseLeaseIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1400000.01400000.01400000.01600000.01500000.01500000.0
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax


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
Value85000.0-2176000.061000.01000.0-1112000.0-868000.0-866000.0352000.0179000.0474000.0850000.0178000.0-280000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-189000.06425000.0-175000.0-26000.03254000.02540000.02533000.0-1034000.0-541000.0-1388000.0-2491000.0-282000.0530000.0-178000.0-1891000.0-618000.0546000.0530000.0-1070000.0145000.0-2480000.0739000.0-373000.0-332000.0958000.033000.039000.0-357000.0-1661000.0-431000.0-388000.0-254000.0-552000.0-1933000.0-720000.0419000.01432000.0-192000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value00000009000.000159000.00-142000.000-85000.00100000.0-98000.003306000.0606000.0445000.00
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax0.00.00.00.00.00.00.0100.00.00.0100.00.0100.00.00.0100.00.0100.0100.00.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-189000.06425000.0-175000.0-26000.03254000.02540000.02533000.0-1027000.0-541000.0-1388000.0-2414000.0-282000.0443000.0-178000.0-1891000.0-670000.0546000.0591000.0-1130000.0145000.0-453000.01111000.0-100000.0-332000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense

us-gaap:OtherNoninterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value101114109.9369.8749.7169.8239.393109.8469.278.0758.9458.3038.527.8068.2289.5447.988.7177.7319.4179.3989.4498.1438.9278.0328.0177.8478.3578.0868.098.2998.3497.5698.0166.5457.7076.3186.567
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


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
Value14-2.3020.4851.8811.4642.91-5.0690.6842.389-8.067-3.686-0.721-2.0765.31-3.8163.183-5.1670.31.5044.454-5.5125.855-1.2388.576-3.8242.205-4.1291.3374.4853.819-7.084-1.1491.4663.619-5.5082.129-0.5574.633-4.2472.133
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromLoansAndLeases


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value68530859128546731-56.82324-48.8197970189-7.36693-15.773534513010313-3.61399
Percentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-653000.0-4988000.0-10460000.0-1300000.0-1126000.05019000.01607000.02683000.0-1257000.0857000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToPurchaseLoansHeldForSale

us-gaap:PaymentsToPurchaseLoansHeldForSale


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
Value118616769574244445343426754404555473339465037384144293648585060645748464338354951
Percentage of PaymentsToPurchaseLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.3030.2321.5710.1320.4550.3260.1010.4140.4331.290.5470.8560.6892.752
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value5.547142139103562.4065.32862535.7296.211233261465047552.404406.8356.1442733118442510139152446254495130106282323
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value233000.0237000.08000.087000.0230000.0210000.012000.0568000.0296000.0213000.0776000.0873000.0283000.0361000.0221000.04349000.0280000.0410000.0759000.0674000.0359000.0311000.0219000.01193000.01971000.0718000.0226000.03986000.01289000.0315000.0354000.03014000.01732000.01099000.0199000.02976000.01485000.01270000.0127000.04989000.0
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfLoansHeldForSale

us-gaap:ProceedsFromSaleOfLoansHeldForSale


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1145674655543415051444865544346564540384847363843403034545754626557454842344019647
Percentage of ProceedsFromSaleOfLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


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
Value303000.0201000.01572000.099000.0455000.0156000.0102000.0413000.0411000.01233000.0547000.0856000.0647000.02610000.03985000.03859000.01001000.0
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProfitLossFromRealEstateOperations

us-gaap:ProfitLossFromRealEstateOperations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12000.02135000.0424000.0-26000.0-97000.0484000.0-130000.0-64000.0-19000.0-26000.0
Percentage of ProfitLossFromRealEstateOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanAndLeaseLosses


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value19191.4122.7582.4331.6841.5160.7471.2250.3143.3233.2761.8410.0721.6722.942.8044.1033.6461.4241.2711.3341.84-3.1153.1291.2180.454-0.0120.5160.32.4460.2330.2480.1730.8290.8852.0130.7880.7180.4690.871
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value19192.4331.684
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value-0.0530.64
Percentage of ProvisionForLoanLossesExpensed-0.33.3

us-gaap:ProvisionForLoanLossesExpensed us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value0.7230.374
Percentage of ProvisionForLoanLossesExpensed3.71.9

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value7.4510
Percentage of ProvisionForLoanLossesExpensed38.551.5

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.5071.0190.2860.056
Percentage of ProvisionForLoanLossesExpensed7.85.211.83.3

banf:OtherLoans


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-0.2380.233-0.002-0.05
Percentage of ProvisionForLoanLossesExpensed-1.21.2-0.1-3.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value3.5483.084
Percentage of ProvisionForLoanLossesExpensed18.415.7

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value2.1981.293
Percentage of ProvisionForLoanLossesExpensed11.46.6

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.672-0.019
Percentage of ProvisionForLoanLossesExpensed3.5-0.1

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.6690.464
Percentage of ProvisionForLoanLossesExpensed3.52.4

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.4340.9310.7930.423
Percentage of ProvisionForLoanLossesExpensed2.24.832.625.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value2.4231.474
Percentage of ProvisionForLoanLossesExpensed12.57.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value00.020000.020000.02000000.020000.02000000.020000.0200
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate0.0100.00.00.00.0100.00.00.00.0100.00.00.00.00.00.0100.00.00.00.0100.00.00.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.3370.3892.9910.0870.7590.1450.2170.7660.9672.861.2511.4931.0324.6135.4975.0630.8910.7791.1181.1291.8920.2371.9911.561.3010.7451.071.4242.0830.348-0.3991.9470.6171.1320.2430.264
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302011-12-312011-09-302011-06-30
Value0.0710.560.03-0.36013.67-0.2216.4914.1213.980.6611.6321.92013.9911.2911.470.1711.8912.0711.0-0.312.7512.331.8310.638.740.3312.1111.36
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:AwardType, us-gaap:PlanName

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:EmployeeStockOption, banf:BancFirstISOP


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value00.2500
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:PlanName

banf:NonEmployeeDirectorsStockOptionPlan


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
Value00.250000.250000.250000.250000.25
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value287000.0220000.01494000.0128000.0433000.0312000.096000.0395000.0410000.01210000.0515000.0811000.0671000.02672000.03885000.03767000.0996000.0871000.01051000.0749000.01080000.0236000.01568000.01554000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value16000.012000.077000.04000.022000.014000.05000.019000.023000.080000.032000.045000.018000.080000.0116000.0135000.032000.031000.034000.029000.050000.08000.055000.050000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation5.65.55.23.15.14.55.24.85.66.66.25.52.73.03.03.63.23.63.23.94.63.43.53.2

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:CommonStock


None
Period End2020-06-302020-03-312016-12-312016-09-302016-06-302016-03-31
Value059000.0000100000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodValue0.0100.00.00.00.0100.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312016-12-312016-09-302016-06-302016-03-31
Value03039000.00005423000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodValue0.05150.80.00.00.05423.0

us-gaap:TransferToOtherRealEstate

us-gaap:TransferToOtherRealEstate


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value534000.02342000.0969000.0962000.01419000.0591000.02493000.01821000.0721000.0402000.0983000.0393000.0612000.0901000.0100000.01243000.0866000.0344000.0-1016000.0633000.02262000.0260000.01500000.01548000.0459000.066000.0423000.0391000.0460000.0436000.0910000.0349000.0625000.0659000.01260000.0686000.0
Percentage of TransferToOtherRealEstate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value424230.0607770.0685310.0688050.0680450.0761660.0742210.0743490.0753880.0357880.0373190.0291120.0292670.0281960.0324530.0328600.0331200.0369920.0363670.0318430.0307350.0247620.0243820.0272640.0271270.0280900.0261570.0287220.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

banf:CapitalConservationBufferToRiskWeightedAssets us-gaap:ConsolidatedEntities

banf:CapitalConservationBufferToRiskWeightedAssets

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.1050.1050.1050.1050.1050.1050.098750.0925
Percentage of CapitalConservationBufferToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.1050.1050.1050.1050.1050.1050.098750.0925
Percentage of CapitalConservationBufferToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

banf:CapitalWithCapitalConservationBuffer us-gaap:ConsolidatedEntities

banf:CapitalWithCapitalConservationBuffer

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value53514743
Percentage of CapitalWithCapitalConservationBuffer100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value680688662649590586537472
Percentage of CapitalWithCapitalConservationBuffer1267.41340.11399.71483.70.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value625635614604589585536471
Percentage of CapitalWithCapitalConservationBuffer1165.11237.71297.31379.90.00.00.00.0

banf:CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferAmount us-gaap:ConsolidatedEntities

banf:CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferAmount

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value35343129
Percentage of CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferAmount100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value453459441433393390346293
Percentage of CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferAmount1267.41340.11399.71483.70.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value416423409402392390346293
Percentage of CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferAmount1165.21237.71297.31379.80.00.00.00.0

banf:CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets us-gaap:ConsolidatedEntities

banf:CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.070.070.070.070.070.070.063750.0575
Percentage of CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.070.070.070.070.070.070.063750.0575
Percentage of CommonEquityTierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

banf:DeferredCompensationArrangementWithIndividualAccumulatedStockUnitsForDeferredBoardFees

banf:DeferredCompensationArrangementWithIndividualAccumulatedStockUnitsForDeferredBoardFees


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value148550.0144550.0143360.0141090.0139860.0137540.0143350.0140950.0139110.0137890.0138770.0136680.067226.067230.070022.068969.068306.067558.066376.060859.056380.055390.051190.0
Percentage of DeferredCompensationArrangementWithIndividualAccumulatedStockUnitsForDeferredBoardFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

banf:DeferredCompensationArrangementWithIndividualStockAveragePrice

banf:DeferredCompensationArrangementWithIndividualStockAveragePrice


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value27.8527.6827.1726.6826.1925.724.9124.3623.8723.3422.8422.3343.6942.8741.7441.1240.6540.1739.6437.4135.3133.9833.21
Percentage of DeferredCompensationArrangementWithIndividualStockAveragePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

banf:FinancingReceivableModificationsDueToImpactOfCaresAct us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:FinancingReceivableModificationsDueToImpactOfCaresAct

us-gaap:CommercialRealEstate


None
Period End2020-06-30
Value939
Percentage of FinancingReceivableModificationsDueToImpactOfCaresAct100.0

banf:FinancingReceivableModificationsDueToImpactOfCaresAct us-gaap:UnusualOrInfrequentItem

banf:COVIDNineteen


None
Period End2020-06-30
Value939
Percentage of FinancingReceivableModificationsDueToImpactOfCaresAct100.0

banf:LettersOfCreditFairValueDisclosure

banf:LettersOfCreditFairValueDisclosure


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
Value476000.0471000.0485000.0473000.0414000.0410000.0421000.0425000.0412000.0483000.0428000.0446000.0443000.0430000.0424000.0428000.0426000.0464000.0
Percentage of LettersOfCreditFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

banf:PaycheckProtectionProgramLoan

banf:PaycheckProtectionProgramLoan


None
Period End2020-06-30
Value825
Percentage of PaycheckProtectionProgramLoan100.0

banf:PaycheckProtectionProgramUnamortizedProcessingFees

banf:PaycheckProtectionProgramUnamortizedProcessingFees


None
Period End2020-06-30
Value26
Percentage of PaycheckProtectionProgramUnamortizedProcessingFees100.0

banf:PercentageOfLoansSecuredByRealEstate

banf:PercentageOfLoansSecuredByRealEstate


None
Period End2020-03-312019-12-312019-09-30
Value0.550.580.59
Percentage of PercentageOfLoansSecuredByRealEstate100.0100.0100.0

banf:PercentageOfLoansSecuredByRealEstate us-gaap:BusinessAcquisition

banf:BancFirst


None
Period End2020-06-30
Value0.5
Percentage of PercentageOfLoansSecuredByRealEstate0.0

banf:PercentageOfLoansSecuredByRealEstate us-gaap:BusinessAcquisition, us-gaap:FinancingReceivablePortfolioSegment

banf:PegasusBank, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value0.510.520.550.53
Percentage of PercentageOfLoansSecuredByRealEstate0.094.594.889.8

banf:TierOneRiskBasedCapitalWithCapitalConservationBufferAmount us-gaap:ConsolidatedEntities

banf:TierOneRiskBasedCapitalWithCapitalConservationBufferAmount

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value43413835
Percentage of TierOneRiskBasedCapitalWithCapitalConservationBufferAmount100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value550557536525477474428369
Percentage of TierOneRiskBasedCapitalWithCapitalConservationBufferAmount1267.41340.11399.71483.80.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value506514497489476473427369
Percentage of TierOneRiskBasedCapitalWithCapitalConservationBufferAmount1165.11237.71297.31379.90.00.00.00.0

banf:TierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets us-gaap:ConsolidatedEntities

banf:TierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.0850.0850.0850.0850.0850.0850.078750.0725
Percentage of TierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.0850.0850.0850.0850.0850.0850.078750.0725
Percentage of TierOneRiskBasedCapitalWithCapitalConservationBufferToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AccountingStandardsUpdate201613


None
Period End2020-03-31
Value27
Percentage of AllowanceForDoubtfulAccountsReceivable100.0

us-gaap:AociTaxAttributableToParent

us-gaap:AociTaxAttributableToParent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value3278000.03363000.01187000.01248000.01249000.0137000.0-731000.0-1597000.0-1243000.0-1269000.0-795000.059000.0
Percentage of AociTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, banf:CollateralDependentLoans


None
Period End2020-06-302020-03-312019-12-31
Value212645
Percentage of AssetsFairValueDisclosure100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, banf:RepossessedAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.2640.1360.4650.2150.2010.183
Percentage of AssetsFairValueDisclosure1.20.51.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, us-gaap:EquitySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value9.3739.802109.2519.0997.521
Percentage of AssetsFairValueDisclosure43.736.622.20.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, us-gaap:RealEstateInvestment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.2151.9043.0241.981.7594.683
Percentage of AssetsFairValueDisclosure10.37.16.60.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value13145.4075.785.8563.291.4990.84
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.4550.3450.1280.1420.1380.1260.1140.204
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax3.32.52.42.52.43.87.624.3

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302017-12-31
Value0.0050.0270.0230.0360.0120.082
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.00.20.40.60.29.8

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.4970.2450.2820.3150.3350.3170.2770.554
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax3.61.75.25.45.79.618.566.0

us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value12134.9745.2865.3712.8471.108
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax93.095.692.091.591.786.573.9

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value689000.0787000.0766000.0903000.0952000.02752000.04369000.03139000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value614000.0610000.0606000.0533000.0572000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax89.177.579.159.013.1

us-gaap:MortgageBackedSecurities


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value31000.064000.070000.0565000.0576000.0573000.0586000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax3.98.47.859.320.913.118.7

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value66000.028000.038000.025000.026000.0152000.0160000.0329000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax9.63.65.02.82.75.53.710.5

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value9000.0118000.045000.036000.06000.067000.0112000.0121000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax1.315.05.94.00.62.42.63.9

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value592576485548418723773481465488464440440452458459400480535488519501500
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value1313131314
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis2.32.32.72.51.8

us-gaap:MortgageBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1616161715161618
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis2.72.93.53.23.72.22.14.0

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2122232326283089
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis3.63.94.74.36.33.93.919.2

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4124222322262741
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis7.04.24.64.25.53.73.59.0

us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value500499409463353651699314
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis84.586.784.484.584.590.190.567.8

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value4.9185.0355.8736.3596.3557.2657.5245.0476.1295.6166.2226.2575.8496.3185.836.6087.9867.7948.4831215212736
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value5.0745.1296.0089.2066.6067.4877.6855.2256.3065.8196.56.6166.1846.6666.1527.0888.618.3599.0751316222738
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value234254252289270273313368296268289261308308320178140175178266256350167256
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value246267257294276274311362291264287262308308319181143177180269259352168259
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value383940413739414649525558606266686972757780879790
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value383939383739404648525558606266687073757881889893
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value3142761862111034034116111416211311366756620518222427213216641208144
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value3152771862111034024106111316211211366756620618222427213216641209145
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value604589489553423723770475460484461441441453458462404483537493523504503536
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value512513414468358697312
Percentage of AvailableForSaleSecuritiesDebtSecurities84.887.084.684.784.890.567.7

us-gaap:FairValueInputsLevel2, us-gaap:MortgageBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value161617172.1642.4653.509
Percentage of AvailableForSaleSecuritiesDebtSecurities2.72.93.53.20.50.30.8

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value21222323262988
Percentage of AvailableForSaleSecuritiesDebtSecurities3.53.84.74.36.23.919.2

us-gaap:FairValueInputsLevel2, us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value41222223232742
Percentage of AvailableForSaleSecuritiesDebtSecurities6.83.94.64.35.53.69.2

us-gaap:FairValueInputsLevel3, us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value1212121213
Percentage of AvailableForSaleSecuritiesDebtSecurities2.12.22.62.31.7

us-gaap:FairValueInputsLevel3, us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-31
Value0.591.655
Percentage of AvailableForSaleSecuritiesDebtSecurities0.10.3

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value1212121213
Percentage of AvailableForSaleSecuritiesDebtSecurities2.12.22.62.31.7

us-gaap:MortgageBackedSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1616171715151517
Percentage of AvailableForSaleSecuritiesDebtSecurities2.72.93.53.23.62.22.13.9

us-gaap:USGovernmentAgenciesDebtSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2122232326272988
Percentage of AvailableForSaleSecuritiesDebtSecurities3.53.84.74.36.23.93.919.2

us-gaap:USStatesAndPoliticalSubdivisions


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4124222323272742
Percentage of AvailableForSaleSecuritiesDebtSecurities6.94.24.64.35.53.83.69.2

us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value512513414468358652697312
Percentage of AvailableForSaleSecuritiesDebtSecurities84.887.084.684.784.890.290.567.7

us-gaap:Capital us-gaap:ConsolidatedEntities

us-gaap:Capital

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value67656355
Percentage of Capital100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value960937910887939911886797
Percentage of Capital1415.71439.41426.81590.20.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value871853827812813788765714
Percentage of Capital1283.41310.71297.31456.90.00.00.00.0

us-gaap:CapitalRequiredForCapitalAdequacy us-gaap:ConsolidatedEntities

us-gaap:CapitalRequiredForCapitalAdequacy

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value40393633
Percentage of CapitalRequiredForCapitalAdequacy100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value518524505494449446435408
Percentage of CapitalRequiredForCapitalAdequacy1267.41340.11399.71483.80.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value476484468460448445434407
Percentage of CapitalRequiredForCapitalAdequacy1165.11237.71297.31379.90.00.00.00.0

us-gaap:CapitalRequiredToBeWellCapitalized us-gaap:ConsolidatedEntities

us-gaap:CapitalRequiredToBeWellCapitalized

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value51484541
Percentage of CapitalRequiredToBeWellCapitalized100.0100.0100.0100.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302018-12-312017-12-31
Value595605585575543509
Percentage of CapitalRequiredToBeWellCapitalized1165.11237.71297.31379.90.00.0

us-gaap:CapitalToRiskWeightedAssets us-gaap:ConsolidatedEntities

us-gaap:CapitalToRiskWeightedAssets

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value0.13280.13310.14150.1338
Percentage of CapitalToRiskWeightedAssets100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.14830.1430.14420.14340.16710.16320.16290.1562
Percentage of CapitalToRiskWeightedAssets111.7107.4101.9107.20.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.14620.1410.14140.14120.1450.14140.14090.1403
Percentage of CapitalToRiskWeightedAssets110.1105.999.9105.50.00.00.00.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1788154818681424171620381851170615971598
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndDueFromBanks

us-gaap:CashAndDueFromBanks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value20519222222518518522818518818121618618318018317422316920316317918720318023322519620419113021313914614316314615313393106114
Percentage of CashAndDueFromBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value1788154818681701170414771424179217571850
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommitmentsFairValueDisclosure

us-gaap:CommitmentsFairValueDisclosure


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
Value3140000.02656000.02832000.02694000.02277000.02219000.02158000.02006000.01992000.01791000.01839000.01855000.01780000.01749000.01718000.01824000.01735000.01681000.0
Percentage of CommitmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonEquityTierOneCapital us-gaap:ConsolidatedEntities

us-gaap:CommonEquityTierOneCapital

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value63616052
Percentage of CommonEquityTierOneCapital100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value853841830805858832808714
Percentage of CommonEquityTierOneCapital1341.51367.81379.01539.90.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value776767753736738715694643
Percentage of CommonEquityTierOneCapital1220.11246.51251.61409.20.00.00.00.0

us-gaap:CommonEquityTierOneCapitalRatio us-gaap:ConsolidatedEntities

us-gaap:CommonEquityTierOneCapitalRatio

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value0.12450.12580.13350.1254
Percentage of CommonEquityTierOneCapitalRatio100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.13180.12840.13150.13010.15270.1490.14870.14
Percentage of CommonEquityTierOneCapitalRatio105.9102.198.5103.70.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.13040.12670.12880.12810.13160.12840.12780.1262
Percentage of CommonEquityTierOneCapitalRatio104.7100.796.5102.20.00.00.00.0

us-gaap:CommonEquityTierOneCapitalRequiredForCapitalAdequacy us-gaap:ConsolidatedEntities

us-gaap:CommonEquityTierOneCapitalRequiredForCapitalAdequacy

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value23222018
Percentage of CommonEquityTierOneCapitalRequiredForCapitalAdequacy100.0100.0100.0100.0

srt:ParentCompany


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value291295284278252251244229
Percentage of CommonEquityTierOneCapitalRequiredForCapitalAdequacy1267.41340.11399.71483.70.00.00.00.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value268272263258252250244229
Percentage of CommonEquityTierOneCapitalRequiredForCapitalAdequacy1165.21237.71297.31379.80.00.00.00.0

us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized us-gaap:ConsolidatedEntities

us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value33312927
Percentage of CommonEquityTierOneCapitalRequiredToBeWellCapitalized100.0100.0100.0100.0

srt:Subsidiaries


None
Period End2020-06-302020-03-312019-12-312019-09-302018-12-312017-12-31
Value387393380374353331
Percentage of CommonEquityTierOneCapitalRequiredToBeWellCapitalized1165.11237.71297.31379.80.00.0

us-gaap:Deposits

us-gaap:Deposits


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value84867573748373306613670666056643669267136415630262356394624860245943601059735698580858835904574057215737541953095150517454405253509951525037488747014666450340824117
Percentage of Deposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Deposits us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


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
Value848675737483733066136706660566436692671364156302623563946248602459435973
Percentage of Deposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DepositsFairValueDisclosure

us-gaap:FairValueInputsLevel2


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
Value850375907497734267296816671367606792681164906374630664626313608559976028
Percentage of DepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:DividendsPayableCurrentAndNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value101010109.7889.7849.8269.8236.876.8546.6936.6866.0456.0285.9695.9225.595.5795.6155.6095.2815.2715.2655.2444.7654.7444.744
Percentage of DividendsPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations

us-gaap:FairValueInputsLevel2


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
Value302829292829293435353433353634343333
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue


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
Value1314121213132019192020201820212121202122212728303030325010101011111013131210
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FinancingReceivableAllowanceForCreditLosses


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value897054555251383838383737373737373635
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-31
Value3.8573.1630.599
Percentage of FinancingReceivableAllowanceForCreditLosses4.34.51.1

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-312019-12-31
Value2.5111.7882.821
Percentage of FinancingReceivableAllowanceForCreditLosses2.82.65.2

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-312019-12-31
Value443715
Percentage of FinancingReceivableAllowanceForCreditLosses49.753.228.3

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-31
Value4.7143.3853.2523.2343.0723.065
Percentage of FinancingReceivableAllowanceForCreditLosses5.34.86.05.95.86.0

banf:OtherLoans


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-31
Value2.5132.7512.6322.4492.4082.423
Percentage of FinancingReceivableAllowanceForCreditLosses2.83.94.94.44.64.7

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-312019-12-31
Value9.4835.9358.358
Percentage of FinancingReceivableAllowanceForCreditLosses10.68.515.4

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-312019-12-31
Value6.634.5445.625
Percentage of FinancingReceivableAllowanceForCreditLosses7.46.510.4

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-312019-12-31
Value1.7551.1362.214
Percentage of FinancingReceivableAllowanceForCreditLosses2.01.64.1

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-312019-12-31
Value2.2591.6181.933
Percentage of FinancingReceivableAllowanceForCreditLosses2.52.33.6

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-31
Value2.722.2922.767111110
Percentage of FinancingReceivableAllowanceForCreditLosses3.03.35.121.320.920.8

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-312019-12-31
Value8.5536.1928.692
Percentage of FinancingReceivableAllowanceForCreditLosses9.68.816.0

us-gaap:FinancingReceivableModificationsRecordedInvestment

us-gaap:FinancingReceivableModificationsRecordedInvestment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value3.2133.15818171614131314124.723.6033.5612.2031.7131.8421.9740.533151515161617201717181717171718181.0411.0590.344
Percentage of FinancingReceivableModificationsRecordedInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value749812
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value5155
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear6.96.8

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment

banf:PegasusBank, banf:GradeOne


None
Period End2020-06-302020-03-31
Value4245
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear5.75.6

banf:PegasusBank, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.3391.277
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.20.2

banf:PegasusBank, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value8.0148.887
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.11.1

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value4750
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear6.46.2

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.3790.055
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.0

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeOne


None
Period End2020-06-302020-03-31
Value3537
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear4.74.7

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.3531.715
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.20.2

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1010
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.51.3

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value7684
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear10.310.4

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-31
Value4.2365.659
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.60.7

banf:OtherLoans


None
Period End2020-06-302020-03-31
Value2020
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.72.5

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value159169
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear21.320.8

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value149173
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear20.021.4

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value4.6495.071
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.60.6

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.5130.522
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-31
Value1720
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.42.5

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value215227
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear28.828.0

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.1490.156
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value107110
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear14.313.6

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.1550.971
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value5257
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear7.07.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeFour


None
Period End2020-06-302020-03-31
Value1.1071.541
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value117133
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear15.716.5

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.382.668
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.20.3

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2935
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear4.04.3

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value4.0814.49
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.50.6

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.5680.581
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value0.0320.035
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.4810.487
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.720.727
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1315
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.81.9

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.3860.436
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2.9993.384
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.40.4

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeFive


None
Period End2020-03-31
Value0.012
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeFour


None
Period End2020-06-302020-03-31
Value2.0232.143
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.30.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeOne


None
Period End2020-06-302020-03-31
Value169176
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear22.621.7

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeThree


None
Period End2020-06-302020-03-31
Value6.5927.303
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.90.9

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value3741
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear5.05.1

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

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.2660.29
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value4853
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear6.56.6

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.3981.458
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.2

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2729
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear3.73.6

banf:ConsumerNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.070.086
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value3.6014.973
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.50.6

banf:ConsumerNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.1140.156
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.4510.444
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.1

banf:OtherLoans, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.120.071
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.0

banf:OtherLoans, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1716
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.42.0

banf:OtherLoans, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.2291.346
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.2

banf:OtherLoans, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2.1363.121
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.30.4

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value384414
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value2021
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear5.35.2

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment

banf:PegasusBank, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.60.27
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.20.1

banf:PegasusBank, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1516
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear4.04.1

banf:PegasusBank, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value4.6524.209
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1.21.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value2324
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear6.05.9

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.3810.399
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.1

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1516
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear4.14.0

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.5840.589
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.20.1

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value6.2626.67
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1.61.6

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value6671
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear17.417.3

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-31
Value9.52912
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2.53.0

banf:OtherLoans


None
Period End2020-06-302020-03-31
Value1922
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear5.25.5

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value102111
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear26.726.9

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value5861
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear15.214.9

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value3.0463.284
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.80.8

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.0370.04
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-31
Value7.4228.038
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1.91.9

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value7376
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear19.018.5

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value9198
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear23.723.8

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.0420.044
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1112
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear3.03.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.3920.398
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value4348
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear11.311.8

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.4950.497
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1312
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear3.62.9

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2.883.112
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.70.8

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.1660.172
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value0.0370.04
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeFour


None
Period End2020-06-30
Value0.034
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeOne


None
Period End2020-06-302020-03-31
Value6.7477.35
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1.81.8

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.2260.194
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.4150.494
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeFour


None
Period End2020-06-302020-03-31
Value1.1050.937
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.30.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeOne


None
Period End2020-06-302020-03-31
Value5659
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear14.714.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeThree


None
Period End2020-06-302020-03-31
Value2.342.33
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.60.6

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1314
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear3.43.4

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

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.150.111
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value5660
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear14.814.6

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.5174.61
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.41.1

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value8.1236.101
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2.11.5

banf:ConsumerNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0490.062
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value8.53111
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2.22.7

banf:ConsumerNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.1270.176
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.8221.026
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.20.2

banf:OtherLoans, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1821
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear4.85.2

banf:OtherLoans, banf:GradeThree


None
Period End2020-06-30
Value0.071
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0

banf:OtherLoans, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1.1741.183
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.30.3

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear


None
Period End2020-06-302020-03-31
Value2076726
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value7250
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3.57.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment

banf:PegasusBank, banf:GradeOne


None
Period End2020-06-302020-03-31
Value5535
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear2.74.8

banf:PegasusBank, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1715
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.82.1

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value3520
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.72.9

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2713
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.31.9

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.7480.54
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.1

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value7.7416.615
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.40.9

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value334273
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear16.137.7

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-31
Value10348
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear5.06.7

banf:OtherLoans


None
Period End2020-06-302020-03-31
Value8406.05
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear40.50.8

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value214108
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear10.314.9

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value10933
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear5.34.7

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value7954
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3.87.5

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value11448
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear5.56.6

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-31
Value157.608
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.71.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value15573
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear7.510.2

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value18895
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear9.113.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.1261.698
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.10.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2511
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.21.5

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeFour


None
Period End2020-06-30
Value0.047
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value9325
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear4.53.5

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.1420.056
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value168.43
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.81.2

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeFive


None
Period End2020-06-302020-03-31
Value0.0150.016
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value6642
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3.25.8

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1212
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.61.7

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value9438
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear4.65.3

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.4160.649
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value189.101
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.91.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeFive


None
Period End2020-03-31
Value0.097
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0520.053
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeOne


None
Period End2020-06-302020-03-31
Value136.151
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.60.8

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.180.025
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2.0641.282
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.10.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0880.126
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeOne


None
Period End2020-06-302020-03-31
Value13564
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear6.58.9

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeThree


None
Period End2020-06-302020-03-31
Value3.7962.333
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.20.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value166.678
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.80.9

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

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value2626
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.33.7

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value245200
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear11.827.6

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value9.538.868
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.51.2

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value5238
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear2.55.2

banf:ConsumerNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0170.007
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value9745
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear4.76.3

banf:ConsumerNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.2070.099
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value5.8232.927
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.30.4

banf:OtherLoans, banf:GradeOne


None
Period End2020-06-302020-03-31
Value8406.05
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear40.50.8

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value14171705
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value108113
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear7.66.7

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment

banf:PegasusBank, banf:GradeOne


None
Period End2020-06-302020-03-31
Value7379
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear5.24.7

banf:PegasusBank, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value3433
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.52.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value6872
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear4.84.2

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeOne


None
Period End2020-06-302020-03-31
Value3235
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.32.1

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.6250.834
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value3435
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.52.1

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value268375
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear19.022.0

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-31
Value144172
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear10.210.1

banf:OtherLoans


None
Period End2020-06-302020-03-31
Value3129
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.21.7

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value250247
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear17.714.5

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value146164
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear10.49.7

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value87113
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear6.26.6

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value85144
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear6.18.5

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-31
Value2023
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear1.41.4

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value205249
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear14.514.6

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0940.095
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value178173
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear12.610.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value3.9294.03
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.30.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value6869
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear4.84.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0780.37
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value115133
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear8.17.8

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.1070.04
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value3131
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.21.8

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.070.075
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value76101
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear5.46.0

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value8.2499.018
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.60.5

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeFour


None
Period End2020-03-31
Value0.133
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value72120
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear5.17.1

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.442.597
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.10.2

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1121
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.81.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeFour


None
Period End2020-03-31
Value0.046
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1720
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear1.21.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.890.85
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.10.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2.3812.441
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.20.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.8150.596
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.10.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeOne


None
Period End2020-06-302020-03-31
Value176217
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear12.412.7

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeThree


None
Period End2020-06-302020-03-31
Value2.1952.468
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.20.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2629
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear1.91.7

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

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeFive


None
Period End2020-06-302020-03-31
Value0.0510.083
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.9891.221
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.10.1

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value218306
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear15.418.0

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value2.6345.72
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.20.3

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value4661
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear3.33.6

banf:ConsumerNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.2240.267
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value134160
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear9.59.4

banf:ConsumerNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.8660.915
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.10.1

banf:ConsumerNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value8.91910
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.60.6

banf:OtherLoans, banf:GradeOne


None
Period End2020-06-302020-03-31
Value3129
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.21.7

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value547597
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value5257
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear9.69.7

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment

banf:PegasusBank, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2930
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear5.45.0

banf:PegasusBank, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2227
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.24.6

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value2527
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.74.7

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.6390.66
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.10.1

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1618
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear3.03.1

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.1091.132
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.20.2

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value7.5827.565
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear1.41.3

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value127137
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear23.323.1

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-31
Value2429
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.55.0

banf:OtherLoans


None
Period End2020-06-302020-03-31
Value2425
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.54.3

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value11497
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear20.916.4

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value6874
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear12.512.4

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value6.41237
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear1.26.2

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.0220.023
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-31
Value1112
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear2.22.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value9096
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear16.616.1

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value9072
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear16.612.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.5430.782
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2324
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.24.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value5660
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear10.210.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.5831.052
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.30.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1012
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear2.02.0

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0240.026
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value5.53536
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear1.06.1

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.8530.869
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.20.1

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value0.0220.023
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0510.045
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeOne


None
Period End2020-06-302020-03-31
Value9.6610
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear1.81.8

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.1610.288
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1.9971.918
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.40.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.3010.257
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.10.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeOne


None
Period End2020-06-302020-03-31
Value7679
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear13.913.4

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.7371.796
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.30.3

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1214
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear2.32.4

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

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value2.3612.529
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.40.4

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value114122
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear20.820.5

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.4731.833
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.30.3

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value9.95110
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear1.81.8

banf:ConsumerNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0530.07
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2327
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.24.6

banf:ConsumerNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1.441.963
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.30.3

banf:OtherLoans, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.0620.012
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

banf:OtherLoans, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2122
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.03.8

banf:OtherLoans, banf:GradeThree


None
Period End2020-06-30
Value0.003
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.0

banf:OtherLoans, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value3.0113.08
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.50.5

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear


None
Period End2020-06-302020-03-31
Value764839
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear100.0100.0

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-31
Value4854
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear6.36.5

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:BusinessAcquisition, us-gaap:InternalCreditAssessment

banf:PegasusBank, banf:GradeOne


None
Period End2020-06-302020-03-31
Value4143
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear5.45.2

banf:PegasusBank, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value7.21311
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.91.3

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value3538
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear4.74.6

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.7580.777
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2224
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear2.93.0

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeThree


None
Period End2020-06-302020-03-31
Value5.3135.337
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.70.6

banf:Farmland, banf:RealEstatePortfolioSegment, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value7.3417.464
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear1.00.9

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value183191
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear24.022.8

banf:ConsumerNonRealEstate


None
Period End2020-06-302020-03-31
Value6880
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear8.99.6

banf:OtherLoans


None
Period End2020-06-302020-03-31
Value2829
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear3.73.6

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value130159
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear17.119.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value102107
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear13.412.8

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value3030
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear4.03.7

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.581.825
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-31
Value1517
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear2.12.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value120127
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear15.815.2

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

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value105133
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear13.815.9

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value7.1187.213
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.90.9

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1818
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear2.42.2

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.8790.849
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeOne


None
Period End2020-06-302020-03-31
Value8892
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear11.511.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.5990.641
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1213
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear1.71.6

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.010.039
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2828
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear3.73.4

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.1840.195
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1.6981.732
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.20.2

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeFour


None
Period End2020-03-31
Value0.287
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.0

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeOne


None
Period End2020-06-302020-03-31
Value0.0690.385
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.0

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.3970.203
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.0

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value0.1140.95
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeOne


None
Period End2020-06-302020-03-31
Value1314
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear1.71.7

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.9961.002
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value1.5451.64
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.20.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.8580.707
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeOne


None
Period End2020-06-302020-03-31
Value94100
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear12.411.9

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeThree


None
Period End2020-06-302020-03-31
Value1.5971.621
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.20.2

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value2325
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear3.13.0

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

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.8360.903
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value148154
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear19.418.4

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value2.4942.836
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.30.3

banf:CommercialAndAgriculturalNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value3132
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear4.13.9

banf:ConsumerNonRealEstate, banf:GradeFour


None
Period End2020-06-302020-03-31
Value0.2110.254
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.0

banf:ConsumerNonRealEstate, banf:GradeOne


None
Period End2020-06-302020-03-31
Value6274
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear8.28.8

banf:ConsumerNonRealEstate, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.5740.665
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.1

banf:ConsumerNonRealEstate, banf:GradeTwo


None
Period End2020-06-302020-03-31
Value5.0495.9
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.70.7

banf:OtherLoans, banf:GradeFour


None
Period End2020-06-30
Value0.026
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.0

banf:OtherLoans, banf:GradeOne


None
Period End2020-06-302020-03-31
Value2829
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear3.73.5

banf:OtherLoans, banf:GradeThree


None
Period End2020-06-302020-03-31
Value0.0140.024
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.0

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value5.3821011112.6632.171.9164.0732.9163.92.8932.1222.2172.0241.9621.9062.6951.0991.8412.0611.3111.4981.1352.0041.7890.911.1791.2660.850.5420.5370.7311.4031.150.7981.4131.166
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value0.7631.406
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing14.214.0

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value2.1541.451
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing40.014.4

banf:ConsumerNonRealEstate


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
Value0.3130.5450.4910.3760.2320.1730.3250.3450.3310.440.1940.2560.3880.3840.2740.270.4180.278
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing5.85.44.13.48.78.017.08.511.411.36.712.117.519.014.014.215.515.1

banf:OtherLoans


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-03-312017-06-302017-03-312016-12-312016-06-302015-12-31
Value0.0674.6174.4264.340.1830.1280.1410.1010.0510.0450.1190.132
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing1.245.937.438.76.93.13.64.62.52.34.47.2

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value0.0770.192
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing1.41.9

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-03-31
Value0.039
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing0.4

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-03-312016-12-31
Value0.0630.130.5490.4420.150.2470.6120.8451.1291.5620.9730.2520.369
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing1.21.34.63.95.611.431.920.738.740.133.612.518.8

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value1.9451.685
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing36.116.7

us-gaap:FinancingReceivableRecordedInvestmentCurrent

us-gaap:FinancingReceivableRecordedInvestmentCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value6616593956125565505949994937490649754947469346104542435243654269429642404207393538233831383937373637351533603335322431993220309530433029297329602841
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:FinancingReceivableRecordedInvestmentCurrent us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value484474429391
Percentage of FinancingReceivableRecordedInvestmentCurrent7.38.07.77.0

us-gaap:FinancingReceivableRecordedInvestmentCurrent us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value250250
Percentage of FinancingReceivableRecordedInvestmentCurrent3.84.2

us-gaap:FinancingReceivableRecordedInvestmentCurrent us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value14411700
Percentage of FinancingReceivableRecordedInvestmentCurrent21.828.6

banf:ConsumerNonRealEstate


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
Value357352358355342324323317298282285287281273280278273265
Percentage of FinancingReceivableRecordedInvestmentCurrent5.45.96.46.46.86.56.66.56.05.76.16.26.26.36.46.56.46.3

banf:OtherLoans


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
Value981147147149142140141142136135139136134131127138148156
Percentage of FinancingReceivableRecordedInvestmentCurrent14.82.52.62.72.82.82.92.92.72.73.03.03.03.02.93.23.53.7

us-gaap:FinancingReceivableRecordedInvestmentCurrent us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value989910
Percentage of FinancingReceivableRecordedInvestmentCurrent15.015.3

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value648629
Percentage of FinancingReceivableRecordedInvestmentCurrent9.810.6

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value224252
Percentage of FinancingReceivableRecordedInvestmentCurrent3.44.2

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value206200
Percentage of FinancingReceivableRecordedInvestmentCurrent3.13.4

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-03-312016-12-31
Value179182912882849832822810788771781732743
Percentage of FinancingReceivableRecordedInvestmentCurrent2.73.116.315.916.816.716.716.515.815.616.716.817.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value851838
Percentage of FinancingReceivableRecordedInvestmentCurrent12.914.1

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value49451719172122263031312719233131303130303216161717171415182020222020212422
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:FinancingReceivableRecordedInvestmentNonaccrualStatus us-gaap:BusinessAcquisition

banf:PegasusBank


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value0.60.270.8510.879
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus1.20.64.74.4

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

banf:Farmland, banf:RealEstatePortfolioSegment


None
Period End2020-06-302020-03-31
Value3.1182.687
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus6.35.9

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus us-gaap:FinancingReceivablePortfolioSegment

banf:CommercialAndAgriculturalNonRealEstate


None
Period End2020-06-302020-03-31
Value3232
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus65.372.0

banf:ConsumerNonRealEstate


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
Value0.2470.1740.2640.4120.3940.4220.4370.4160.3620.310.250.2730.2710.2860.2650.4720.2910.312
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus0.50.41.52.12.22.01.91.51.21.00.81.01.41.20.81.51.01.0

banf:OtherLoans


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
Value5.8411.5221.0830.3680.2720.3930.490.4270.5252.4675.5969.3844.9285.0338.379.0088.919.381
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus11.83.46.01.81.51.82.21.61.77.717.533.925.121.226.329.029.631.2

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateNonOwnerOccupied


None
Period End2020-06-302020-03-31
Value0.4630.465
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus0.91.0

banf:RealEstatePortfolioSegment, banf:CommercialRealEstateOwnerOccupied


None
Period End2020-06-302020-03-31
Value2.0942.503
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus4.25.5

banf:RealEstatePortfolioSegment, banf:ConstructionAndDevelopmentLessThanSixtyMonths


None
Period End2020-06-302020-03-31
Value0.1190.155
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus0.20.3

banf:RealEstatePortfolioSegment, banf:ConstructionResidentialRealEstateLessThanSixtyMonths


None
Period End2020-03-31
Value0.38
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus0.8

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateAllOther


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-03-312016-12-31
Value0.7920.8383.066.1425.3275.7295.4884.9115.1213.9113.984.7265.089
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus1.61.917.030.729.626.524.318.317.012.312.519.916.0

banf:RealEstatePortfolioSegment, banf:ResidentialRealEstateFirstLien


None
Period End2020-06-302020-03-31
Value3.9043.657
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus7.98.1

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRecordedInvestmentPastDue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value585049403443384032362835363835373034