MSBI


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted
us-gaap:ProductOrService
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax
us-gaap:ProductOrService, us-gaap:InitialApplicationPeriodCumulativeEffectTransition

us-gaap:InterestIncomeOperating

us-gaap:InterestExpense

us-gaap:IncomeTaxExpenseBenefit
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxesPaidNet

us-gaap:ProfitLoss

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:Assets
us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

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

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

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

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

msbi:AmortizationOfOperatingLeaseRightOfUseAsset

msbi:CommissionsAndFeesIncomeFromDepositorAccounts

msbi:DividendsCommonStockAndShareBasedCompensation
us-gaap:StatementEquityComponents

msbi:EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

msbi:EquitySecuritiesFvNiSales

msbi:EquitySecuritiesFvniPurchases
us-gaap:FairValueByMeasurementFrequency
msbi:FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasis
us-gaap:FairValueByMeasurementFrequency
msbi:FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasisImpairedLoans
us-gaap:FairValueByMeasurementFrequency
msbi:FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasisOtherRealEstateOwned

msbi:FeesAndCommissionsFromDebitCards

msbi:FeesAndCommissionsMortgageBankingAndServicingAndOtherCommercial

msbi:FeesAndCommissionsMortgageBankingAndServicingAndOtherResidential

msbi:GainLossOnSaleOfMortgageServiceRightsHeldForSale
us-gaap:FairValueByMeasurementFrequency

msbi:GainsLossesOnSalesOfOtherRealEstateExcludingWriteDowns

msbi:IncreaseDecreaseOnOperatingLeaseLiabilities

msbi:InterestAndFeeIncomeLoansAndLeasesTaxExempt

msbi:InterestAndFeeIncomeLoansAndLeasesTaxable

msbi:InterestExpenseFederalHomeLoanBankAdvancesAndOtherBorrowings

msbi:LoansAndLeasesReceivableImpairedTroubledDebtInterestIncomeRecognized

msbi:NonMarketableSecuritiesEquitySecurities

msbi:NoninterestIncomeOutOfScopeOfTopic606
us-gaap:InitialApplicationPeriodCumulativeEffectTransition

msbi:OtherComprehensiveIncomeLossProvisionForCreditLoss

msbi:PaymentsToAcquireNonmarketableEquitySecurities

msbi:PreferredStockDividendAndAmortizationOfPremium

msbi:PreferredStockPremiumAmortization

msbi:ProvisionForCreditLosses

msbi:ShortTermDebtWeightedAverageInterestRateDuringPeriod

msbi:UndistributedEarningsToCommonShareholders

msbi:WealthManagementRevenue

msbi:WriteDownOfOtherRealEstateOwned

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfMortgageServicingRightsMSRs
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AvailableForSaleDebtSecuritiesGrossUnrealizedGain
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesGrossUnrealizedLoss
us-gaap:FinancialInstrument

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:Communication

us-gaap:DebtAndEquitySecuritiesGainLoss
us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
us-gaap:VariableRate
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff

us-gaap:Depreciation

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DividendsCommonStock

us-gaap:DividendsPreferredStockCash

us-gaap:DividendsShareBasedCompensation

us-gaap:EquitySecuritiesFvNiUnrealizedGain
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

us-gaap:FairValueOptionChangesInFairValueGainLoss1
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FinancingReceivableModificationsNumberOfContracts2
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges
us-gaap:FairValueByMeasurementFrequency

us-gaap:GainLossOnSalesOfLoansNet
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:AwardType

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldForSale

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestExpenseSubordinatedNotesAndDebentures

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseNet
us-gaap:StatementBusinessSegments

us-gaap:InterestIncomeFederalFundsSold

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:InterestPaidNet

us-gaap:LaborAndRelatedExpense

us-gaap:LifeInsuranceCorporateOrBankOwnedChangeInValue

us-gaap:LoanPortfolioExpense

us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans

us-gaap:LoansAndLeasesReceivableRelatedPartiesAdditions

us-gaap:LoansAndLeasesReceivableRelatedPartiesProceeds

us-gaap:LossContingencyLossInPeriod

us-gaap:MarketingExpense

us-gaap:MortgageServicingRightsMSRImpairmentRecovery
us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancialInstrument

us-gaap:NoninterestExpense
us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncome
us-gaap:InitialApplicationPeriodCumulativeEffectTransition
us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncomeOther

us-gaap:OccupancyNet

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherNoninterestExpense

us-gaap:OtherRevenueExpenseFromRealEstateOperations

us-gaap:PaymentsForOriginationOfMortgageLoansHeldForSale

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromFederalHomeLoanBankBorrowings

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity

us-gaap:ProceedsFromSaleOfForeclosedAssets

us-gaap:ProceedsFromSaleOfMortgageLoansHeldForSale
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ProfessionalFees

us-gaap:ProvisionForLoanAndLeaseLosses
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:StatementBusinessSegments
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:FinancialInstrument
us-gaap:ServicingAssetAtAmortizedValueAdditions
us-gaap:FinancialInstrument
us-gaap:ServicingAssetAtAmortizedValueAmortization1

us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate

us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed

us-gaap:ShorttermDebtAverageOutstandingAmount

us-gaap:ShorttermDebtMaximumMonthendOutstandingAmount

us-gaap:StockIssuedDuringPeriodValueEmployeeBenefitPlan
us-gaap:StatementEquityComponents

us-gaap:StockOptionPlanExpense

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:UndistributedEarningsDiluted

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersBasic

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted

us-gaap:ValuationAllowanceForImpairmentOfRecognizedServicingAssetsAggregateWriteDowns

us-gaap:ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries

msbi:CollateralDependentLoans
us-gaap:Collateral, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensation, us-gaap:StatementScenario, us-gaap:TitleOfIndividual
msbi:DeferredCompensationArrangementSupplementalRetirementPaymentsPercentage

msbi:FinancingReceivableModificationsRecordedInvestmentAccruing
us-gaap:Collateral, us-gaap:CreditLossStatus, us-gaap:FinancingReceivablePortfolioSegment

msbi:FinancingReceivableModificationsRecordedInvestmentNonaccrual
us-gaap:Collateral, us-gaap:CreditLossStatus, us-gaap:FinancingReceivablePortfolioSegment

msbi:FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:Range, us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
msbi:ImpairedFinancingReceivableMeasurementInput

msbi:LiabilityForUnresolvedRepurchaseDemands
us-gaap:LossContingenciesByNatureOfContingency
msbi:LoanCommitments
us-gaap:FinancialInstrument
msbi:MortgageLoansServicedForOthers

msbi:NonMarketableEquitySecurities
us-gaap:FairValueByFairValueHierarchyLevel
msbi:NonMarketableEquitySecuritiesFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:StatementScenario
msbi:NumberOfBankingFacilitiesToBeClosedToHomestar
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
msbi:RealEstateOwnedOtherFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

msbi:ServicingAssetAtFairValueAmountNetOfValuationAllowance

msbi:ServicingRightsHeldForSale
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancialInstrument

us-gaap:AdvancesFromFederalHomeLoanBanks
us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsHeldForSaleLongLivedFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndDueFromBanks

us-gaap:CashSurrenderValueOfLifeInsurance

us-gaap:CollateralizedAgreements
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:Range, us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType
us-gaap:DebtSecuritiesAvailableForSaleMeasurementInput
us-gaap:Range, us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredDiscountsFinanceChargesAndInterestIncludedInReceivables

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DepositsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:DerivativeAssetNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:DerivativeAssets
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position
us-gaap:DerivativeAverageVariableInterestRate

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FairValueOptionLoansHeldAsAssetsAggregateDifference
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FederalFundsSold
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1
us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType
us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresInterestRateAtPeriodEnd
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FederalHomeLoanBankBorrowingsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancialLiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:FinancingReceivableModificationsRecordedInvestment
us-gaap:Collateral, us-gaap:CreditLossStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableNonaccrualNoAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
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:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
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:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
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:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
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:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
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:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
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:FinancingReceivableRecordedInvestmentCurrent
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

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

us-gaap:FinancingReceivableRecordedInvestmentPastDue
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRevolving
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
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:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:ValuationTechnique
us-gaap:ImpairedFinancingReceivableRecordedInvestment
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:IncomeTaxReceivable

us-gaap:InterestBearingDepositLiabilities

us-gaap:InterestBearingDomesticDepositChecking

us-gaap:InterestBearingDomesticDepositMoneyMarket

us-gaap:InterestBearingDomesticDepositSavings

us-gaap:InterestBearingDomesticDepositTimeDeposits

us-gaap:InterestPayableCurrentAndNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByMeasurementBasis

us-gaap:InterestReceivable
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByMeasurementBasis

us-gaap:JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByMeasurementBasis

us-gaap:LineOfCredit
us-gaap:ShortTermDebtType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument

us-gaap:LoansAndLeasesReceivableAllowance
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:LoansAndLeasesReceivableDeferredIncome

us-gaap:LoansAndLeasesReceivableGrossCarryingAmount

us-gaap:LoansAndLeasesReceivableNetReportedAmount
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:LoansAndLeasesReceivableRelatedParties

us-gaap:LoansHeldForSaleFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral
us-gaap:LoansPledgedAsCollateral
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansReceivableFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:LoansReceivableHeldForSaleAmount
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroup
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:MarketableSecurities

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:OffBalanceSheetCreditLossLiability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherAssets

us-gaap:OtherLiabilities

us-gaap:OtherRealEstate

us-gaap:ServicingAsset
us-gaap:FinancialInstrument

us-gaap:ServicingAssetAtAmortizedValue

us-gaap:ServicingAssetAtAmortizedValueFairValue
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:ValuationTechnique
us-gaap:ServicingAssetAtFairValueAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:Range, us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:ServicingAssetMeasurementInput

us-gaap:ShortTermBorrowings

us-gaap:ShortTermDebtWeightedAverageInterestRate
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ShorttermDebtFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:SubordinatedDebt
us-gaap:LongtermDebtType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:TradingLiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:CommonStockValue ▇▇█████▇▇▇▄▄▄▁▁▁▁229000.0234000.0244000.0243000.0239000.0238000.0238000.0237000.0237000.0236000.0191000.0191000.0191000.0158000.0155000.0154000.0154000.0NA118000.0NANANA
us-gaap:CommonStockSharesIssued ▇▇████▇▇▇▇▄▄▄▁▁▁▁22.93729623.38149624.42034524.33874823.89703823.82743823.75179823.69463723.66459623.6124319.12204919.09315319.08740915.78065115.48349915.40442315.402946NA11.797404NANANA
us-gaap:CommonStockSharesOutstanding ██████████▆▆▆▆▅▁▅22.93729623.38149624.42034524.33874823.89703823.82743823.75179823.69463723.66459623.6124319.12204919.09315319.08740915.78065115.4834990.015.402946NA11.797404NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█23.33996424.538002NA24.68452924.30321124.204661NA24.32574324.26811121.351511NA19.70421717.32008916.351637NA15.85827313.63507412.229293NA12.13052912.098476NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█23.3388924.433975NA24.48842224.08177723.998119NA23.85580523.81543620.901738NA19.26540916.80372415.736412NA15.57870313.35828911.957381NA11.91141411.899919NA
us-gaap:EarningsPerShareBasic ▆▁▆▆▇▆▇▄▆▁▁▁▃▆█▆▆▅▇▃▆▆0.530.060.520.510.670.580.680.350.530.080.10.10.210.540.740.510.510.430.640.290.560.55
us-gaap:EarningsPerShareDiluted ▆▁▆▆▇▆▇▄▆▁▁▁▂▆█▆▆▅▇▃▆▆0.530.060.510.510.670.570.670.350.520.080.10.10.20.520.720.510.50.420.630.280.550.54
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService msbi:AssetManagementNA4.209NA4.3974.0823.617NA4.3274.3223.119NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService msbi:InterchangeRevenuesNA2.833NA3.2493.012.68NA2.7592.9292.09NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService msbi:NonsufficientFundFeesNA1.866NA2.0961.8011.754NA2.0981.9911.45NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService msbi:OtherDepositAccountNA0.79NA0.9120.8380.766NA0.7060.7020.517NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService msbi:OtherWealthManagementRevenueNA0.544NA0.6960.6510.588NA0.3390.2130.231NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService us-gaap:CreditCardMerchantDiscountNA0.351NA0.3670.3890.375NANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceNA0.529NA0.5480.5390.529NANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService us-gaap:InvestmentPerformanceNA0.395NA0.3570.2320.219NANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService us-gaap:ServiceOtherNA0.938NA0.9080.7880.818NANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition msbi:AssetManagement,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6064.273NANANA4.0823.617NA4.3274.3223.119NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition msbi:InterchangeRevenues,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6063.013NANANA3.012.68NA2.7592.9292.045NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition msbi:NonsufficientFundFees,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.961NANANA1.8011.754NA2.0981.9911.45NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition msbi:OtherDepositAccount,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.745NANANA0.8380.766NA0.7060.7020.517NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition msbi:OtherWealthManagementRevenue,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.613NANANA0.6510.588NA0.3390.2130.231NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition us-gaap:CreditCardMerchantDiscount,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.304NANANA0.3890.375NA0.4480.460.338NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition us-gaap:InvestmentAdvisoryManagementAndAdministrativeService,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.495NANANA0.5390.529NA0.5310.4950.465NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition us-gaap:InvestmentPerformance,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.317NANANA0.2320.219NA0.270.2860.264NANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:InitialApplicationPeriodCumulativeEffectTransition us-gaap:ServiceOther,us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.929NANANA0.7880.818NA0.2780.6871.07NANANANANANANANANANANANA
us-gaap:InterestIncomeOperating ▇▇██▇▇▇▇▇▅▄▄▂▂▁▂▂▁▂▁▂▁60.54861.31464.44465.00660.63659.43261.59256.98758.28346.50543.543.24634.52831.83929.98131.18632.11527.96730.328.94931.24227.305
us-gaap:InterestExpense ▆▇██▇▇▇▆▅▄▄▃▂▂▂▂▂▂▂▁▁▁11.55914.66315.75715.55614.55913.83113.05711.9069.9978.327.4646.4815.1284.3784.0223.9214.1263.9263.8483.5122.9252.604
us-gaap:IncomeTaxExpenseBenefit ▄▁▄▄▅▅▅▃▃▂▆▁▂▃█▄▄▃▃▂▃▄3.4240.4563.2794.0155.0394.3544.5272.4363.0451.3765.7750.281.3772.9838.3274.1023.6832.7772.8111.9282.7623.59
us-gaap:IncomeTaxesPaidNet NA0.898NANANA0.337NANANA0.029NANANA0.005NANANA0.157NANANANA
us-gaap:ProfitLoss NA1.54912.79212.65516.35513.98216.3368.49712.7821.8061.9912.0363.5398.4911.588.0456.795.1187.6963.4516.676.59
us-gaap:ComprehensiveIncomeNetOfTax █▁14.8472.561NA13.64120.04119.57NA6.08211.195-0.672NA2.1334.8158.903NA7.9068.127.233NA4.74.637NA
us-gaap:OtherComprehensiveIncomeLossNetOfTax NA1.012NA0.9863.6865.588NA-2.415-1.587-2.478NANANA0.413NANANA2.114NANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncomeNA1.012NA0.9863.6865.588NA-2.415-1.587-2.478NANANA0.413NANANA2.114NANANANA
us-gaap:NetIncomeLoss █▁12.5691.549NA12.65516.35513.982NA8.49712.7821.806NA2.0363.5398.4911.5838.0516.7895.1197.6953.4456.6536.531
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic █▁12.4391.484NA12.57716.18713.836NA8.41312.671.739NA2.0093.528.49NA8.0136.7535.119NA3.4236.609NA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted █▁12.4391.484NA12.57816.18813.836NA8.41412.6711.739NA1.993.58.439NA8.0136.7545.088NA3.4236.61NA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:Assets █▇▇▇▆▆▆▆▆▆▄▄▄▂▂▂▁▁▁▁▁6644.4986208.236087.0176113.9045546.0555641.785637.6735724.6125730.65723.3724412.7014347.7614491.6423373.5773233.7233247.7273021.7842898.082884.8242832.3082753.581NA
us-gaap:Liabilities █▇▇▇▆▆▆▆▆▆▄▄▄▂▁▁▁6010.9095577.075425.1065458.3824906.1675017.6125029.1485130.4665138.0655137.9873963.1563897.0724039.693039.2442911.9152925.9372705.469NA2651.768NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▆▆▆▆▆▆▄▄▄▂▁▁▁6644.4986208.236087.0176113.9045546.0555641.785637.6735724.6125730.65723.3724412.7014347.7614491.6423373.5773233.7233247.7273021.784NA2884.824NANANA
us-gaap:StockholdersEquity █▇███▇▇▇▇▇▅▅▅▃▂▂▂▁▁633.589631.16661.911655.522639.888624.168608.525594.146592.535585.385449.545450.689451.952334.333321.77321.749316.268238.386232.88NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue █▇▆▆▃▄▃▃▄▅▃▂▅▃▂▃▁▂▃▂▂519.868449.396394.505409.346245.415276.48213.7242.433276.331331.183215.202183.572334.356218.096190.716228.03123.366162.416212.475206.664172.23NA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:PropertyPlantAndEquipmentGross █████▇▇▇▇▇▁128.924128.809128.265129.645129.207127.394126.23124.974126.745126.159105.789NANANA92.499NANANA95.667NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▆▅▄▃▂▁▃▂▁39.87838.69137.2135.74934.38332.8831.3929.91231.96230.82729.627NANANA25.807NANANA22.534NANANA
us-gaap:PropertyPlantAndEquipmentNet ▆▇▇███████▃▄▃▁▁▂▂89.04690.11891.05593.89694.82494.51494.8495.06294.78395.33276.16280.94176.59866.91466.69270.72772.147NA73.133NANANA
us-gaap:Goodwill █████████▇▄▄▄▁▁▁▁172.796172.796171.758171.074164.673164.673164.673164.044164.044155.67498.62497.35196.9450.80748.83646.51946.519NA46.519NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▅▆▆▆▆▆▆▇▇█▃▃▃▂▁▁▁31.49533.12434.88636.6933.89335.56637.37639.22841.08146.47316.93217.96618.4598.6337.1875.3915.905NA7.004NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▅▆▆▆▆▆▆▇▇█▃▃▃▂▁▁▁31.49533.12434.88636.6933.89335.56637.37639.22841.08146.47316.93217.96618.4598.6337.1875.3915.905NA7.004NANANA
us-gaap:EquitySecuritiesFvNi █▄▄▄▁▁▁9003000.05640000.05621000.05612000.03369000.03413000.03334000.0NANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel,us-gaap:FairValueByMeasurementFrequency,us-gaap:FinancialInstrument us-gaap:FairValueInputsLevel2,us-gaap:FairValueMeasurementsRecurring,msbi:EquitySecurity█▄▄▄▁▁▁9003000.05640000.05621000.05612000.03369000.03413000.03334000.0NANANA2830000.0NANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency,us-gaap:FinancialInstrument us-gaap:FairValueMeasurementsRecurring,msbi:EquitySecurity█▄▄▄▁▁▁9003000.05640000.05621000.05612000.03369000.03413000.03334000.0NANANA2830000.0NANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:DeferredIncomeTaxLiabilitiesNet █▁█11.3419.91111.278NANANANANANANANANANA8.868.598NANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:StockholdersEquity █▇███▇▇▇▇▇▅▅▅▃▂▂▂▁▁633.589631.16661.911655.522639.888624.168608.525594.146592.535585.385449.545450.689451.952334.333321.77321.749316.268238.386232.88NANANA
us-gaap:CommonStockValue ▇▇█████▇▇▇▄▄▄▁▁▁▁229000.0234000.0244000.0243000.0239000.0238000.0238000.0237000.0237000.0236000.0191000.0191000.0191000.0158000.0155000.0154000.0154000.0NA118000.0NANANA
us-gaap:AdditionalPaidInCapital ▇█████████▄▄▄▁▁▁▁462.577468.75488.305488.025477.412475.811473.833473.057472.207470.937330.148329.934329.347216.498209.712208.452208.092NA135.822NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▇▇█▇▇▆▅▄▃▂▃▃▃▃▂▂▁160.051153.722165.92159.102152.387141.906133.781122.745119.522112.009114.478116.373118.201117.874112.513103.81398.547NA90.911NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▇▇▇▆▅▂▁▂▃▄▄▄▃▃▇▇10.7328.4547.4428.1527.1663.48-2.108-4.722-2.307-0.721.7581.1761.079-0.197-0.619.339.475NA6.029NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁616000.0602000.0NA452000.0493000.0846000.0NA273000.0398000.0124000.0NANANA132000.0NANANA106000.0NANANANA
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▁616000.0602000.0NA452000.0493000.0846000.0NA273000.0398000.0124000.0NANANA132000.0NANANA106000.0NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities NA15.551NANANA29.998NANANA47.875NANANA47.614NANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities NA-94.403NANANA55.465NANANA31.744NANANA-147.948NANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities NA133.743NANANA-22.683NANANA36.362NANANA127.714NANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect NA54.891NANANA62.78NANANA115.981NANANA27.38NANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities NA15.551NANANA29.998NANANA47.875NANANA47.614NANANANANANANANA
us-gaap:NetIncomeLoss █▁12.5691.549NA12.65516.35513.982NA8.49712.7821.806NA2.0363.5398.4911.5838.0516.7895.1197.6953.4456.6536.531
us-gaap:ProfitLoss NA1.54912.79212.65516.35513.98216.3368.49712.7821.8061.9912.0363.5398.4911.588.0456.795.1187.6963.4516.676.59
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities NA-94.403NANANA55.465NANANA31.744NANANA-147.948NANANANANANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment NA765000.0NANANA1282000.0NANANA1373000.0NANANA1319000.0NANANA555000.0NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities NA133.743NANANA-22.683NANANA36.362NANANA127.714NANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock NA6.575NANANA5.823NANANA4.239NANANA3.129NANANA2.137NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31

us-gaap:CommonStockValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312013-01-02
Value229000.0234000.0244000.0243000.0239000.0238000.0238000.0237000.0237000.0236000.0191000.0191000.0191000.0158000.0155000.0154000.0154000.0118000.02000000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockSharesIssued



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value22.93729623.38149624.42034499999999824.33874823.89703823.82743799999999723.75179799999999723.69463723.66459623.6124319.12204919.09315299999999719.08740899999999715.78065099999999915.48349915.40442315.40294611.7974040.138239
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesOutstanding



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value22.93729623.38149624.42034499999999824.33874823.89703823.82743799999999723.75179799999999723.69463723.66459623.6124319.12204919.09315299999999719.08740899999999715.78065099999999915.4834990.015.40294611.797404
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

Common Stock Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value23.33996424.53800224.68452899999999824.30321099999999724.20466099999999824.32574324.26811099999999821.35151119.70421717.32008916.35163715.85827299999999913.63507412.22929312.13052912.098476
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value23.3388924.43397524.48842224.08177723.99811923.85580523.81543620.90173799999999819.26540916.80372415.73641215.57870299999999913.35828911.95738111.91141399999999911.899918999999999
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:EarningsPerShareBasic



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.530.060.520.510.670.580.680.350.530.080.10.10.210.540.740.510.510.430.640.290.560.55
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareDiluted



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.530.060.510.510.670.570.670.350.520.080.10.10.20.520.720.510.50.420.630.280.550.54
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:ProductOrService

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax

msbi:AssetManagement


Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value4.2094.3974.0823.6174.3274.3223.1189999999999998
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating6.96.86.76.17.67.46.7
Percentage of InterestIncomeOperating msbi:AssetManagement0.00.00.00.00.00.00.0
msbi:InterchangeRevenues


Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2.83299999999999973.24899999999999973.012.67999999999999972.7592.9292.09
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax67.373.973.774.163.867.867.0
Percentage of InterestIncomeOperating4.65.05.04.54.85.04.5
Percentage of InterestIncomeOperating msbi:InterchangeRevenues0.00.00.00.00.00.00.0
msbi:NonsufficientFundFees


Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1.86599999999999992.0961.8011.7542.0981.99099999999999991.45
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax44.347.744.148.548.546.146.5
Percentage of InterestIncomeOperating3.03.23.03.03.73.43.1
Percentage of InterestIncomeOperating msbi:NonsufficientFundFees0.00.00.00.00.00.00.0
msbi:OtherDepositAccount


Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.78999999999999990.91199999999999990.8380.7660.7060.7020.517
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax18.820.720.521.216.316.216.6
Percentage of InterestIncomeOperating1.31.41.41.31.21.21.1
Percentage of InterestIncomeOperating msbi:OtherDepositAccount0.00.00.00.00.00.00.0
msbi:OtherWealthManagementRevenue


Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.54399999999999990.6960.6510.5880.338999999999999970.2130.23099999999999998
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.915.815.916.37.84.97.4
Percentage of InterestIncomeOperating0.91.11.11.00.60.40.5
Percentage of InterestIncomeOperating msbi:OtherWealthManagementRevenue0.00.00.00.00.00.00.0
us-gaap:CreditCardMerchantDiscount


Period End2020-03-312019-09-302019-06-302019-03-31
Value0.3510.3670.388999999999999960.375
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax8.38.39.510.4
Percentage of InterestIncomeOperating0.60.60.60.6
Percentage of InterestIncomeOperating us-gaap:CreditCardMerchantDiscount0.00.00.00.0
us-gaap:InvestmentAdvisoryManagementAndAdministrativeService


Period End2020-03-312019-09-302019-06-302019-03-31
Value0.5290.54799999999999990.53899999999999990.529
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.612.513.214.6
Percentage of InterestIncomeOperating0.90.80.90.9
Percentage of InterestIncomeOperating us-gaap:InvestmentAdvisoryManagementAndAdministrativeService0.00.00.00.0
us-gaap:InvestmentPerformance


Period End2020-03-312019-09-302019-06-302019-03-31
Value0.394999999999999960.3570.231999999999999980.219
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax9.48.15.76.1
Percentage of InterestIncomeOperating0.60.50.40.4
Percentage of InterestIncomeOperating us-gaap:InvestmentPerformance0.00.00.00.0
us-gaap:ServiceOther


Period End2020-03-312019-09-302019-06-302019-03-31
Value0.9380.90799999999999990.78799999999999990.818
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax22.320.719.322.6
Percentage of InterestIncomeOperating1.51.41.31.4
Percentage of InterestIncomeOperating us-gaap:ServiceOther0.00.00.00.0

us-gaap:ProductOrService, us-gaap:InitialApplicationPeriodCumulativeEffectTransition

msbi:AssetManagement, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value4.2734.0823.6174.3274.3223.1189999999999998
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating7.16.76.17.67.46.7
Percentage of InterestIncomeOperating msbi:AssetManagement us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
msbi:InterchangeRevenues, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3.0133.012.67999999999999972.7592.9292.045
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.073.774.163.867.865.6
Percentage of InterestIncomeOperating5.05.04.54.85.04.4
Percentage of InterestIncomeOperating msbi:InterchangeRevenues us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
msbi:NonsufficientFundFees, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.9611.8011.7542.0981.99099999999999991.45
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.044.148.548.546.146.5
Percentage of InterestIncomeOperating1.63.03.03.73.43.1
Percentage of InterestIncomeOperating msbi:NonsufficientFundFees us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
msbi:OtherDepositAccount, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.7450.8380.7660.7060.7020.517
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.020.521.216.316.216.6
Percentage of InterestIncomeOperating1.21.41.31.21.21.1
Percentage of InterestIncomeOperating msbi:OtherDepositAccount us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
msbi:OtherWealthManagementRevenue, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.6130.6510.5880.338999999999999970.2130.23099999999999998
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.015.916.37.84.97.4
Percentage of InterestIncomeOperating1.01.11.00.60.40.5
Percentage of InterestIncomeOperating msbi:OtherWealthManagementRevenue us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
us-gaap:CreditCardMerchantDiscount, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.3040.388999999999999960.3750.447999999999999950.459999999999999960.33799999999999997
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.09.510.410.410.610.8
Percentage of InterestIncomeOperating0.50.60.60.80.80.7
Percentage of InterestIncomeOperating us-gaap:CreditCardMerchantDiscount us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
us-gaap:InvestmentAdvisoryManagementAndAdministrativeService, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.4950.53899999999999990.5290.5310.4950.46499999999999997
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.013.214.612.311.514.9
Percentage of InterestIncomeOperating0.80.90.90.90.81.0
Percentage of InterestIncomeOperating us-gaap:InvestmentAdvisoryManagementAndAdministrativeService us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
us-gaap:InvestmentPerformance, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.3170.231999999999999980.2190.269999999999999960.2860.264
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.05.76.16.26.68.5
Percentage of InterestIncomeOperating0.50.40.40.50.50.6
Percentage of InterestIncomeOperating us-gaap:InvestmentPerformance us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0
us-gaap:ServiceOther, us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.92899999999999990.78799999999999990.8180.277999999999999970.68699999999999991.07
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.019.322.66.415.934.3
Percentage of InterestIncomeOperating1.51.31.40.51.22.3
Percentage of InterestIncomeOperating us-gaap:ServiceOther us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic6060.00.00.00.00.00.0

Revenue From Contract With Customer Including Assessed Tax

us-gaap:InterestIncomeOperating



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value60.54799999999999561.31464.44465.00660.63599999999999659.43199999999999561.59256.98699999999999558.28299999999999446.50499999999999543.543.24599999999999534.52831.83929.98099999999999831.18632.11527.96730.29999999999999728.94899999999999831.24199999999999727.305
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Interest Income Operating

us-gaap:InterestExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value11.55914.66299999999999815.75715.55614.55913.83113.05699999999999911.9059999999999999.9978.327.46399999999999956.4815.1284.3784.0223.9214.12599999999999943.92599999999999973.8483.5122.9252.604
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating19.123.924.523.924.023.321.220.917.217.917.215.014.913.813.412.612.814.012.712.19.49.5

Interest Expense

us-gaap:IncomeTaxExpenseBenefit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3.4240.455999999999999963.2794.0155.0394.3544.5272.4363.0451.3765.77499999999999950.279999999999999971.3772.98299999999999978.3274.1019999999999993.6832.77699999999999972.8111.9282.7623.59
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating5.70.75.16.28.37.37.34.35.23.013.30.64.09.427.813.211.59.99.36.78.813.1

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3.7433.9093.5135.1324.9752.2465.2011.379
Percentage of IncomeTaxExpenseBenefit109.3857.287.5101.8114.392.2170.8100.2
Percentage of InterestIncomeOperating6.26.45.48.58.43.98.93.0
Percentage of InterestIncomeOperating msbi:BankingSegment0.00.00.00.00.00.00.00.0
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value0.409-2.6290.5850.55099999999999990.071-0.148-1.4020.407-0.0090.3621.19699999999999980.1042.08699999999999970.89699999999999991.0970.178
Percentage of IncomeTaxExpenseBenefit11.9-576.514.610.91.6-6.1-46.029.6-3.226.340.12.556.732.356.96.4
Percentage of InterestIncomeOperating0.7-4.30.90.90.1-0.3-2.40.9-0.01.03.80.36.53.23.80.6
Percentage of InterestIncomeOperating msbi:CommercialFhaOriginationAndServicing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
msbi:WealthManagement


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.2050.2050.066999999999999990.196999999999999980.139999999999999990.3440.1510.1410.4820.147
Percentage of IncomeTaxExpenseBenefit6.045.01.73.93.214.15.010.2172.110.7
Percentage of InterestIncomeOperating0.30.30.10.30.20.60.30.31.10.4
Percentage of InterestIncomeOperating msbi:WealthManagement0.00.00.00.00.00.00.00.00.00.0
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-0.9329999999999999-1.029-0.15-0.841-0.832-0.006-0.9049999999999999-0.41-0.707-0.517-0.5559999999999999-0.575-0.712-0.586-0.495-0.442
Percentage of IncomeTaxExpenseBenefit-27.2-225.7-3.7-16.7-19.1-0.2-29.7-29.8-252.5-37.5-18.6-14.0-19.3-21.1-25.7-16.0
Percentage of InterestIncomeOperating-1.5-1.7-0.2-1.4-1.4-0.0-1.6-0.9-1.6-1.5-1.7-1.8-2.2-2.1-1.7-1.4
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxesPaidNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value0.89799999999999990.336999999999999970.0289999999999999980.0050.157
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1.50.60.10.00.6

Income Taxes Paid Net

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.54912.79212.65516.35513.98216.3368.49712.7821.80599999999999981.99099999999999992.0363.53899999999999978.4911.588.0456.795.1179999999999997.6963.45099999999999966.676.59
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating2.519.819.527.023.526.514.921.93.94.64.710.226.738.625.821.118.325.411.921.324.1

Profit Loss

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value14.8472.56113.64120.04119.576.08211.195-0.67199999999999992.1334.81499999999999958.9037.9068.127.2334.74.637
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating24.54.221.033.132.910.719.2-1.44.913.928.025.425.325.916.214.8

Comprehensive Income Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value1.0120.9863.6865.588-2.415-1.587-2.47799999999999980.4132.114
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1.71.56.19.4-4.2-2.7-5.31.37.6

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value1.0120.9863.6865.588-2.415-1.587-2.47799999999999980.4132.114
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1.71.56.19.4-4.2-2.7-5.31.37.6
Percentage of InterestIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:NetIncomeLoss



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value12.5689999999999991.54912.65516.35513.9828.49712.7821.80599999999999982.0363.53899999999999978.4911.5838.0516.7895.1197.6949999999999993.4456.6536.531
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating20.82.519.527.023.514.921.93.94.710.226.738.625.821.118.325.411.921.323.9

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value11.2939999999999998.58813.03214.93799999999999913.8699.70911.4599999999999991.896
Percentage of NetIncomeLoss89.9554.4103.091.399.2114.389.7105.0
Percentage of InterestIncomeOperating18.714.020.024.623.317.019.74.1
Percentage of InterestIncomeOperating msbi:BankingSegment0.00.00.00.00.00.00.00.0
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1.04-6.761-0.467999999999999971.4230.18-0.103-2.964-0.38799999999999996-0.0139999999999999990.466999999999999971.87199999999999990.1573.13
Percentage of NetIncomeLoss8.3-436.5-3.78.71.3-1.2-23.2-21.5-0.713.222.02.046.1
Percentage of InterestIncomeOperating1.7-11.0-0.72.30.3-0.2-5.1-0.8-0.01.45.90.59.7
Percentage of InterestIncomeOperating msbi:CommercialFhaOriginationAndServicing0.00.00.00.00.00.00.00.00.00.00.00.00.0
msbi:WealthManagement


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value2.05099999999999971.8592.55499999999999971.5351.56599999999999982.0282.4511.6380.9880.8939999999999999
Percentage of NetIncomeLoss16.3120.020.29.411.223.919.290.748.525.3
Percentage of InterestIncomeOperating3.43.03.92.52.63.64.23.52.32.6
Percentage of InterestIncomeOperating msbi:WealthManagement0.00.00.00.00.00.00.00.00.00.0
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-1.8159999999999998-2.137-2.464-1.541-1.633-3.1371.6980.7769999999999999-0.209-0.494-1.9109999999999998-0.609-4.038
Percentage of NetIncomeLoss-14.4-138.0-19.5-9.4-11.7-36.913.343.0-10.3-14.0-22.5-7.6-59.5
Percentage of InterestIncomeOperating-3.0-3.5-3.8-2.5-2.7-5.52.91.7-0.5-1.4-6.0-2.0-12.6
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-31
Value12.5689999999999991.54912.65516.35513.9828.49712.7821.80599999999999988.49
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating20.82.519.527.023.514.921.93.926.7
Percentage of InterestIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value12.4391.48412.57716.18699999999999813.8359999999999998.41312.671.73899999999999992.0093.528.498.0136.7535.1193.4236.609
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating20.52.419.326.723.314.821.73.74.610.226.725.721.018.311.821.2

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value12.4391.48412.57816.18813.8359999999999998.41412.6711.73899999999999991.993.58.4398.0136.7545.0883.4236.609999999999999
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating20.52.419.326.723.314.821.73.74.610.126.525.721.018.211.821.2

Net Income Loss Available To Common Stockholders Diluted

us-gaap:Assets



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value6644.4986208.236087.0176113.90399999999955546.0549999999995641.785637.6735724.6125730.5999999999995723.3719999999994412.7014347.76099999999954491.6423373.57699999999983233.7233247.7273021.78399999999972898.082884.8242832.3082753.58099999999972676.614
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

msbi:BankingSegment


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
Value6564.0176132.9636000.4966038.4095478.5149999999995582.4945571.75199999999955689.5855780.3135671.2314336.30099999999953170.6299999999997
Percentage of Assets98.898.898.698.898.898.998.899.4100.999.198.398.0
Percentage of Assets98.898.898.698.898.898.998.899.4100.999.198.398.0
Percentage of Assets msbi:BankingSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value88.55181.3939999999999991.49679.20188.3294.79791.10799999999999113.46394.48191.5899.685121.51492.643105.20299999999999129.94299999999998100.51599999999999145.885144.25189.2419999999999982.991101.515119.649
Percentage of Assets1.31.31.51.31.61.71.62.01.61.62.32.82.13.14.03.14.85.03.12.93.74.5
Percentage of Assets1.31.31.51.31.61.71.62.01.61.62.32.82.13.14.03.14.85.03.12.93.74.5
Percentage of Assets msbi:CommercialFhaOriginationAndServicing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
msbi:WealthManagement


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value22.25521.87520.96899999999999819.90319.39819.03899999999999818.21817.52817.17116.57315.97915.39115.6445.55
Percentage of Assets0.30.40.30.30.30.30.30.30.30.30.40.40.30.2
Percentage of Assets0.30.40.30.30.30.30.30.30.30.30.40.40.30.2
Percentage of Assets msbi:WealthManagement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value-30.325-28.002-25.944-23.608999999999998-40.178-54.55-43.405-95.964-161.36499999999998-106.30199999999999-90.50099999999999-144.35299999999998-101.791-97.72399999999999-121.985-105.21-146.583-145.828-90.957-88.75699999999999-107.091-153.511
Percentage of Assets-0.5-0.5-0.4-0.4-0.7-1.0-0.8-1.7-2.8-1.9-2.1-3.3-2.3-2.9-3.8-3.2-4.9-5.0-3.2-3.1-3.9-5.7
Percentage of Assets-0.5-0.5-0.4-0.4-0.7-1.0-0.8-1.7-2.8-1.9-2.1-3.3-2.3-2.9-3.8-3.2-4.9-5.0-3.2-3.1-3.9-5.7
Percentage of Assets us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Liabilities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value6010.9095577.075425.1065458.3824906.16699999999955017.6125029.1485130.4659999999995138.0655137.9873963.1563897.07199999999974039.68999999999963039.24399999999972911.9152925.9372705.4692651.768
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets90.589.889.189.388.588.989.289.689.789.889.889.689.990.190.090.189.591.9

Liabilities

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value6644.4986208.236087.0176113.90399999999955546.0549999999995641.785637.6735724.6125730.5999999999995723.3719999999994412.7014347.76099999999954491.6423373.57699999999983233.7233247.7273021.78399999999972884.824
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value633.5889999999999631.16661.911655.5219999999999639.8879999999999624.168608.525594.146592.535585.385449.54499999999996450.68899999999996451.952334.33299999999997321.77321.74899999999997316.268238.386232.88219.456
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.510.210.910.711.511.110.810.410.310.210.210.410.19.910.09.910.58.28.18.2

us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Period End2020-06-30
Value0.713
Percentage of StockholdersEquity0.1
Percentage of Assets0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.0
us-gaap:AccumulatedOtherComprehensiveIncome


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value10.7328.4539999999999997.4419999999999998.1527.16599999999999953.48-2.108-4.7219999999999995-2.307-0.721.7581.1761.079-0.19699999999999998-0.619.339.4758.1429999999999996.02910.636999999999999
Percentage of StockholdersEquity1.71.31.11.21.10.6-0.3-0.8-0.4-0.10.40.30.2-0.1-0.22.93.03.42.64.8
Percentage of Assets0.20.10.10.10.10.1-0.0-0.1-0.0-0.00.00.00.0-0.0-0.00.30.30.30.20.4
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value462.577468.75488.30499999999995488.025477.412475.811473.83299999999997473.05699999999996472.207470.93699999999995330.14799999999997329.93399999999997329.347216.498209.712208.539208.179136.319135.909134.423
Percentage of StockholdersEquity73.074.373.874.474.676.277.979.679.780.473.473.272.964.865.264.865.857.258.461.3
Percentage of Assets7.07.68.08.08.68.48.48.38.28.27.57.67.36.46.56.46.94.74.75.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:CommonStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value0.228999999999999980.233999999999999990.2440.2430.2390.2380.2380.2370.2370.2360.1910.1910.1910.1580.1550.1540.1540.1180.1180.11699999999999999
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:PreferredStock


Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.00.00.02.68399999999999972.7332.78099999999999972.82899999999999972.8762.9232.96999999999999983.01499999999999973.134
Percentage of StockholdersEquity0.00.00.00.40.40.50.50.50.50.70.70.7
Percentage of Assets0.00.00.00.00.00.00.00.10.10.10.10.1
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value160.051153.72199999999998165.92159.102152.387141.906133.781122.74499999999999119.52199999999999112.009114.478116.37299999999999118.201117.874112.51299999999999103.72698.4693.80690.82474.279
Percentage of StockholdersEquity25.324.425.124.323.822.722.020.720.219.125.525.826.235.335.032.231.139.439.033.8
Percentage of Assets2.42.52.72.62.72.52.42.12.12.02.62.72.63.53.53.23.33.23.12.8
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value519.8679999999999449.39599999999996394.505409.346245.415276.47999999999996213.7242.433276.33099999999996331.183215.202183.572334.356218.096190.71599999999998228.03123.366162.416212.475206.664172.23159.90386.723
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.87.26.56.74.44.93.84.24.85.84.94.27.46.55.97.04.15.67.47.36.36.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value128.924128.809128.265129.64499999999998129.207127.39399999999999126.22999999999999124.97399999999999126.74499999999999126.15899999999999105.78992.49995.667
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.12.12.12.32.32.22.22.22.22.42.93.3

us-gaap:PropertyPlantAndEquipmentByType

us-gaap:BuildingAndBuildingImprovements


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value77.3377.0279999999999977.2959999999999978.1778.78277.2899999999999976.1409999999999975.5069999999999978.91979.2269999999999963.83699999999999656.76658.922
Percentage of PropertyPlantAndEquipmentGross60.059.860.360.361.060.760.360.462.362.860.361.461.6
Percentage of Assets1.21.21.31.31.41.41.41.31.41.41.41.82.0
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:Equipment


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value32.47132.65831.84630.90430.19429.87299999999999829.85799999999999729.23599999999999727.59527.31925.84321.41921.802999999999997
Percentage of PropertyPlantAndEquipmentGross25.225.424.823.823.423.423.723.421.821.724.423.222.8
Percentage of Assets0.50.50.50.50.50.50.50.50.50.50.60.70.8
Percentage of Assets us-gaap:Equipment0.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:Land


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value19.12299999999999819.12299999999999819.12299999999999820.57099999999999820.23099999999999820.23099999999999820.23099999999999820.23099999999999820.23099999999999819.61316.10899999999999814.31414.942
Percentage of PropertyPlantAndEquipmentGross14.814.814.915.915.715.916.016.216.015.515.215.515.6
Percentage of Assets0.30.30.30.30.40.40.40.40.40.30.40.40.5
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value39.87838.69099999999999537.2135.74899999999999534.38299999999999632.87999999999999531.38999999999999729.91231.96230.82699999999999829.62725.80722.534
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.60.60.50.60.50.70.80.8

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value89.0459999999999990.11891.0549999999999993.89694.82494.51494.8399999999999995.06294.78395.33276.1619999999999980.94176.59866.91466.69270.72772.1469999999999973.133
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.51.51.51.71.71.71.71.71.71.71.91.72.02.12.22.42.5

Property Plant And Equipment Net

us-gaap:Goodwill



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value172.796172.796171.75799999999998171.07399999999998164.673164.673164.673164.04399999999998164.04399999999998155.67498.62497.35196.9450.80699999999999548.83646.51946.51946.519
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.82.82.83.02.92.92.92.92.72.22.22.21.51.51.41.51.6

us-gaap:BusinessAcquisition

msbi:HomestarFinancialGroupInc.


Period End2020-03-312019-09-302019-07-17
Value8.1236.4017.085
Percentage of Goodwill4.73.70.0
Percentage of Assets0.10.10.0
Percentage of Assets msbi:HomestarFinancialGroupInc.0.00.00.0

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value157.158157.158156.12155.436149.035149.035149.03582.98599999999999
Percentage of Goodwill91.091.090.990.990.590.590.584.1
Percentage of Assets2.42.52.62.52.72.62.61.9
Percentage of Assets msbi:BankingSegment2.42.62.62.62.72.72.71.9

Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value31.49499999999999733.12399999999999534.88599999999999636.6933.89335.56599999999999537.37639.22841.08099999999999646.47316.93217.96599999999999818.4598.6337.1869999999999995.3915.9049999999999997.004
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.60.60.60.60.70.70.70.80.40.40.40.30.20.20.20.2

Intangible Assets Net Excluding Goodwill

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value31.49499999999999733.12399999999999534.88599999999999636.6933.89335.56599999999999537.37639.22841.08099999999999646.47316.93217.96599999999999818.4598.6337.1869999999999995.3915.9049999999999997.004
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.60.60.60.60.70.70.70.80.40.40.40.30.20.20.20.2

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CoreDeposits


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value23.54424.88126.33799999999999727.8325.02099999999999726.40327.90929.4530.99199999999999735.28312.66899999999999913.61399999999999913.9363.96699999999999964.3614.7719999999999995.18199999999999956.071
Percentage of FiniteLivedIntangibleAssetsNet74.875.175.575.973.874.274.775.175.475.974.875.875.546.060.788.587.886.7
Percentage of Assets0.40.40.40.50.50.50.50.50.50.60.30.30.30.10.10.10.20.2
Percentage of Assets us-gaap:CoreDeposits0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:CustomerRelationships


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value7.9518.2438.5488.868.8729.1639.4669999999999999.77799999999999910.08911.194.2634.3519999999999994.5234.66599999999999952.8260.6190.7230.9329999999999999
Percentage of FiniteLivedIntangibleAssetsNet25.224.924.524.126.225.825.324.924.624.125.224.224.554.039.311.512.213.3
Percentage of Assets0.10.10.10.10.20.20.20.20.20.20.10.10.10.10.10.00.00.0
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:EquitySecuritiesFvNi



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9003000.05640000.05621000.05612000.03369000.03413000.03334000.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.1

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

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, msbi:EquitySecurity


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value9003000.05640000.05621000.05612000.03369000.03413000.03334000.02830000.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring msbi:EquitySecurity0.00.00.00.00.00.00.00.0

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, msbi:EquitySecurity


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value9003000.05640000.05621000.05612000.03369000.03413000.03334000.02830000.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:FairValueMeasurementsRecurring msbi:EquitySecurity0.00.00.00.00.00.00.00.0

Equity Securities Fv Ni

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-06-302020-03-312019-12-312017-03-312016-12-31
Value11.3419.91111.2779999999999998.868.597999999999999
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.30.3

Deferred Income Tax Liabilities Net

us-gaap:StockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value633.5889999999999631.16661.911655.5219999999999639.8879999999999624.168608.525594.146592.535585.385449.54499999999996450.68899999999996451.952334.33299999999997321.77321.74899999999997316.268238.386232.88219.456
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.510.210.910.711.511.110.810.410.310.210.210.410.19.910.09.910.58.28.18.2

us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Period End2020-06-30
Value0.713
Percentage of StockholdersEquity0.1
Percentage of Assets0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.0
us-gaap:AccumulatedOtherComprehensiveIncome


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value10.7328.4539999999999997.4419999999999998.1527.16599999999999953.48-2.108-4.7219999999999995-2.307-0.721.7581.1761.079-0.19699999999999998-0.619.339.4758.1429999999999996.02910.636999999999999
Percentage of StockholdersEquity1.71.31.11.21.10.6-0.3-0.8-0.4-0.10.40.30.2-0.1-0.22.93.03.42.64.8
Percentage of Assets0.20.10.10.10.10.1-0.0-0.1-0.0-0.00.00.00.0-0.0-0.00.30.30.30.20.4
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value462.577468.75488.30499999999995488.025477.412475.811473.83299999999997473.05699999999996472.207470.93699999999995330.14799999999997329.93399999999997329.347216.498209.712208.539208.179136.319135.909134.423
Percentage of StockholdersEquity73.074.373.874.474.676.277.979.679.780.473.473.272.964.865.264.865.857.258.461.3
Percentage of Assets7.07.68.08.08.68.48.48.38.28.27.57.67.36.46.56.46.94.74.75.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:CommonStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value0.228999999999999980.233999999999999990.2440.2430.2390.2380.2380.2370.2370.2360.1910.1910.1910.1580.1550.1540.1540.1180.1180.11699999999999999
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:PreferredStock


Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.00.00.02.68399999999999972.7332.78099999999999972.82899999999999972.8762.9232.96999999999999983.01499999999999973.134
Percentage of StockholdersEquity0.00.00.00.40.40.50.50.50.50.70.70.7
Percentage of Assets0.00.00.00.00.00.00.00.10.10.10.10.1
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value160.051153.72199999999998165.92159.102152.387141.906133.781122.74499999999999119.52199999999999112.009114.478116.37299999999999118.201117.874112.51299999999999103.72698.4693.80690.82474.279
Percentage of StockholdersEquity25.324.425.124.323.822.722.020.720.219.125.525.826.235.335.032.231.139.439.033.8
Percentage of Assets2.42.52.72.62.72.52.42.12.12.02.62.72.63.53.53.23.33.23.12.8
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:CommonStockValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312013-01-02
Value229000.0234000.0244000.0243000.0239000.0238000.0238000.0237000.0237000.0236000.0191000.0191000.0191000.0158000.0155000.0154000.0154000.0118000.02000000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:AdditionalPaidInCapital



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value462.577468.75488.30499999999995488.025477.412475.811473.83299999999997473.05699999999996472.207470.93699999999995330.14799999999997329.93399999999997329.347216.498209.712208.452208.09199999999998135.822
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.07.68.08.08.68.48.48.38.28.27.57.67.36.46.56.46.94.7

Additional Paid In Capital

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value160.051153.72199999999998165.92159.102152.387141.906133.781122.74499999999999119.52199999999999112.009114.478116.37299999999999118.201117.874112.51299999999999103.81398.54790.911
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.52.72.62.72.52.42.12.12.02.62.72.63.53.53.23.33.2

Retained Earnings Accumulated Deficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value10.7328.4539999999999997.4419999999999998.1527.16599999999999953.48-2.108-4.7219999999999995-2.307-0.721.7581.1761.079-0.19699999999999998-0.619.339.4756.029
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.10.10.10.10.1-0.0-0.1-0.0-0.00.00.00.0-0.0-0.00.30.30.2

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value616000.0602000.0452000.0493000.0846000.0273000.0398000.0124000.0132000.0106000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value616000.0602000.0452000.0493000.0846000.0273000.0398000.0124000.0132000.0106000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-03-312018-03-312017-03-31
Value15.55129.99799999999999847.87547.614
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0
Percentage of InterestIncomeOperating25.450.5102.9149.5

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-03-312018-03-312017-03-31
Value-94.4029999999999955.46499999999999631.744-147.948
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0
Percentage of InterestIncomeOperating-154.093.368.3-464.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-03-312018-03-312017-03-31
Value133.743-22.68336.362127.714
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0
Percentage of InterestIncomeOperating218.1-38.278.2401.1

Net Cash Provided By Used In Financing Activities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-03-312018-03-312017-03-31
Value54.89162.779999999999994115.98127.38
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0
Percentage of InterestIncomeOperating89.5105.6249.486.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-03-312018-03-312017-03-31
Value15.55129.99799999999999847.87547.614
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0
Percentage of InterestIncomeOperating25.450.5102.9149.5

Net Cash Provided By Used In Operating Activities

us-gaap:NetIncomeLoss



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value12.5689999999999991.54912.65516.35513.9828.49712.7821.80599999999999982.0363.53899999999999978.4911.5838.0516.7895.1197.6949999999999993.4456.6536.531
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating20.82.519.527.023.514.921.93.94.710.226.738.625.821.118.325.411.921.323.9

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value11.2939999999999998.58813.03214.93799999999999913.8699.70911.4599999999999991.896
Percentage of NetIncomeLoss89.9554.4103.091.399.2114.389.7105.0
Percentage of InterestIncomeOperating18.714.020.024.623.317.019.74.1
Percentage of InterestIncomeOperating msbi:BankingSegment0.00.00.00.00.00.00.00.0
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1.04-6.761-0.467999999999999971.4230.18-0.103-2.964-0.38799999999999996-0.0139999999999999990.466999999999999971.87199999999999990.1573.13
Percentage of NetIncomeLoss8.3-436.5-3.78.71.3-1.2-23.2-21.5-0.713.222.02.046.1
Percentage of InterestIncomeOperating1.7-11.0-0.72.30.3-0.2-5.1-0.8-0.01.45.90.59.7
Percentage of InterestIncomeOperating msbi:CommercialFhaOriginationAndServicing0.00.00.00.00.00.00.00.00.00.00.00.00.0
msbi:WealthManagement


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value2.05099999999999971.8592.55499999999999971.5351.56599999999999982.0282.4511.6380.9880.8939999999999999
Percentage of NetIncomeLoss16.3120.020.29.411.223.919.290.748.525.3
Percentage of InterestIncomeOperating3.43.03.92.52.63.64.23.52.32.6
Percentage of InterestIncomeOperating msbi:WealthManagement0.00.00.00.00.00.00.00.00.00.0
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-1.8159999999999998-2.137-2.464-1.541-1.633-3.1371.6980.7769999999999999-0.209-0.494-1.9109999999999998-0.609-4.038
Percentage of NetIncomeLoss-14.4-138.0-19.5-9.4-11.7-36.913.343.0-10.3-14.0-22.5-7.6-59.5
Percentage of InterestIncomeOperating-3.0-3.5-3.8-2.5-2.7-5.52.91.7-0.5-1.4-6.0-2.0-12.6
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-31
Value12.5689999999999991.54912.65516.35513.9828.49712.7821.80599999999999988.49
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating20.82.519.527.023.514.921.93.926.7
Percentage of InterestIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.54912.79212.65516.35513.98216.3368.49712.7821.80599999999999981.99099999999999992.0363.53899999999999978.4911.588.0456.795.1179999999999997.6963.45099999999999966.676.59
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating2.519.819.527.023.526.514.921.93.94.64.710.226.738.625.821.118.325.411.921.324.1

Profit Loss

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-03-312018-03-312017-03-31
Value-94.4029999999999955.46499999999999631.744-147.948
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0
Percentage of InterestIncomeOperating-154.093.368.3-464.7

Net Cash Provided By Used In Investing Activities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value765000.01282000.01373000.01319000.0555000.0
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0

Payments To Acquire Property Plant And Equipment

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-03-312018-03-312017-03-31
Value133.743-22.68336.362127.714
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0
Percentage of InterestIncomeOperating218.1-38.278.2401.1

Net Cash Provided By Used In Financing Activities

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value6.5749999999999995.82299999999999954.2393.1292.137
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0

Payments Of Dividends Common Stock

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value14.31299999999999914.07814.22414.84310.22599999999999910.677
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0

Operating Lease Right Of Use Asset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value519.8679999999999449.39599999999996394.505409.346245.415276.47999999999996213.7242.433276.33099999999996331.183215.202183.572334.356218.096190.71599999999998212.475159.903
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:ProceedsFromRepaymentsOfShortTermDebt



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-38.451-8.403-25.433-7.521999999999999-5.888999999999999
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

msbi:AmortizationOfOperatingLeaseRightOfUseAsset



Period End2020-03-312019-03-31
Value670000.0708000.0
Percentage of AmortizationOfOperatingLeaseRightOfUseAsset100.0100.0

msbi:CommissionsAndFeesIncomeFromDepositorAccounts



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1.7062.65599999999999973.0082.6392.522.8042.6931.96699999999999992.1331.12199999999999990.892
Percentage of CommissionsAndFeesIncomeFromDepositorAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:DividendsCommonStockAndShareBasedCompensation



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-31
Value6.2399999999999996.5749999999999995.9625.845.82299999999999955.2395.2334.2393.129
Percentage of DividendsCommonStockAndShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-31
Value6.2399999999999996.5749999999999995.9625.845.82299999999999955.2395.2334.2393.129
Percentage of DividendsCommonStockAndShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value12.5689999999999991.54912.79212.67716.32099999999999813.94799999999999916.3028.46212.7459999999999991.771.9542.0093.528.49
Percentage of EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:EquitySecuritiesFvNiSales



Period End2020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.00.0105000.00.00.07700000.00.0
Percentage of EquitySecuritiesFvNiSales0.00.0100.00.00.0100.00.0

msbi:EquitySecuritiesFvniPurchases



Period End2020-03-312019-03-312018-03-31
Value23000.016000.014000.0
Percentage of EquitySecuritiesFvniPurchases100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

msbi:FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasis

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-06-302019-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value3.38922.634-0.1781.0223.7223.0010.5981.22099999999999993.0745.38
Percentage of FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

msbi:FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasisImpairedLoans

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-06-302019-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value3.29512.918999999999999-1.2520.9810.0010.2130.350.1440.083999999999999993.135
Percentage of FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasisImpairedLoans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

msbi:FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasisOtherRealEstateOwned

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-06-302019-03-312017-06-302016-09-302016-06-30
Value652000.0605000.00.016000.08000.04000.0215000.0
Percentage of FairValueGainsLossesRecognizedOnAssetsMeasuredOnNonRecurringBasisOtherRealEstateOwned100.0100.00.0100.0100.0100.0100.0

msbi:FeesAndCommissionsFromDebitCards



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3.0132.83299999999999973.24899999999999973.012.67999999999999972.7592.9292.091.7241.11399999999999990.977
Percentage of FeesAndCommissionsFromDebitCards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:FeesAndCommissionsMortgageBankingAndServicingAndOtherCommercial



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value3.41399999999999971.2672.89399999999999974.9173.273.130.3263.333.77699999999999974.1536.6949999999999993.268.5386.5619999999999995.9144.101
Percentage of FeesAndCommissionsMortgageBankingAndServicingAndOtherCommercial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:FeesAndCommissionsMortgageBankingAndServicingAndOtherResidential



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2.7231.7550.720.6110.8341.1542.1161.4182.31699999999999972.332.9164.991.0451.1213.48999999999999984.832
Percentage of FeesAndCommissionsMortgageBankingAndServicingAndOtherResidential100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:GainLossOnSaleOfMortgageServiceRightsHeldForSale



Period End2020-06-302020-03-312019-09-302019-06-302018-09-302018-06-302017-09-30
Value-391000.0-496000.070000.0515000.0-270000.0-188000.0-3617000.0
Percentage of GainLossOnSaleOfMortgageServiceRightsHeldForSale100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-06-302017-09-30
Value-391000.0-496000.0515000.0-3617000.0
Percentage of GainLossOnSaleOfMortgageServiceRightsHeldForSale100.0100.0100.0100.0

msbi:GainsLossesOnSalesOfOtherRealEstateExcludingWriteDowns



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-9000.015000.044000.0-12000.066000.086000.0166000.0307000.022000.0-4000.036000.033000.083000.0-4000.092000.0369000.0
Percentage of GainsLossesOnSalesOfOtherRealEstateExcludingWriteDowns100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:IncreaseDecreaseOnOperatingLeaseLiabilities



Period End2020-03-312019-03-31
Value-943000.0-741000.0
Percentage of IncreaseDecreaseOnOperatingLeaseLiabilities100.0100.0

msbi:InterestAndFeeIncomeLoansAndLeasesTaxExempt



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value785000.0836000.0877000.0918000.0974000.01006000.0802000.0467000.0313000.0323000.0317000.0254000.0322000.0323000.0309000.0322000.0
Percentage of InterestAndFeeIncomeLoansAndLeasesTaxExempt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:InterestAndFeeIncomeLoansAndLeasesTaxable



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value53.17299999999999553.53899999999999457.16253.02151.88249.21650.69941.03138.68930.25399999999999828.84226.90499999999999827.69599999999999823.54124.80727.081
Percentage of InterestAndFeeIncomeLoansAndLeasesTaxable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:InterestExpenseFederalHomeLoanBankAdvancesAndOtherBorrowings



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2.9052.9673.5243.5413.8473.2112.5821.8711.4940.8410.5660.3060.2560.135999999999999980.1110.23199999999999998
Percentage of InterestExpenseFederalHomeLoanBankAdvancesAndOtherBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:LoansAndLeasesReceivableImpairedTroubledDebtInterestIncomeRecognized



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value9000.020000.026000.029000.032000.017000.028000.030000.040000.019000.018000.090000.063000.045000.0
Percentage of LoansAndLeasesReceivableImpairedTroubledDebtInterestIncomeRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:NonMarketableSecuritiesEquitySecurities



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value680000.0605000.0592000.0597000.0621000.0540000.0482000.0399000.0331000.0239000.0218000.0174000.0174000.0
Percentage of NonMarketableSecuritiesEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:NoninterestIncomeOutOfScopeOfTopic606



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-3.85699999999999986.0767.2575.7296.5163.7627.242999999999999
Percentage of NoninterestIncomeOutOfScopeOfTopic606100.0100.0100.0100.0100.0100.0100.0

us-gaap:InitialApplicationPeriodCumulativeEffectTransition

us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value7.74599999999999967.2575.7296.5163.7627.0037.3679999999999997.45710.773
Percentage of NoninterestIncomeOutOfScopeOfTopic6060.0100.0100.0100.0100.096.70.00.00.0

msbi:OtherComprehensiveIncomeLossProvisionForCreditLoss



Period End2020-06-302019-06-30
Value52000.00.0
Percentage of OtherComprehensiveIncomeLossProvisionForCreditLoss100.00.0

msbi:PaymentsToAcquireNonmarketableEquitySecurities



Period End2020-03-312019-03-312018-03-312017-03-31
Value1.5637.9709999999999997.6099999999999994.156
Percentage of PaymentsToAcquireNonmarketableEquitySecurities100.0100.0100.0100.0

msbi:PreferredStockDividendAndAmortizationOfPremium



Period End2020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.0-22000.034000.034000.035000.036000.036000.027000.019000.0
Percentage of PreferredStockDividendAndAmortizationOfPremium0.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:PreferredStockPremiumAmortization



Period End2020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value0.048000.049000.048000.047000.047000.047000.056000.0
Percentage of PreferredStockPremiumAmortization0.0100.0100.0100.0100.0100.0100.0100.0

msbi:ProvisionForCreditLosses



Period End2020-03-312019-03-31
Value11.5789999999999993.243
Percentage of ProvisionForCreditLosses100.0100.0

msbi:ShortTermDebtWeightedAverageInterestRateDuringPeriod



Period End2020-03-312019-03-312018-03-312017-03-31
Value0.00730.00710.00340.0023
Percentage of ShortTermDebtWeightedAverageInterestRateDuringPeriod100.0100.0100.0100.0

msbi:UndistributedEarningsToCommonShareholders



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value6.263999999999999-5.0266.66299999999999910.3959999999999998.063.2057.468999999999999-2.469-1.82799999999999980.3275.329
Percentage of UndistributedEarningsToCommonShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:WealthManagementRevenue



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value5.69799999999999955.6775.9979999999999995.5044.9529999999999995.4675.4174.18199999999999953.47499999999999963.40599999999999972.872
Percentage of WealthManagementRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:WriteDownOfOtherRealEstateOwned



Period End2020-03-312019-03-31
Value605000.016000.0
Percentage of WriteDownOfOtherRealEstateOwned100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-702000.0-964000.0-689000.0296000.0252000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value409000.0382000.01205000.0408000.0327000.0620000.0832000.0408000.0283000.0515000.0577000.0279000.0278000.0154000.0201000.01253000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-312019-06-302019-03-31
Value68000.069000.092000.066000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts16.618.122.520.2
msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value183000.0191000.0221000.0210000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts44.750.054.264.2
msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value46000.044000.049000.022000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts11.211.512.06.7
us-gaap:CommercialPortfolioSegment, msbi:CommercialRealEstateLoans


Period End2020-06-302020-03-312019-06-302019-03-31
Value71000.014000.029000.07000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts17.43.77.12.1
us-gaap:CommercialPortfolioSegment, msbi:ConstructionAndLandDevelopmentLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value5000.059000.03000.07000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts1.215.40.72.1
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value36000.05000.014000.015000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts8.81.33.44.6

us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value3.470999999999999613.2169999999999996.5741.651.3821.33799999999999992.14399999999999971.1410.334999999999999961.35399999999999991.1670.8640.7262.69599999999999977.9490.6739999999999999
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.8380.9480.6910.45899999999999996
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs24.17.241.933.2
msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.3660.5980.464999999999999970.5559999999999999
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs10.54.528.240.2
msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0069999999999999990.387999999999999960.2230.153
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs0.22.913.511.1
us-gaap:CommercialPortfolioSegment, msbi:CommercialRealEstateLoans


Period End2020-06-302020-03-312019-06-302019-03-31
Value1.7467.8729999999999990.268999999999999960.057999999999999996
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs50.359.616.34.2
us-gaap:CommercialPortfolioSegment, msbi:ConstructionAndLandDevelopmentLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0620.0120.00.044
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs1.80.10.03.2
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.451999999999999963.39799999999999970.0020.11199999999999999
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs13.025.70.18.1

us-gaap:AmortizationOfIntangibleAssets



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1.6291.7621.8031.67299999999999981.80999999999999981.8531.57599999999999981.67499999999999981.1870.5790.5250.5140.5190.580.5970.602
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfMortgageServicingRightsMSRs



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value790000.0678000.0863000.01374000.01281000.0
Percentage of AmortizationOfMortgageServicingRightsMSRs100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value580912.089603.091943.096837.097628.0662.031259.031259.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesGrossUnrealizedGain



Period End2020-03-312019-03-312018-03-31
Value15.4117.3375.127
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedGain100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-03-312019-03-312018-03-31
Value9.4171.83999999999999990.622
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedGain61.125.112.1
msbi:CorporateDebtAndEquitySecurities


Period End2020-03-312019-03-312018-03-31
Value1.1680.8631.126
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedGain7.611.822.0
us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-03-312019-03-312018-03-31
Value0.92899999999999990.1330.039
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedGain6.01.80.8
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-03-312019-03-312018-03-31
Value3.8974.50099999999999943.327
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedGain25.361.364.9

us-gaap:AvailableForSaleDebtSecuritiesGrossUnrealizedLoss



Period End2020-03-312019-03-312018-03-31
Value3.752.5376.128
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedLoss100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-03-312019-03-312018-03-31
Value0.0489999999999999951.5163.804
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedLoss1.359.862.1
msbi:CorporateDebtAndEquitySecurities


Period End2020-03-312019-03-312018-03-31
Value2.5770.467999999999999970.296
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedLoss68.718.44.8
msbi:NonagencyMortgageBackedSecurities


Period End2020-03-31
Value0.84
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedLoss22.4
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-03-312019-03-312018-03-31
Value0.2840.1460.9199999999999999
Percentage of AvailableForSaleDebtSecuritiesGrossUnrealizedLoss7.65.815.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-31
Value0.26750.26750.24250.24250.24250.220.220.220.2
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Communication



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value946000.01290000.0765000.0677000.0671000.01289000.0699000.01547000.0723000.0386000.0546000.0546000.0547000.0516000.0506000.0643000.0
Percentage of Communication100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesGainLoss



Period End2020-06-302019-09-302019-06-302018-06-302018-03-31
Value0.00.0249999999999999980.013999999999999999-0.069999999999999990.065
Percentage of DebtAndEquitySecuritiesGainLoss0.0100.0100.0100.0100.0

us-gaap:LongtermDebtType, us-gaap:VariableRate

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

msbi:SubordinatedDebt27250MaturingSeptember303409, msbi:ThreeMonthSecuredOvernightFinancingRate


Period End2020-03-31
Value0.0405
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0
msbi:SubordinatedDebt38325MaturingJune182025, us-gaap:LondonInterbankOfferedRateLIBOR


Period End2020-03-31
Value0.0435
Percentage of DebtInstrumentBasisSpreadOnVariableRate1107.4
msbi:SubordinatedDebt40000MaturingOctober152027, us-gaap:LondonInterbankOfferedRateLIBOR


Period End2020-03-312017-10-13
Value0.04230.04229
Percentage of DebtInstrumentBasisSpreadOnVariableRate1104.40.0
msbi:SubordinatedDebt72750MaturingSeptember302909, msbi:ThreeMonthSecuredOvernightFinancingRate


Period End2020-03-31
Value0.0361
Percentage of DebtInstrumentBasisSpreadOnVariableRate189.1

us-gaap:VariableRate

us-gaap:LondonInterbankOfferedRateLIBOR


Period End2020-03-312017-10-132015-06-30
Value4.354.2294.35
Percentage of DebtInstrumentBasisSpreadOnVariableRate110740.70.00.0

us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-31
Value90000.056000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded100.0100.0
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302020-03-31
Value0.019000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded0.033.9

us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff

msbi:CorporateDebtAndEquitySecurities


Period End2020-06-30
Value20000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff100.0
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-30
Value18000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff90.0

us-gaap:Depreciation



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-03-31
Value1600000.01677000.01800000.01600000.01600000.01500000.01600000.01454000.01300000.01200000.01116000.01267000.0
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value0.65699999999999990.6260.5132.01.31.22.00.0741.09999999999999990.395999999999999961.5-5.24.51.20.271999999999999960.27099999999999996
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value6.1756.515.9145.79099999999999955.7765.2085.2014.2083.81799999999999963.1733.1292.77299999999999972.1252.1371.8811.881
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStockCash



Period End2020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.026000.083000.082000.082000.083000.083000.083000.019000.0
Percentage of DividendsPreferredStockCash0.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsShareBasedCompensation



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value65000.065000.048000.049000.047000.031000.032000.031000.019000.020000.020000.012000.011000.013000.012000.013000.0
Percentage of DividendsShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGain



Period End2020-06-302019-09-302019-06-302019-03-312018-06-302018-03-31
Value182000.054000.037000.067000.093000.0111000.0
Percentage of EquitySecuritiesFvNiUnrealizedGain100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value5000.02000.06000.020000.022000.067000.063000.056000.054000.085000.0-95000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-30
Value-4000.0-30000.0-7000.05000.07000.055000.0562000.0616000.0-3000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value5000.02000.06000.01020000.022000.059000.055000.048000.045000.03076000.086000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueOptionChangesInFairValueGainLoss1



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value690000.097000.0-117000.072000.0-385000.041000.0428000.0-348000.0-156000.0119000.0-226000.0
Percentage of FairValueOptionChangesInFairValueGainLoss1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value276000.0-158000.0-169000.034000.0-328000.0-131000.0260000.0-409000.089000.0120000.0-426000.0
Percentage of FairValueOptionChangesInFairValueGainLoss140.0-162.9144.447.285.2-319.560.7117.5-57.1100.8188.5
us-gaap:ResidentialPortfolioSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value414000.0255000.052000.038000.0-57000.0172000.0168000.061000.0-245000.0-1000.0200000.0
Percentage of FairValueOptionChangesInFairValueGainLoss160.0262.9-44.452.814.8419.539.3-17.5157.1-0.8-88.5

us-gaap:FederalDepositInsuranceCorporationPremiumExpense



Period End2020-06-302020-03-312019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value553000.01000.0367000.0435000.0549000.0539000.0548000.0565000.0468000.0370000.0388000.0498000.0463000.0371000.0551000.0
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsNumberOfContracts2



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302017-09-302017-06-302017-03-312016-09-302016-06-302015-06-30
Value11.06.08.03.012.08.01.02.01.02.04.01.0
Percentage of FinancingReceivableModificationsNumberOfContracts2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialLoan, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-06-302018-06-302017-03-312016-06-302015-06-30
Value2.01.01.01.03.01.0
Percentage of FinancingReceivableModificationsNumberOfContracts218.233.312.5100.075.0100.0
us-gaap:CommercialRealEstate, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-06-302019-03-312016-09-302016-06-30
Value2.00.03.02.01.0
Percentage of FinancingReceivableModificationsNumberOfContracts218.20.025.0100.025.0
us-gaap:ConstructionLoans, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-09-302019-06-302019-03-31
Value2.01.00.01.0
Percentage of FinancingReceivableModificationsNumberOfContracts218.212.50.08.3
us-gaap:ConsumerPortfolioSegment, msbi:OtherPortfolio


Period End2020-06-302019-06-302019-03-312018-06-30
Value0.00.01.04.0
Percentage of FinancingReceivableModificationsNumberOfContracts20.00.08.350.0
us-gaap:ResidentialRealEstate, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302017-09-302017-06-30
Value5.06.07.02.07.03.01.02.0
Percentage of FinancingReceivableModificationsNumberOfContracts245.5100.087.566.758.337.5100.0100.0

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302017-09-302017-06-302017-03-312016-09-302016-06-302015-09-30
Value1.7420.66999999999999990.5020.3582.0920.2480.090.3840.35310.2069999999999990.690.041999999999999996
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialLoan, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-06-302018-06-302017-03-312016-06-302015-09-30
Value0.4310.2490.0220.3530.68499999999999990.041999999999999996
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment224.769.68.9100.099.3100.0
us-gaap:CommercialRealEstate, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-06-302019-03-312016-09-302016-06-30
Value0.6060.01.837999999999999910.2069999999999990.005
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment234.80.087.9100.00.7
us-gaap:ConstructionLoans, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-09-302019-06-302019-03-31
Value0.4720.1550.00.016999999999999998
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment227.130.90.00.8
us-gaap:ConsumerPortfolioSegment, msbi:OtherPortfolio


Period End2020-06-302019-06-302019-03-312018-06-30
Value0.00.00.0150.019
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment20.00.00.77.7
us-gaap:ResidentialRealEstate, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302017-09-302017-06-30
Value0.232999999999999980.66999999999999990.3470.1090.2220.2070.090.384
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment213.4100.069.130.410.683.5100.0100.0

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302017-09-302017-06-302017-03-312016-09-302016-06-302015-09-30
Value1.8920.67499999999999990.520.3552.2250.2540.0910.3840.36210.2069999999999990.690.041999999999999996
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialLoan, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-06-302018-06-302017-03-312016-06-302015-09-30
Value0.4320.2490.0230.3620.68499999999999990.041999999999999996
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment222.870.19.1100.099.3100.0
us-gaap:CommercialRealEstate, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-06-302019-03-312016-09-302016-06-30
Value0.6330.01.92410.2069999999999990.005
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment233.50.086.5100.00.7
us-gaap:ConstructionLoans, us-gaap:CommercialPortfolioSegment


Period End2020-06-302019-09-302019-06-302019-03-31
Value0.4840.1590.00.062
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment225.630.60.02.8
us-gaap:ConsumerPortfolioSegment, msbi:OtherPortfolio


Period End2020-06-302019-06-302019-03-312018-06-30
Value0.00.00.0150.019
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment20.00.00.77.5
us-gaap:ResidentialRealEstate, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302017-09-302017-06-30
Value0.342999999999999970.67499999999999990.3610.1060.223999999999999980.2120.0910.384
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment218.1100.069.429.910.183.5100.0100.0

us-gaap:GainLossOnDispositionOfAssets1



Period End2020-03-312019-03-312018-03-31
Value-9000.0-7000.0-26000.0
Percentage of GainLossOnDispositionOfAssets1100.0100.0100.0

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges



Period End2020-03-312019-09-302017-06-30
Value-642000.0-3139000.0-1130000.0
Percentage of GainLossOnSalesOfAssetsAndAssetImpairmentCharges100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-06-302017-06-30
Value-60000.0-146000.00.0-1130000.0
Percentage of GainLossOnSalesOfAssetsAndAssetImpairmentCharges0.022.70.0100.0

us-gaap:GainLossOnSalesOfLoansNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value2.1783.1213.9509999999999996-8.626999999999999-8.885
Percentage of GainLossOnSalesOfLoansNet100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConsumerLoan


Period End2020-04-30
Value0.0
Percentage of GainLossOnSalesOfLoansNet0.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value15.9929999999999992.00516.07099999999999816.66999999999999821.39418.33620.86310.93315.8273.1827.7662.3164.915999999999999511.47299999999999919.90712.14710.4729999999999997.89510.5075.3799.43210.18
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value15.03699999999999912.49716.54499999999999820.0718.84399999999999811.95516.6609999999999983.275
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments94.0623.399.393.8102.8109.3105.3102.9
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1.4489999999999998-9.3899999999999990.116999999999999991.9740.251-0.251-4.3660.019-0.0230.8293.0690.2615.2172.2422.6890.33299999999999996
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments9.1-468.30.79.21.4-2.3-27.60.6-1.016.926.72.149.828.450.03.5
msbi:WealthManagement


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value2.2562.0642.6221.7321.7062.3722.6021.7791.471.041
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments14.1102.915.78.19.321.716.455.963.521.2
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-2.7489999999999997-3.166-2.614-2.3819999999999997-2.465-3.1430.79299999999999990.367-0.9159999999999999-1.011-2.467-1.184-4.75-2.6229999999999998-2.56-0.989
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-17.2-157.9-15.7-11.1-13.4-28.75.011.5-39.6-20.6-21.5-9.7-45.4-33.2-47.6-10.5

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value186000.0109000.0-1081000.0439000.0311000.0
Percentage of IncreaseDecreaseInAccruedInterestReceivableNet100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value106.386-37.882-7.2989999999999995123.1122.061999999999998
Percentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value768000.0-3739000.0-448000.02934000.02443000.0
Percentage of IncreaseDecreaseInIncomeTaxesReceivable100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInterestPayableNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value678000.01399000.01698000.0940000.0882000.0
Percentage of IncreaseDecreaseInInterestPayableNet100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value4912000.01920000.0284000.05378000.0-2071000.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-8.062-7.252-0.429-2.3899999999999997-9.275
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-06-302019-06-302016-09-302016-06-302015-09-302015-06-30
Value1074.0221434.0279570.0276785.0219115.0198557.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

msbi:OptionsAndWarrants


Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value104027.0196107.0221434.0206542.0469938.0452675.0449773.0438808.0516365.0615225.0279570.0276785.0271912.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements0.00.0100.00.00.00.00.00.00.00.0100.0100.00.0

us-gaap:InformationTechnologyAndDataProcessing



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value5.35.3345.4434.9874.89110.8174.8519999999999994.2879999999999995.7862.9492.7962.5862.62399999999999972.61999999999999972.5412.626
Percentage of InformationTechnologyAndDataProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldForSale



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1004000.0191000.0241000.0451000.0299000.0512000.0295000.0428000.0438000.0720000.0769000.0858000.0919000.0
Percentage of InterestAndFeeIncomeLoansAndLeasesHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDeposits



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value5.5598.3629.328.4377.36299999999999956.1515.0054.1173.3772.8072.38599999999999972.1892.292.2221.92099999999999981.754
Percentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseJuniorSubordinatedDebentures



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value586000.0724000.0829000.0857000.0870000.0817000.0780000.0694000.0637000.0525000.0473000.0472000.0458000.0443000.0370000.0446000.0
Percentage of InterestExpenseJuniorSubordinatedDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseShortTermBorrowings



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value28000.0101000.0212000.0210000.0237000.0213000.0116000.0124000.0100000.082000.080000.081000.068000.068000.056000.057000.0
Percentage of InterestExpenseShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseSubordinatedNotesAndDebentures



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2481000.02509000.01671000.01514000.01514000.01514000.01514000.01514000.0873000.0873000.0873000.0873000.01054000.01057000.01054000.0436000.0
Percentage of InterestExpenseSubordinatedNotesAndDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value37.37936.08243.38245.08942.00142.35845.06842.97846.43199999999999536.17899999999999529.95999999999999735.27599999999999628.94225.92799999999999723.51425.87299999999999827.3622.91625.418.73825.93823.704
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value48.98946.65099999999999648.68749.44999999999999646.07745.60148.53545.08099999999999648.28638.18499999999999536.03636.76529.427.46125.95927.26499999999999727.98899999999999724.04126.45199999999999825.43699999999999828.31724.701
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value52.0549.92752.44548.9348.51847.88751.0540.631
Percentage of InterestIncomeExpenseNet106.2107.0106.1106.2106.4106.2105.7106.4
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-0.008-0.064-0.20299999999999999-0.13799999999999998-0.176-0.177-0.0950.036-0.0790.1280.275999999999999970.2150.3490.1480.3480.521
Percentage of InterestIncomeExpenseNet-0.0-0.1-0.4-0.3-0.4-0.4-0.20.1-0.20.41.00.81.20.61.41.8
msbi:WealthManagement


Period End2020-06-302019-06-302018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.00.00.0740.0720.084999999999999990.116999999999999990.157
Percentage of InterestIncomeExpenseNet0.00.00.20.10.20.30.5
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-3.053-3.2119999999999997-2.792-2.715-2.7409999999999997-2.703-2.669-2.654-1.754-1.3299999999999998-1.1949999999999998-1.3439999999999999-1.513-1.5-1.424-0.999
Percentage of InterestIncomeExpenseNet-6.2-6.9-5.6-5.9-6.0-6.0-5.5-7.0-4.8-4.5-4.4-4.9-5.4-6.2-5.6-3.5

us-gaap:InterestIncomeFederalFundsSold



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value172000.01062000.01398000.0982000.0907000.0765000.01014000.0521000.0607000.0487000.0311000.0195000.0287000.0280000.082000.096000.0
Percentage of InterestIncomeFederalFundsSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxExempt



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value862000.0987000.01011000.01061000.01066000.01195000.01235000.01016000.0963000.0945000.0912000.0892000.0926000.0921000.0967000.0991000.0
Percentage of InterestIncomeSecuritiesTaxExempt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxable



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value3.8724.0939999999999993.72499999999999963.6063.6833.75299999999999973.7562.6431.90499999999999981.55999999999999981.45699999999999992.942.8842.90199999999999972.7842.752
Percentage of InterestIncomeSecuritiesTaxable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidNet



Period End2020-03-312019-03-312018-03-312017-03-31
Value13.98512.4319999999999996.0829999999999993.4379999999999997
Percentage of InterestPaidNet100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value20.7421.06325.08321.13422.03899999999999822.52823.46728.39522.41099999999999821.84217.11516.56799999999999817.0215.38699999999999914.93199999999999916.436999999999998
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LifeInsuranceCorporateOrBankOwnedChangeInValue



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value900000.0903000.0822000.0-580000.0-444000.0
Percentage of LifeInsuranceCorporateOrBankOwnedChangeInValue100.0100.0100.0100.0100.0

us-gaap:LoanPortfolioExpense



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value731000.0516000.0660000.0616000.0360000.0262000.0552000.0522000.0629000.0482000.0420000.0314000.0552000.0486000.0789000.0969000.0
Percentage of LoanPortfolioExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1100000.0890000.0532000.0666000.0653000.0421000.0346000.0500000.0124000.0307000.0148000.0243000.0150000.0123000.0172000.0471000.0
Percentage of LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableRelatedPartiesAdditions



Period End2020-06-302019-06-30
Value2.51.5999999999999999
Percentage of LoansAndLeasesReceivableRelatedPartiesAdditions100.0100.0

us-gaap:LoansAndLeasesReceivableRelatedPartiesProceeds



Period End2020-06-302019-06-30
Value0.390999999999999960.643
Percentage of LoansAndLeasesReceivableRelatedPartiesProceeds100.0100.0

us-gaap:LossContingencyLossInPeriod



Period End2020-06-302020-03-312019-06-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302015-09-302015-06-30
Value0.00.00.00.00.0090.0217.00.00.00.00.082999999999999990.0120.0
Percentage of LossContingencyLossInPeriod0.00.00.00.0100.0100.0100.00.00.00.0100.0100.00.0

us-gaap:MarketingExpense



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value794000.0981000.0815000.01118000.01234000.01137000.01411000.01206000.01070000.0804000.0642000.0717000.0649000.0643000.0855000.0831000.0
Percentage of MarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MortgageServicingRightsMSRImpairmentRecovery



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-03-31
Value107000.08468000.01060000.0-559000.025000.0298000.0500000.0133000.0104000.01650000.076000.02245000.0
Percentage of MortgageServicingRightsMSRImpairmentRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-06-302019-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value107000.08468000.0-559000.025000.0104000.01650000.076000.01073000.02775000.02245000.0
Percentage of MortgageServicingRightsMSRImpairmentRecovery100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:FinancialInstrument

msbi:CommercialFhaMortgageLoans


Period End2020-03-312019-03-31
Value-8500000.0-25000.0
Percentage of MortgageServicingRightsMSRImpairmentRecovery-100.4-100.0

us-gaap:NoninterestExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value40.78242.67546.32499999999999648.02540.19399999999999641.09745.37550.31746.55349.60236.19248.36337.64499999999999630.78534.09299999999999628.66330.91099999999999827.63927.69227.82330.70331.546
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value35.7537.07442.36633.80935.37099999999999543.63599999999999638.21644.366
Percentage of NoninterestExpense87.786.988.284.186.186.782.189.4
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1.9562.0942.523.0042.8113.2184.7183.5383.90999999999999973.6464.0833.51099999999999974.024.6733.7833.8649999999999998
Percentage of NoninterestExpense4.84.95.27.56.86.410.17.18.19.713.312.213.016.913.612.6
msbi:WealthManagement


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value3.44199999999999973.6133.3763.7723.2473.1462.87799999999999972.38599999999999972.1222.522
Percentage of NoninterestExpense8.48.57.09.47.96.36.24.84.46.7
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-0.366-0.106-0.237-0.39099999999999996-0.331999999999999960.3170.0161.9722.0282.121.78799999999999981.5062.19199999999999971.5141.1921.5979999999999999
Percentage of NoninterestExpense-0.9-0.2-0.5-1.0-0.80.60.04.04.25.65.85.37.15.54.35.2

us-gaap:NoninterestIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value19.3968.59799999999999919.01419.60599999999999819.58717.07521.16999999999999818.27215.94799999999999916.60513.99815.40299999999999913.61916.3330.48599999999999714.93714.02412.61799999999999912.79914.46399999999999914.19718.022
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InitialApplicationPeriodCumulativeEffectTransition

us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606


Period End2020-06-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value19.39619.58717.07518.27215.84716.50215.40299999999999913.61916.33
Percentage of NoninterestIncome100.0100.0100.0100.099.499.4100.0100.0100.0

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value10.34710.21310.8279.0258.949.8075.6819.016
Percentage of NoninterestIncome53.3118.855.246.152.453.735.654.3
msbi:CommercialFhaOriginationAndServicing


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value3.413-7.2319999999999992.845.1163.2383.14399999999999970.446999999999999953.5213.96599999999999974.34699999999999956.87599999999999943.5578.8886.76699999999999956.1243.677
Percentage of NoninterestIncome17.6-84.114.526.119.017.22.821.225.731.942.123.863.453.642.325.9
msbi:WealthManagement


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value5.69799999999999955.6775.9979999999999995.5044.9529999999999995.4445.40799999999999954.083.47499999999999963.4059999999999997
Percentage of NoninterestIncome29.466.030.628.129.029.833.924.622.625.0
us-gaap:AllOtherSegments


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-0.062-0.06-0.059-0.057999999999999996-0.055999999999999994-0.1233.47799999999999984.9929999999999992.86599999999999972.4390.5161.666-1.0450.390999999999999960.0559999999999999941.6079999999999999
Percentage of NoninterestIncome-0.3-0.7-0.3-0.3-0.3-0.721.830.118.617.93.211.2-7.53.10.411.3

us-gaap:NoninterestIncomeOther



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2.95799999999999972.8633.66799999999999972.9042.7522.8722.3713.2461.8571.44299999999999981.8752.2831.6781.9031.1791.057
Percentage of NoninterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OccupancyNet



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value4.2864.8694.7934.54.8325.044.7084.2524.1443.4723.18399999999999973.2713.23299999999999973.313.1143.3169999999999997
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost



Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value789000.0781000.0835000.0706000.0708000.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments



Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value782000.0945000.0887000.0742000.0741000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2.99099999999999971.0120.9863.6865.588-2.415-1.587-2.47799999999999980.112999999999999991.2960.428-0.1621.3212.1121.276-1.9889999999999999
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1134000.0384000.0357000.01398000.02120000.0-915000.0-595000.0-924000.094000.0822000.0273000.0-110000.0890000.01423000.0859000.0-1340000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent



Period End2020-06-302019-06-30
Value-713000.00.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent100.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent



Period End2020-06-302019-06-30
Value-983000.00.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent100.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent



Period End2020-06-302019-06-30
Value-270000.00.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent100.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2.2781.0120.9863.6865.588-2.415-1.587-2.47799999999999980.096999999999999991.2760.413-0.1451.3312.1141.255-2.016
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Period End2020-06-302019-06-30
Value2.2783.686
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax



Period End2020-06-302019-09-302019-06-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value0.00.0249999999999999980.013999999999999999-0.069999999999999990.0650.097999999999999990.0550.066999999999999990.0390.0720.2040.001
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value4.07299999999999951.3211.36799999999999995.0987.707999999999999-3.33-2.252-3.33699999999999970.3052.1730.768-0.232999999999999982.2833.7392.136-3.3289999999999997
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value3.0053.79699999999999976.29099999999999953.1262.6593.89799999999999975.0082.583.93399999999999973.35399999999999961.7831.70299999999999983.2791.781.83999999999999992.288
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRevenueExpenseFromRealEstateOperations



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-801000.0-711000.0-131000.0-101000.0-93000.0-42000.0-166000.0-90000.0-146000.0-167000.0-412000.0-179000.0-417000.0-152000.0-203000.0-256000.0
Percentage of OtherRevenueExpenseFromRealEstateOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForOriginationOfMortgageLoansHeldForSale



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value69.33284.231122.749221.78199999999998249.146
Percentage of PaymentsForOriginationOfMortgageLoansHeldForSale100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value85.972-44.3913.051136.52524.061
Percentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt



Period End2020-03-312019-03-312018-03-312017-03-31
Value50.44215.56517.389113.222
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0

us-gaap:ProceedsFromFederalHomeLoanBankBorrowings



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value100.0195.0217.0142.357300.0
Percentage of ProceedsFromFederalHomeLoanBankBorrowings100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value395000.01132000.0480000.02755000.0180000.0
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value44.24227.02326.02297.708999999999998.347
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value0.00.01.028.50.00.015.2999999999999991.6092.69999999999999975.63.058
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt0.00.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity



Period End2020-03-31
Value0.0
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesEquity0.0

us-gaap:ProceedsFromSaleOfForeclosedAssets



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value0.121.1641.6210.53999999999999991.539
Percentage of ProceedsFromSaleOfForeclosedAssets100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfMortgageLoansHeldForSale



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value73.1139999999999999.323154.01999999999998257.56205.548
Percentage of ProceedsFromSaleOfMortgageLoansHeldForSale100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

msbi:CommercialAndResidentialLoan


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value204.673.1168.5149.499.3155.0115.89999999999999154.0206.2215.39999999999998257600.0450.9250.79999999999998205500.0299.7282.8
Percentage of ProceedsFromSaleOfMortgageLoansHeldForSale0.0100.00.00.0100.00.00.0100.00.00.0100015.50.00.099976.60.00.0

us-gaap:ProfessionalFees



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1.60599999999999991.8552.3482.40999999999999972.0732.63199999999999973.57499999999999974.4994.1513.1422.9921.8771.5731.70099999999999982.07499999999999972.183
Percentage of ProfessionalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value11.6110.5689999999999995.3054.3614.0763.2433.46699999999999962.10299999999999981.85399999999999992.0066.0761.48899999999999990.457999999999999961.5332.4451.3920.6291.1251.0526.6992.3790.997
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-312019-06-302019-03-31
Value1.61599999999999993.11999999999999970.8410.27399999999999997
Percentage of ProvisionForLoanAndLeaseLosses13.929.520.68.4
msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.3160.2560.3260.32899999999999996
Percentage of ProvisionForLoanAndLeaseLosses2.72.48.010.1
msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.1530.2570.1740.514
Percentage of ProvisionForLoanAndLeaseLosses1.32.44.315.8
us-gaap:CommercialPortfolioSegment, msbi:CommercialRealEstateLoans


Period End2020-06-302020-03-312019-06-302019-03-31
Value8.3885.7552.2621.9449999999999998
Percentage of ProvisionForLoanAndLeaseLosses72.254.555.560.0
us-gaap:CommercialPortfolioSegment, msbi:ConstructionAndLandDevelopmentLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.248-0.5489999999999999-0.084999999999999990.063
Percentage of ProvisionForLoanAndLeaseLosses2.1-5.2-2.11.9
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan


Period End2020-06-302020-03-312019-06-302019-03-31
Value0.8891.730.55799999999999990.118
Percentage of ProvisionForLoanAndLeaseLosses7.716.413.73.6

us-gaap:StatementBusinessSegments

msbi:BankingSegment


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value11.6110.5689999999999994.3614.0763.2432.10299999999999981.85399999999999992.006
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

srt:BoardOfDirectorsChairman


Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value16000.017000.097000.0325000.0210000.0
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value0.19999999999999998165.196144.064129.857300.0
Percentage of RepaymentsOfFederalHomeLoanBankBorrowings100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.91599999999999990.5116.4339999999999990.18110.677
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:ServicingAssetAtAmortizedValueAdditions

msbi:CommercialFhaMortgageLoans


Period End2020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-03-31
Value657000.0526000.01350000.0213000.0176000.0911000.01001000.01432000.02107000.01481000.03506000.01702000.0
Percentage of ServicingAssetAtAmortizedValueAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:ServicingAssetAtAmortizedValueAmortization1

msbi:CommercialFhaMortgageLoans


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value815000.0728000.0684000.0675000.0678000.0633000.0682000.0676000.0650000.0639000.0639000.0592000.0582000.0567000.0
Percentage of ServicingAssetAtAmortizedValueAmortization1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate



Period End2020-03-31
Value0.1143
Percentage of ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate100.0

us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed



Period End2020-03-31
Value0.0838
Percentage of ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed100.0

us-gaap:ShorttermDebtAverageOutstandingAmount



Period End2020-03-312019-03-312018-03-312017-03-31
Value55.616135.337148.703143.583
Percentage of ShorttermDebtAverageOutstandingAmount100.0100.0100.0100.0

us-gaap:ShorttermDebtMaximumMonthendOutstandingAmount



Period End2020-03-312019-03-312018-03-312017-03-31
Value52.013138.90699999999998173.387152.813
Percentage of ShorttermDebtMaximumMonthendOutstandingAmount100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeBenefitPlan



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value363000.0395000.01658000.01109000.01132000.0577000.0873000.0480000.02755000.0180000.0
Percentage of StockIssuedDuringPeriodValueEmployeeBenefitPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value363000.0395000.01657000.01108000.01132000.0577000.0872000.0480000.02753000.0180000.0
Percentage of StockIssuedDuringPeriodValueEmployeeBenefitPlan100.0100.099.999.9100.0100.099.9100.099.9100.0

us-gaap:StockOptionPlanExpense



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value602000.0846000.0124000.0132000.0106000.0
Percentage of StockOptionPlanExpense100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue



Period End2020-06-302020-03-312019-09-30
Value7.15720.5619999999999981.8319999999999999
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-09-30
Value7.15199999999999920.5521.831
Percentage of StockRepurchasedDuringPeriodValue99.9100.099.9
us-gaap:CommonStock


Period End2020-06-302020-03-312019-09-30
Value0.0050.010.001
Percentage of StockRepurchasedDuringPeriodValue0.10.00.1

us-gaap:UndistributedEarningsDiluted



Period End2020-06-302019-09-302019-06-302018-09-302018-06-302016-06-302015-06-30
Value0.01000.01000.01000.01000.01000.01000.0
Percentage of UndistributedEarningsDiluted0.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic



Period End2020-06-302019-09-302019-06-302018-09-302018-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value65000.052000.085000.018000.044000.032000.026000.025000.018000.010000.031000.0
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersBasic



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value6.263999999999999-5.0266.66299999999999910.3959999999999998.063.2057.468999999999999-2.469-1.82799999999999980.3275.329
Percentage of UndistributedEarningsLossAvailableToCommonShareholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value6.263999999999999-5.0266.66299999999999910.3959999999999998.063.2057.468999999999999-2.469-1.82799999999999980.3275.329
Percentage of UndistributedEarningsLossAvailableToCommonShareholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowanceForImpairmentOfRecognizedServicingAssetsAggregateWriteDowns



Period End2020-06-302019-06-302016-06-302015-06-30
Value0.0559000.0208000.0954000.0
Percentage of ValuationAllowanceForImpairmentOfRecognizedServicingAssetsAggregateWriteDowns0.0100.0100.0100.0

us-gaap:ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value107000.08468000.01060000.00.025000.0298000.0500000.0133000.0104000.01650000.0188000.01073000.02983000.02245000.0795000.0
Percentage of ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:CollateralDependentLoans



Period End2020-06-302020-03-31
Value30.59699999999999829.898
Percentage of CollateralDependentLoans100.0100.0

us-gaap:Collateral, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CommercialLoan, msbi:CommercialOtherLoans


Period End2020-06-302020-03-31
Value0.3720.371
Percentage of CollateralDependentLoans1.21.2
us-gaap:CommercialRealEstate, msbi:CommercialRealEstateNonOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value8.6348.873999999999999
Percentage of CollateralDependentLoans28.229.7
us-gaap:CommercialRealEstate, msbi:CommercialRealEstateOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value5.9689999999999997.263999999999999
Percentage of CollateralDependentLoans19.524.3
us-gaap:CommercialRealEstate, srt:Multifamily


Period End2020-06-302020-03-31
Value10.27410.338
Percentage of CollateralDependentLoans33.634.6
us-gaap:ConstructionLoans, msbi:ConstructionAndLandDevelopmentLoan


Period End2020-06-302020-03-31
Value5.3482.941
Percentage of CollateralDependentLoans17.59.8
us-gaap:ResidentialRealEstate, us-gaap:RealEstateLoan


Period End2020-03-31
Value0.11
Percentage of CollateralDependentLoans0.4

us-gaap:DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensation, us-gaap:StatementScenario, us-gaap:TitleOfIndividual

msbi:DeferredCompensationArrangementSupplementalRetirementPaymentsPercentage

us-gaap:DeferredCompensationArrangementWithIndividualByTypeOfCompensationPensionAndOtherPostretirementBenefits, us-gaap:ScenarioForecast, us-gaap:ChiefExecutiveOfficer


Period End2021-12-312020-12-312019-12-31
Value0.30.40.5
Percentage of DeferredCompensationArrangementSupplementalRetirementPaymentsPercentage100.0100.0100.0

msbi:FinancingReceivableModificationsRecordedInvestmentAccruing



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value2.6653.1553.3182.81299999999999973.37299999999999983.7223.6512.1712.8682.8542.80099999999999972.3642.41212.327
Percentage of FinancingReceivableModificationsRecordedInvestmentAccruing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Collateral, us-gaap:CreditLossStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialLoan, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value0.4740.060.435
Percentage of FinancingReceivableModificationsRecordedInvestmentAccruing17.81.913.1
us-gaap:CommercialRealEstate, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value0.8341.6921.72
Percentage of FinancingReceivableModificationsRecordedInvestmentAccruing31.353.651.8
us-gaap:ConstructionLoans, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value0.0419999999999999960.0430.045
Percentage of FinancingReceivableModificationsRecordedInvestmentAccruing1.61.41.4
us-gaap:ConsumerPortfolioSegment, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-12-31
Value0.0390.0320.034999999999999996
Percentage of FinancingReceivableModificationsRecordedInvestmentAccruing1.51.01.1
us-gaap:ResidentialRealEstate, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-12-31
Value1.2761.32799999999999981.083
Percentage of FinancingReceivableModificationsRecordedInvestmentAccruing47.942.132.6

msbi:FinancingReceivableModificationsRecordedInvestmentNonaccrual



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value10.3999.84199999999999912.41813.18412.72212.52710.3629.9749.88510.06510.19715.42615.1285.625
Percentage of FinancingReceivableModificationsRecordedInvestmentNonaccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Collateral, us-gaap:CreditLossStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialLoan, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value0.68599999999999991.1810.369
Percentage of FinancingReceivableModificationsRecordedInvestmentNonaccrual6.612.03.0
us-gaap:CommercialRealEstate, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value6.4236.0329.834
Percentage of FinancingReceivableModificationsRecordedInvestmentNonaccrual61.861.379.2
us-gaap:ConstructionLoans, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value0.6320.1630.16699999999999998
Percentage of FinancingReceivableModificationsRecordedInvestmentNonaccrual6.11.71.3
us-gaap:FinanceLeasesPortfolioSegment, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-12-31
Value0.0470.0520.055
Percentage of FinancingReceivableModificationsRecordedInvestmentNonaccrual0.50.50.4
us-gaap:ResidentialRealEstate, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-12-31
Value2.61099999999999982.41399999999999971.9929999999999999
Percentage of FinancingReceivableModificationsRecordedInvestmentNonaccrual25.124.516.0

msbi:FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans



Period End2020-06-302020-03-31
Value4839.4234321.972
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans100.0100.0

us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialLoan, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-31
Value3185.15699999999972767.1459999999997
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans65.864.0

us-gaap:Collateral, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CommercialLoan, msbi:CommercialOtherLoans


Period End2020-06-302020-03-31
Value767.175440.87199999999996
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans15.910.2
us-gaap:CommercialLoan, us-gaap:CommercialLoan


Period End2020-06-302020-03-31
Value715.206647.4549999999999
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans14.815.0
us-gaap:CommercialRealEstate, msbi:CommercialRealEstateNonOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value804.1469999999999799.9889999999999
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans16.618.5
us-gaap:CommercialRealEstate, msbi:CommercialRealEstateOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value465.217459.688
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans9.610.6
us-gaap:CommercialRealEstate, msbi:FarmlandLoans


Period End2020-06-302020-03-31
Value83.62583.52199999999999
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans1.71.9
us-gaap:CommercialRealEstate, srt:Multifamily


Period End2020-06-302020-03-31
Value142.194132.213
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans2.93.1
us-gaap:ConstructionLoans, msbi:ConstructionAndLandDevelopmentLoan


Period End2020-06-302020-03-31
Value207.593203.40699999999998
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans4.34.7
us-gaap:ConsumerPortfolioSegment, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value689.312588.242
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans14.213.6
us-gaap:ConsumerPortfolioSegment, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value81.44784.682
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans1.72.0
us-gaap:FinanceLeasesPortfolioSegment, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value374.054344.591
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans7.78.0
us-gaap:ResidentialRealEstate, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value97.818104.22999999999999
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans2.02.4
us-gaap:ResidentialRealEstate, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value411.635433.08099999999996
Percentage of FinancingReceivableRecordedInvestmentPastDueExcludingNonaccrualLoans8.510.0

us-gaap:Range, us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

msbi:ImpairedFinancingReceivableMeasurementInput

srt:WeightedAverage, msbi:ImpairedLoansLoanReceivables, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, msbi:MeasurementInputDiscountRateForTypeOfPropertyAgeOfAppraisalAndCurrentStatus, us-gaap:ValuationTechniqueOptionPricingModel


Period End2020-03-312019-12-31
Value-4.5-5.22
Percentage of ImpairedFinancingReceivableMeasurementInput100.0100.0

msbi:LiabilityForUnresolvedRepurchaseDemands



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value327000.0289000.0289000.0289000.0289000.0289000.0492000.0492000.0745000.0714000.0371000.0366000.0314000.0314000.0329000.0340000.0371000.0378000.0
Percentage of LiabilityForUnresolvedRepurchaseDemands100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingenciesByNatureOfContingency

msbi:LoanCommitments

us-gaap:CommitmentsToExtendCredit


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value870.86728.472725.506714.188761.832670.694663.555706.519767.3389999999999793.012568.356605.419632.688507.221483.34499999999997504.93699999999995497.938495.506
Percentage of LoanCommitments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
us-gaap:FinancialStandbyLetterOfCredit


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value46.82655.675999999999995106.678109.752127.13499999999999140.183142.85899999999998143.025144.412142.265142.18971.61671.18462.33099999999999689.2329999999999935.60822.4331.029
Percentage of LoanCommitments5.47.614.715.416.720.921.520.218.817.925.011.811.312.318.57.14.56.3

us-gaap:FinancialInstrument

msbi:MortgageLoansServicedForOthers

msbi:CommercialFhaMortgageLoans


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value3940.04010.04080.04020.04030.03970.03980.03930.03974.46499999999974002.90699999999973976.79499999999963895.4553880.68599999999973860.183811.0663649.524
Percentage of MortgageLoansServicedForOthers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
msbi:UnitedStatesSmallBusinessAdministrationSbaLoanServicingRights


Period End2020-06-302020-03-312019-12-312019-09-30
Value45.547.848.19999999999999648.099999999999994
Percentage of MortgageLoansServicedForOthers1.21.21.21.2
us-gaap:ResidentialMortgage


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value372.7365.5381.59999999999997401.5999999999999758.599999999999994861.9897.59999999999991350.0954.86299999999991437.8541989.78499999999992053.9332085.6341828.2231833.4431826.28
Percentage of MortgageLoansServicedForOthers9.59.19.410.01.521.722.634.424.035.950.052.753.747.448.150.0

msbi:NonMarketableEquitySecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value50.76546.06844.50499999999999545.42143.17546.00942.47244.93144.27838.86799999999999534.79634.39128.89120.04719.48518.8117.38499999999999815.472
Percentage of NonMarketableEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

msbi:NonMarketableEquitySecuritiesFairValue

us-gaap:FairValueInputsLevel2


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value50.76546.06844.50499999999999545.42143.17546.00942.47244.93144.27838.86799999999999534.79628.89120.04719.48518.8117.38499999999999815.472
Percentage of NonMarketableEquitySecuritiesFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value50.76546.06844.50499999999999545.42143.17546.00942.47244.93144.27838.86799999999999534.79634.39128.89120.04719.48518.8117.38499999999999815.472
Percentage of NonMarketableEquitySecuritiesFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0
us-gaap:EstimateOfFairValueFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value50.76546.06844.50499999999999545.42143.17546.00942.47244.93144.27838.86799999999999534.79628.89120.04719.48518.8117.38499999999999815.472
Percentage of NonMarketableEquitySecuritiesFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementScenario

msbi:NumberOfBankingFacilitiesToBeClosedToHomestar

srt:ScenarioForecast


Period End2020-03-31
Value2.0
Percentage of NumberOfBankingFacilitiesToBeClosedToHomestar100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

msbi:RealEstateOwnedOtherFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-30
Value0.0
Percentage of RealEstateOwnedOtherFairValueDisclosure0.0
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-03-312016-12-312016-09-302016-06-302015-12-31
Value3156000.0909000.047000.047000.047000.01439000.042000.060000.0801000.01102000.0165000.0915000.0851000.0535000.0
Percentage of RealEstateOwnedOtherFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-30
Value0.0
Percentage of RealEstateOwnedOtherFairValueDisclosure0.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-03-312016-12-312016-09-302016-06-302015-12-31
Value3156000.0909000.047000.047000.047000.01439000.042000.060000.0801000.01102000.0165000.0915000.0851000.0535000.0
Percentage of RealEstateOwnedOtherFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

msbi:ServicingAssetAtFairValueAmountNetOfValuationAllowance



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value43.23243.49752.69352.97354.19099999999999552.95753.44699999999999651.62652.38156.42756.35256.29970.27768.55768.00864.68962.80865.4859999999999966.65165.41764.9209999999999962.781
Percentage of ServicingAssetAtFairValueAmountNetOfValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

msbi:ServicingRightsHeldForSale



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1.2441.461.9721.85999999999999990.1590.2573.5454.4194.8063.961999999999999710.17610.618
Percentage of ServicingRightsHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.00.01.85999999999999990.1590.2573.54510.176
Percentage of ServicingRightsHeldForSale0.00.0100.0100.0100.0100.0100.0
us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-12-312018-09-302018-06-30
Value1.2441.461.9724.4194.806
Percentage of ServicingRightsHeldForSale100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.2441.461.9721.85999999999999990.1590.2573.5454.4194.80610.176
Percentage of ServicingRightsHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:ResidentialMortgage


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.21.52.01.90.1590.2573.54.3999999999999995
Percentage of ServicingRightsHeldForSale96.5102.7101.4102.2100.0100.098.799.6

us-gaap:AdvancesFromFederalHomeLoanBanks



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value693.865593.0889999999999493.311559.932582.387669.009640.631652.2529999999999678.8729999999999587.4929999999999496.436488.87400.304250.35299999999998237.518237.5429999999999897.58840.178
Percentage of AdvancesFromFederalHomeLoanBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType

msbi:MidlandStatesBank, msbi:FixedRateFixedTermLoanMaturingThroughJune2023


Period End2020-06-302020-03-312019-12-312018-12-31
Value128.627.79999999999999728.087.7
Percentage of AdvancesFromFederalHomeLoanBanks18.54.75.713.7
msbi:MidlandStatesBank, msbi:FixedRateTermLoan


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
Value693.684592.908493.13552.02552.217627.414607.61617.8059999999999625.117532.126450.137237.5
Percentage of AdvancesFromFederalHomeLoanBanks100.0100.0100.098.694.893.894.894.792.190.690.7100.0
msbi:MidlandStatesBank, msbi:PutableFixedRateLoanMaturingThroughAugust2021


Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value565.0565.0465.0530.0520.0
Percentage of AdvancesFromFederalHomeLoanBanks81.495.394.394.781.2

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Period End2020-06-302019-12-312019-09-302019-03-312018-12-312017-12-31
Value0.00.072.3924.76799999999999724.6527.718
Percentage of AssetsFairValueDisclosure0.00.0100.0100.0100.0100.0
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value677.015780.014674.1859999999999688.3919999999999638.3109999999999652.0749999999999669.25474.496
Percentage of AssetsFairValueDisclosure0.00.00.0950.90.02632.72715.01711.9
us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.92099999999999990.92499999999999990.9550.92799999999999990.93499999999999991.931.92299999999999984.779
Percentage of AssetsFairValueDisclosure0.00.00.01.30.07.87.817.2

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value677.9359999999999780.939675.141761.7099999999999639.246678.773695.823506.993
Percentage of AssetsFairValueDisclosure0.00.00.01052.20.02740.52822.81829.1

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsHeldForSaleLongLivedFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-06-302016-12-31
Value2609000.03790000.03974000.04337000.01297000.01687000.01687000.01687000.02287000.03358000.01748000.01550000.0
Percentage of AssetsHeldForSaleLongLivedFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-06-302016-12-31
Value2609000.03790000.03974000.04337000.01297000.01687000.01687000.01687000.02287000.03358000.01748000.01550000.0
Percentage of AssetsHeldForSaleLongLivedFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-06-302019-12-312016-09-302016-06-302015-12-31
Value18.51811.13916.53216.36311.885
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302019-12-31
Value9.4653.368
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax51.130.2
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302019-12-31
Value1.3632.131
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax7.419.1
msbi:NonagencyMortgageBackedSecurities


Period End2020-06-302019-12-31
Value0.137999999999999980.003
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.70.0
us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-06-302019-12-31
Value0.7380.442
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax4.04.0
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-31
Value6.8145.194999999999999
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax36.846.6

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-06-302019-12-312016-09-302016-06-302015-12-31
Value2732000.0874000.01097000.0656000.01923000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302019-12-31
Value17000.0234000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.626.8
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302019-12-31
Value2708000.0554000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax99.163.4
msbi:NonagencyMortgageBackedSecurities


Period End2020-06-302019-12-31
Value0.053000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.06.1
us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-06-302019-12-31
Value0.022000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.02.5
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-31
Value7000.011000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.31.3

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-09-302016-06-302015-12-31
Value615.031644.668639.168651.7909999999999599.773647.939660.3589999999999688.909707.7679999999999727.961445.409236.777223.07399999999998226.665
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value296.52299999999997317.332321.84279.464294.43199999999996321.127329.69349.501367.48499999999996361.92699999999996233.606
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis48.249.250.442.949.149.649.950.751.949.752.4
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value142.34699999999998140.287121.15899999999999100.4192.87479.6259999999999972.3019999999999967.65263.39899999999999458.94999999999999658.903999999999996
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis23.121.819.015.415.512.310.99.89.08.113.2
msbi:NonagencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-31
Value26.19828.12117.198
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.34.42.7
us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value31.74146.42859.59999999999999467.59774.28675.6199999999999976.55476.84177.3459999999999987.7119999999999925.445
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.27.29.310.412.411.711.611.210.912.05.7
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value118.222112.5119.371131.927138.18099999999998146.557156.795169.887174.5179.3169999999999899.449
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis19.217.518.720.223.022.623.724.724.724.622.3

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value630.6899999999999656.254649.433663.0179999999999609.6569999999999652.7389999999999657.451
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value332.30699999999996353.981342.12199999999996282.794297.36199999999997321.45099999999996326.305
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate52.753.952.742.748.849.249.6

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value615.031644.668639.168651.7909999999999599.773647.939660.3589999999999
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value322.721345.453339.038279.464294.43199999999996321.127329.69
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis52.553.653.042.949.149.649.9

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-09-302016-06-302015-12-31
Value630.6899999999999656.254649.433663.0179999999999609.6569999999999652.7389999999999657.451682.396704.5849999999999726.9599999999999447.695252.212238.78099999999998236.62699999999998
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType

msbi:CorporateDebtAndEquitySecurities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, msbi:NetMarketPrice


Period End2020-06-302020-03-312019-12-31
Value0.92099999999999990.92499999999999990.955
Percentage of AvailableForSaleSecuritiesDebtSecurities0.10.10.1

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

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value139.95499999999998137.897121.78099999999999100.8429999999999992.75678.09169.62762.36158.51699999999999654.99299999999999555.032999999999994
Percentage of AvailableForSaleSecuritiesDebtSecurities22.221.018.815.215.212.010.69.18.37.612.3
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, msbi:NonagencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-31
Value26.33627.28117.148
Percentage of AvailableForSaleSecuritiesDebtSecurities4.24.22.6
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value305.971326.7324.974282.794297.36199999999997321.45099999999996326.305343.697363.061358.745232.387
Percentage of AvailableForSaleSecuritiesDebtSecurities48.549.850.042.748.849.249.650.451.549.351.9
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value32.47947.35760.01999999999999668.1349999999999974.87575.58775.68475.3729999999999976.27687.06525.211
Percentage of AvailableForSaleSecuritiesDebtSecurities5.17.29.210.312.311.611.511.010.812.05.6
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value125.02799999999999116.094124.55499999999999137.928143.72899999999998150.912159.262171.012176.779181.724102.567
Percentage of AvailableForSaleSecuritiesDebtSecurities19.817.719.220.823.623.124.225.125.125.022.9
us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.92099999999999990.92499999999999990.9550.92799999999999990.93499999999999991.931.92299999999999985.425.3569999999999994.7874.779
Percentage of AvailableForSaleSecuritiesDebtSecurities0.10.10.10.10.20.30.30.80.80.71.1

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value140.876138.822122.73599999999999101.77193.69180.02171.5567.7809999999999963.87399999999999559.77999999999999459.812
Percentage of AvailableForSaleSecuritiesDebtSecurities22.321.218.915.315.412.310.99.99.18.213.4
us-gaap:FairValueMeasurementsRecurring, msbi:NonagencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-31
Value26.33627.28117.148
Percentage of AvailableForSaleSecuritiesDebtSecurities4.24.22.6
us-gaap:FairValueMeasurementsRecurring, us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value305.971326.7324.974282.794297.36199999999997321.45099999999996326.305343.697363.061358.745232.387
Percentage of AvailableForSaleSecuritiesDebtSecurities48.549.850.042.748.849.249.650.451.549.351.9
us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value32.47947.35760.01999999999999668.1349999999999974.87575.58775.68475.3729999999999976.27687.06525.211
Percentage of AvailableForSaleSecuritiesDebtSecurities5.17.29.210.312.311.611.511.010.812.05.6
us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value125.02799999999999116.094124.55499999999999137.928143.72899999999998150.912159.262171.012176.779181.724102.567
Percentage of AvailableForSaleSecuritiesDebtSecurities19.817.719.220.823.623.124.225.125.125.022.9

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value305.971326.7324.974282.794297.36199999999997321.45099999999996326.305343.697363.061358.745232.387
Percentage of AvailableForSaleSecuritiesDebtSecurities48.549.850.042.748.849.249.650.451.549.351.9
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value140.876138.822122.73599999999999101.77193.69180.02171.5567.7809999999999963.87399999999999559.77999999999999459.812
Percentage of AvailableForSaleSecuritiesDebtSecurities22.321.218.915.315.412.310.99.99.18.213.4
msbi:NonagencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-31
Value26.33627.28117.148
Percentage of AvailableForSaleSecuritiesDebtSecurities4.24.22.6
us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value32.47947.35760.01999999999999668.1349999999999974.87575.58775.68475.3729999999999976.27687.06525.211
Percentage of AvailableForSaleSecuritiesDebtSecurities5.17.29.210.312.311.611.511.010.812.05.6
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value125.02799999999999116.094124.55499999999999137.928143.72899999999998150.912159.262171.012176.779181.724102.567
Percentage of AvailableForSaleSecuritiesDebtSecurities19.817.719.220.823.623.124.225.125.125.022.9

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueInputsLevel1


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value517.516445.097392.69399999999996407.361244.23899999999998275.93899999999996210.78240.48899999999998274.568330.233214.51899999999998180.807332.42199999999997217.658189.54299999999998227.49599999999998122.615211.976
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value517.516445.097392.69399999999996407.361244.23899999999998275.93899999999996210.78240.48899999999998274.568330.233214.51899999999998180.807332.42199999999997217.658189.54299999999998227.49599999999998122.615211.976
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
us-gaap:EstimateOfFairValueFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value517.516445.097392.69399999999996407.361244.23899999999998275.93899999999996210.78240.48899999999998274.568330.233214.51899999999998180.807332.42199999999997217.658189.54299999999998227.49599999999998122.615211.976
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndDueFromBanks



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value517.516445.097392.69399999999996407.361244.23899999999998275.93899999999996210.78240.48899999999998274.568330.233214.51899999999998180.807332.42199999999997217.658189.54299999999998227.49599999999998122.615211.976
Percentage of CashAndDueFromBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashSurrenderValueOfLifeInsurance



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value144.215143.323142.423141.51140.593139.686138.783138.6137.68099999999998136.766113.366112.591111.8019999999999974.80674.22674.27673.6649999999999952.729
Percentage of CashSurrenderValueOfLifeInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CollateralizedAgreements



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302016-06-302015-12-31
Value78.646.687.39999999999999137.4128.79999999999998123.39999999999999132.2146.4118.89999999999999129.7157.2140.0145.7140.0113.39999999999999
Percentage of CollateralizedAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

msbi:SubordinatedDebt38325MaturingJune182025


Period End2020-06-302020-03-312019-12-31
Value31.07531.07538.324999999999996
Percentage of DebtInstrumentFaceAmount100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss



Period End2020-06-302020-03-31
Value127000.075000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-30
Value0.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss0.0
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-31
Value126000.056000.00.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss99.274.70.0
msbi:NonagencyMortgageBackedSecurities


Period End2020-06-30
Value0.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss0.0
us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Period End2020-06-30
Value0.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss0.0
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302020-03-312019-12-31
Value1000.019000.00.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss0.825.30.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.6171.25511.08499999999999910.24599999999999950.104204.62205.64936.842
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.6171.2557.175.35940.366124.35799999999999126.5609999999999919.529999999999998
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.064.752.380.660.861.553.0
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.03.9153.8156.398.8048.5353.4629999999999996
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger0.035.337.212.84.34.29.4
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.00.01.07199999999999983.34816.83927.6925.888999999999999
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger0.00.010.56.78.213.516.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1000.07000.0137000.0231000.0320000.02314000.05516000.0914000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1000.07000.064000.054000.0166000.01490000.03228000.0601000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.046.723.451.964.458.565.8
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.073000.0176000.0147000.0282000.0560000.094000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.053.376.245.912.210.210.3
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.00.01000.07000.0144000.0669000.0183000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.00.42.26.212.120.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value34.88777.523115.6769999999999970.31744.14645.975244.25099999999998205.976
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value6.97699999999999910.17499999999999975.33622.89725.25699999999999813.389999999999999139.11499999999998124.192
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months20.013.165.132.657.229.157.060.3
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value27.41941.49899999999999520.26917.53818.05316.09632.6165.917
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months78.653.517.524.940.935.013.42.9
msbi:NonagencyMortgageBackedSecurities


Period End2020-03-312019-12-31
Value25.84911.059
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months33.39.6
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.4911.8132.9090.8365.42899999999999915.79099999999999929.337999999999997
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months1.41.64.11.911.86.514.2

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value887000.02169000.0737000.0368000.0321000.0223000.01445000.02467000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value16000.042000.0170000.048000.030000.026000.0528000.01500000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss1.81.923.113.09.311.736.560.8
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value865000.01287000.0481000.0307000.0287000.0186000.0575000.085000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss97.559.365.383.489.483.439.83.4
msbi:NonagencyMortgageBackedSecurities


Period End2020-03-312019-12-31
Value840000.053000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss38.77.2
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value6000.011000.010000.04000.02000.0146000.0331000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.71.52.71.20.910.113.4

us-gaap:Range, us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType

us-gaap:DebtSecuritiesAvailableForSaleMeasurementInput

srt:Maximum, msbi:CorporateDebtAndEquitySecurities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, msbi:NetMarketPrice


Period End2020-03-312019-12-31
Value2.02.5
Percentage of DebtSecuritiesAvailableForSaleMeasurementInput100.0100.0
srt:Minimum, msbi:CorporateDebtAndEquitySecurities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, msbi:NetMarketPrice


Period End2020-03-312019-12-31
Value-1.5-2.0
Percentage of DebtSecuritiesAvailableForSaleMeasurementInput-75.0-80.0
srt:WeightedAverage, msbi:CorporateDebtAndEquitySecurities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, msbi:NetMarketPrice


Period End2020-03-312019-12-31
Value-1.0-1.5
Percentage of DebtSecuritiesAvailableForSaleMeasurementInput-50.0-60.0

us-gaap:Range, us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType

srt:Maximum, msbi:CorporateDebtAndEquitySecurities, us-gaap:FairValueInputsLevel3, msbi:NetMarketPrice


Period End2020-06-302019-12-31
Value0.010.025
Percentage of DebtSecuritiesAvailableForSaleMeasurementInput0.01.0
srt:WeightedAverage, msbi:CorporateDebtAndEquitySecurities, us-gaap:FairValueInputsLevel3, msbi:NetMarketPrice


Period End2020-06-302019-12-31
Value-0.010.015
Percentage of DebtSecuritiesAvailableForSaleMeasurementInput0.00.6

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value35.50478.77799999999999126.76280.56394.25250.595449.9242.81799999999998
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.59399999999999911.4382.50628.25665.62299999999999137.748265.676143.72199999999998
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition21.414.565.135.169.655.059.159.2
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value27.41941.49899999999999524.18399999999999721.35299999999999824.44299999999999824.941.1509999999999969.379999999999999
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition77.252.719.126.525.99.99.13.9
msbi:NonagencyMortgageBackedSecurities


Period End2020-03-312019-12-31
Value25.84911.059
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition32.88.7
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.4911.8133.9814.18422.26843.48335.227
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition1.41.44.94.48.99.714.5

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value888000.02176000.0874000.0599000.0641000.02537000.06961000.03381000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

msbi:AgencyMortgageBackedSecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value17000.049000.0234000.0102000.0196000.01516000.03756000.02101000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss1.92.326.817.030.659.854.062.1
msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value865000.01287000.0554000.0483000.0434000.0468000.01135000.0179000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss97.459.163.480.667.718.416.35.3
msbi:NonagencyMortgageBackedSecurities


Period End2020-03-312019-12-31
Value840000.053000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss38.66.1
us-gaap:USStatesAndPoliticalSubdivisions


Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value6000.011000.011000.011000.0146000.0815000.0514000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.71.31.81.75.811.715.2

us-gaap:DeferredDiscountsFinanceChargesAndInterestIncludedInReceivables



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value43.840.139.630.734.19999999999999632.929.225.423.523.220.721.220.820.719.719.415.7
Percentage of DeferredDiscountsFinanceChargesAndInterestIncludedInReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Deposits



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4943.1074650.6399999999994544.2544445.1709999999994011.2074036.2884074.16999999999964143.2064159.8574233.8153131.0893114.46699999999963333.0312527.4762404.3662420.03199999999972354.55199999999972367.6479999999997
Percentage of Deposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DepositsFairValueDisclosure

us-gaap:FairValueInputsLevel2


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4954.4659999999994661.3754548.3274450.5894016.50299999999974034.4534069.0984134.3809999999994150.98399999999954223.0483127.62599999999973112.54099999999973330.8552526.13699999999972404.23099999999982422.2952359.0262371.397
Percentage of DepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4943.1074650.6399999999994544.2544445.1709999999994011.2074036.2884074.16999999999964143.2064159.8574233.8153131.0893114.46699999999963333.0312527.4762404.3662420.03199999999972354.55199999999972367.6479999999997
Percentage of DepositsFairValueDisclosure99.899.899.999.999.9100.0100.1100.2100.2100.3100.1100.1100.1100.1100.099.999.899.8
us-gaap:EstimateOfFairValueFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4954.4659999999994661.3754548.3274450.5894016.50299999999974034.4534069.0984134.3809999999994150.98399999999954223.0483127.62599999999973112.54099999999973330.8552526.13699999999972404.23099999999982422.2952359.0262371.397
Percentage of DepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:ForwardContracts


Period End2020-06-302019-12-31
Value265000.00.0
Percentage of DerivativeAssetFairValueGrossLiability100.00.0

us-gaap:DerivativeAssetNotionalAmount



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-06-302016-12-312015-12-31
Value464.519436.875443.70599999999996423.98199999999997366.842549.558541.581717.9760.126566.1469999999999257.02299999999997
Percentage of DerivativeAssetNotionalAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:ForwardContracts


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value215.581197.756221.052209.505183.28274.234276.871372.82399999999996301.788
Percentage of DerivativeAssetNotionalAmount46.445.349.849.450.049.951.151.953.3
us-gaap:InterestRateLockCommitments


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312016-09-302016-06-302015-12-31
Value248.938239.119222.654214.477183.56199999999998275.324264.71345.152264.359294.01476.671257.02299999999997
Percentage of DerivativeAssetNotionalAmount53.654.750.250.650.050.148.948.146.70.00.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

msbi:FutureStartingReceiveFixedPayVariableInterestRateSwaps, us-gaap:CashFlowHedging


Period End2020-06-30
Value140.0
Percentage of DerivativeAssetNotionalAmount30.1
msbi:ReceiveFixedPayVariableInterestRateSwaps, us-gaap:CashFlowHedging


Period End2020-06-30
Value100.0
Percentage of DerivativeAssetNotionalAmount21.5

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

us-gaap:DerivativeAssets

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:InterestRateLockCommitments


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4.8984.3053.34999999999999964.3039999999999993.7915.7524.4925.5034.3279999999999996.386.33099999999999956.4209999999999997.3968.0236.2536.79812.1746.029
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:InterestRateSwap


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.9420.8880.3060.453999999999999960.2860.0180.1450.389999999999999960.3060.2190.0169999999999999980.1210.126
Percentage of DerivativeAssets19.220.69.110.57.50.33.27.17.13.40.31.91.7

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:InterestRateLockCommitments


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4.8984.3053.34999999999999964.3039999999999993.7915.7524.4925.5034.3279999999999996.386.33099999999999956.4209999999999997.3968.0236.2536.79812.1746.029
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
us-gaap:FairValueMeasurementsRecurring, us-gaap:InterestRateSwap


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.9420.8880.3060.453999999999999960.2860.0180.1450.389999999999999960.3060.2190.0169999999999999980.1210.126
Percentage of DerivativeAssets19.220.69.110.57.50.33.27.17.13.40.31.91.7

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:Position

us-gaap:DerivativeAverageVariableInterestRate

msbi:ReceiveFixedPayVariableInterestRateSwaps, us-gaap:CashFlowHedging, us-gaap:Long


Period End2020-06-30
Value0.0057
Percentage of DerivativeAverageVariableInterestRate100.0
msbi:ReceiveFixedPayVariableInterestRateSwaps, us-gaap:CashFlowHedging, us-gaap:Short


Period End2020-06-30
Value0.003
Percentage of DerivativeAverageVariableInterestRate52.6

us-gaap:DerivativeFairValueOfDerivativeAsset



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value4.8984.3053.34999999999999964.3039999999999993.7915.7524.4926.3626.3786.029
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:OtherAssets, us-gaap:InterestRateSwap


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.9420.8880.3060.453999999999999960.2860.0180.1450.389999999999999960.3060.2190.0169999999999999980.121
Percentage of DerivativeFairValueOfDerivativeAsset19.220.69.110.57.50.33.20.00.00.00.30.0

us-gaap:DerivativeInstrumentRisk

us-gaap:ForwardContracts


Period End2020-06-302019-12-312017-12-312016-12-31
Value0.00.00.0310.125
Percentage of DerivativeFairValueOfDerivativeAsset0.00.00.52.0
us-gaap:InterestRateLockCommitments


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312016-09-302016-06-302015-12-31
Value4.8984.3053.34999999999999964.3039999999999993.7915.7524.4926.33099999999999956.2536.79812.1746.029
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.099.598.00.00.0100.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:DerivativeLiabilities

us-gaap:OtherLiabilities, us-gaap:CashFlowHedging


Period End2020-06-30
Value983000.0
Percentage of DerivativeLiabilities100.0

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

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:InterestRateSwap


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-09-302016-06-302015-12-31
Value1925000.0888000.0306000.0454000.0286000.018000.0145000.0390000.0306000.0219000.017000.0121000.0126000.032000.065000.0126000.0
Percentage of DerivativeLiabilities195.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:InterestRateSwap


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-09-302016-06-302015-12-31
Value1925000.0888000.0306000.0454000.0286000.018000.0145000.0390000.0306000.0219000.017000.0121000.0126000.032000.065000.0126000.0
Percentage of DerivativeLiabilities195.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilityNotionalAmount

us-gaap:ForwardContracts


Period End2020-06-302019-12-312019-03-312018-12-312016-06-302015-12-31
Value39.8099999999999950.00.066999999999999990.054550.947278.313
Percentage of DerivativeLiabilityNotionalAmount100.00.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNotionalAmount

us-gaap:InterestRateSwap


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value8700000.08800000.09000000.09100000.09200000.09500000.0
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations

us-gaap:FairValueInputsLevel2


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value161.339160.344182.189193.85893.76195.52691.92660.99161.08099999999999691.87290.8650.05549.96649.73649.69250.2650.31899999999999658.198
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value169.60999999999999169.505176.653192.68994.2149999999999994.1739999999999994.13494.0929999999999994.05394.0129999999999993.97254.58099999999999654.55654.53254.50799999999999654.48399999999999554.45899999999999661.858999999999995
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations105.1105.797.099.4100.598.6102.4154.3154.0102.3103.4109.0109.2109.6109.7108.4108.2106.3
us-gaap:EstimateOfFairValueFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value161.339160.344182.189193.85893.76195.52691.92660.99161.08099999999999691.87290.8650.05549.96649.73649.69250.2650.31899999999999658.198
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

msbi:CorporateDebtAndEquitySecurities


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0.92099999999999990.92499999999999990.9550.92799999999999990.93499999999999991.931.92299999999999985.425.3569999999999994.7874.7794.7494.747.7347.4799999999999995
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueOptionLoansHeldAsAssetsAggregateDifference



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
Value1454000.0715000.0652000.0606000.0665000.0589000.01079000.01022000.01116000.0491000.0717000.01308000.0
Percentage of FairValueOptionLoansHeldAsAssetsAggregateDifference100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


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
Value324000.048000.0206000.0132000.0301000.0267000.0595000.0238000.0369000.0108000.0343000.0993000.0
Percentage of FairValueOptionLoansHeldAsAssetsAggregateDifference22.36.731.621.845.345.355.123.333.122.047.875.9
us-gaap:ResidentialPortfolioSegment


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
Value1130000.0667000.0446000.0474000.0364000.0322000.0484000.0784000.0747000.0383000.0374000.0315000.0
Percentage of FairValueOptionLoansHeldAsAssetsAggregateDifference77.793.368.478.254.754.744.976.766.978.052.224.1

us-gaap:FederalFundsSold



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2352000.04299000.01811000.01985000.01176000.0541000.02920000.01944000.01763000.0950000.0683000.02765000.01934000.0438000.01173000.0534000.0751000.0499000.0
Percentage of FederalFundsSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure

us-gaap:FairValueInputsLevel1


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2352000.04299000.01811000.01985000.01176000.0541000.02920000.01944000.01763000.0950000.0683000.02765000.01934000.0438000.01173000.0534000.0751000.0499000.0
Percentage of FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2352000.04299000.01811000.01985000.01176000.0541000.02920000.01944000.01763000.0950000.0683000.02765000.01934000.0438000.01173000.0534000.0751000.0499000.0
Percentage of FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
us-gaap:EstimateOfFairValueFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2352000.04299000.01811000.01985000.01176000.0541000.02920000.01944000.01763000.0950000.0683000.02765000.01934000.0438000.01173000.0534000.0751000.0499000.0
Percentage of FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-03-312016-12-312016-09-302016-06-302015-12-31
Value1930.01950.01940.01950.02010.02110.02220.02220.02050.02010.01860.01240.01180.01150.01100.0987.4
Percentage of FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresInterestRateAtPeriodEnd

msbi:MidlandStatesBank, msbi:FixedRateFixedTermLoanMaturingThroughJune2023


Period End2020-06-302020-03-312019-12-312018-12-31
Value0.00720.02560.02560.0235
Percentage of FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresInterestRateAtPeriodEnd100.0100.0100.0100.0
msbi:MidlandStatesBank, msbi:PutableFixedRateLoanMaturingThroughAugust2021


Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value0.02020.02020.02340.02150.0209
Percentage of FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresInterestRateAtPeriodEnd280.678.991.40.088.9

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FederalHomeLoanBankBorrowingsFairValueDisclosure

us-gaap:FairValueInputsLevel2


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value730.284631.4499999999999506.832575.159594.404674.353641.05648.967676.632584.597494.63399999999996488.19599999999997399.365249.804236.736237.89698.18740.053999999999995
Percentage of FederalHomeLoanBankBorrowingsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value693.865593.0889999999999493.311559.932582.387669.009640.631652.2529999999999678.8729999999999587.4929999999999496.436488.87400.304250.35299999999998237.518237.5429999999999897.58840.178
Percentage of FederalHomeLoanBankBorrowingsFairValueDisclosure95.093.997.397.498.099.299.9100.5100.3100.5100.4100.1100.2100.2100.399.999.4100.3
us-gaap:EstimateOfFairValueFairValueDisclosure


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value730.284631.4499999999999506.832575.159594.404674.353641.05648.967676.632584.597494.63399999999996488.19599999999997399.365249.804236.736237.89698.18740.053999999999995
Percentage of FederalHomeLoanBankBorrowingsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FinancialLiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Period End2020-06-30
Value0.0
Percentage of FinancialLiabilitiesFairValueDisclosure0.0
us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Period End2020-06-30
Value2190000.0
Percentage of FinancialLiabilitiesFairValueDisclosure0.0
us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Period End2020-06-30
Value0.0
Percentage of FinancialLiabilitiesFairValueDisclosure0.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Period End2020-06-30
Value2190000.0
Percentage of FinancialLiabilitiesFairValueDisclosure0.0

us-gaap:FinancingReceivableModificationsRecordedInvestment



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value13.06412.99715.73599999999999915.99716.09516.24914.01312.14512.75312.91899999999999912.99817.7917.5417.951999999999998
Percentage of FinancingReceivableModificationsRecordedInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Collateral, us-gaap:CreditLossStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialLoan, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value1.161.24099999999999990.8039999999999999
Percentage of FinancingReceivableModificationsRecordedInvestment8.99.55.1
us-gaap:CommercialRealEstate, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value7.2577.72399999999999911.554
Percentage of FinancingReceivableModificationsRecordedInvestment55.559.473.4
us-gaap:ConstructionLoans, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value0.67399999999999990.2060.212
Percentage of FinancingReceivableModificationsRecordedInvestment5.21.61.3
us-gaap:ConsumerPortfolioSegment, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-12-31
Value0.0390.0320.034999999999999996
Percentage of FinancingReceivableModificationsRecordedInvestment0.30.20.2
us-gaap:FinanceLeasesPortfolioSegment, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-12-31
Value0.0470.0520.055
Percentage of FinancingReceivableModificationsRecordedInvestment0.40.40.3
us-gaap:ResidentialRealEstate, msbi:ReceivablesExcludingAcquiredWithDeterioratedCreditQuality, msbi:OtherPortfolio


Period End2020-06-302020-03-312019-12-31
Value3.8873.7423.076
Percentage of FinancingReceivableModificationsRecordedInvestment29.828.819.5

us-gaap:FinancingReceivableNonaccrualNoAllowance



Period End2020-06-302020-03-312019-12-31
Value16.61815.34715.133999999999999
Percentage of FinancingReceivableNonaccrualNoAllowance100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-312019-12-31
Value15.76499999999999914.55811.683
Percentage of FinancingReceivableNonaccrualNoAllowance94.994.977.2

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

msbi:CommercialOtherLoans


Period End2020-06-302020-03-312019-12-31
Value0.3710.3711.519
Percentage of FinancingReceivableNonaccrualNoAllowance2.22.410.0
msbi:CommercialRealEstateNonOwnerOccupiedLoans


Period End2020-06-302020-03-312019-12-31
Value4.2644.4894.572
Percentage of FinancingReceivableNonaccrualNoAllowance25.729.330.2
msbi:CommercialRealEstateOwnerOccupiedLoans


Period End2020-06-302020-03-312019-12-31
Value5.14999999999999956.61299999999999952.6479999999999997
Percentage of FinancingReceivableNonaccrualNoAllowance31.043.117.5
msbi:ConstructionAndLandDevelopmentLoan


Period End2020-06-302020-03-312019-12-31
Value3.6210.6931.2449999999999999
Percentage of FinancingReceivableNonaccrualNoAllowance21.84.58.2
msbi:FarmlandLoans


Period End2020-06-302019-12-31
Value0.00.15
Percentage of FinancingReceivableNonaccrualNoAllowance0.01.0
msbi:LeaseFinancingReceivable


Period End2020-06-302019-12-31
Value0.00.11599999999999999
Percentage of FinancingReceivableNonaccrualNoAllowance0.00.8
msbi:OtherResidentialLoans


Period End2020-06-302019-12-31
Value0.00.9119999999999999
Percentage of FinancingReceivableNonaccrualNoAllowance0.06.0
srt:Multifamily


Period End2020-06-302020-03-312019-12-31
Value2.3592.3921.43
Percentage of FinancingReceivableNonaccrualNoAllowance14.215.69.4
us-gaap:CommercialLoan


Period End2020-06-302019-12-31
Value0.00.119
Percentage of FinancingReceivableNonaccrualNoAllowance0.00.8
us-gaap:ConsumerLoan


Period End2020-06-302019-12-31
Value0.00.006999999999999999
Percentage of FinancingReceivableNonaccrualNoAllowance0.00.0
us-gaap:RealEstateLoan


Period End2020-06-302020-03-312019-12-31
Value0.8530.78899999999999992.416
Percentage of FinancingReceivableNonaccrualNoAllowance5.15.116.0

us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value7.6629999999999997.656
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear100.0100.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value86.05395.91
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1123.01252.7

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

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value0.1550.128
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.01.7
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value0.190.19899999999999998
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2.52.6
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value0.1430.178
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.92.3
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value7.1757.151
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear93.693.4
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value4.2766.399
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear55.883.6
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value3.0042.249
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear39.229.4
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value2.4682.746
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear32.235.9
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value6.4789.753
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear84.5127.4
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value69.82774.76299999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear911.2976.5

us-gaap:FinancingReceivablePortfolioSegment

msbi:ConstructionAndLandDevelopmentSegmentPortfolio


Period End2020-06-302020-03-31
Value14.50116.192
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear189.2211.5
msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value93.716103.56599999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1223.01352.7
us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-31
Value569.0509999999999633.334
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear7426.08272.4

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value4.4316.527
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear57.885.3
msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value3.0042.249
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear39.229.4
msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value2.6582.945
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear34.738.5
msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value6.62099999999999969.931
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear86.4129.7
msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value77.00281.914
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1004.91069.9
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans


Period End2020-06-302020-03-31
Value0.93299999999999991.27
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear12.216.6
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan


Period End2020-06-302020-03-31
Value69.16973.74199999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear902.6963.2
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value250.357279.09
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear3267.13645.4
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value164.886188.417
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2151.72461.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans


Period End2020-06-302020-03-31
Value34.51699999999999638.622
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear450.4504.5
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily


Period End2020-06-302020-03-31
Value34.68799999999999536.001
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear452.7470.2

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

us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value0.00.012
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.2
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value0.92899999999999991.253
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear12.116.4
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:SpecialMention


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value0.0040.005
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.1
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value0.4930.514
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear6.46.7
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Pass


Period End2020-06-302020-03-31
Value57.10764.28099999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear745.2839.6
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value6.9849999999999994.314
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear91.256.3
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Substandard


Period End2020-06-302020-03-31
Value4.5844.633
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear59.860.5
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value5.8955.577
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear76.972.8
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value188.22199999999998252.159
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear2456.23293.6
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value36.06510.647
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear470.6139.1
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value20.17510.706999999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear263.3139.9
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value7.9439.962
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear103.7130.1
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value118.955150.209
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1552.31962.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value16.0099999999999988.538
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear208.9111.5
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value21.97799999999999819.708
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear286.8257.4
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value31.51199999999999736.196
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear411.2472.8
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value1.060.27999999999999997
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear13.83.7
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value1.94499999999999982.146
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear25.428.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value2.4852.528
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear32.433.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Pass


Period End2020-06-302020-03-31
Value28.74932.045
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear375.2418.6
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value1.3371.3479999999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear17.417.6
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Substandard


Period End2020-06-302020-03-31
Value2.1170.08
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear27.61.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

msbi:ConstructionAndLandDevelopmentSegmentPortfolio, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value4.7614.803999999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear62.162.7
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Pass


Period End2020-06-302020-03-31
Value8.2199.022
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear107.3117.8
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value0.6031.4469999999999998
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear7.918.9
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Substandard


Period End2020-06-302020-03-31
Value0.91799999999999990.9189999999999999
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear12.012.0
us-gaap:CommercialPortfolioSegment, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value21.57699999999999823.397
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear281.6305.6
us-gaap:CommercialPortfolioSegment, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:Pass


Period End2020-06-302020-03-31
Value433.693545.165
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear5659.67120.8
us-gaap:CommercialPortfolioSegment, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value62.05999999999999526.573999999999998
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear809.9347.1
us-gaap:CommercialPortfolioSegment, us-gaap:Substandard


Period End2020-06-302020-03-31
Value51.72138.198
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear674.9498.9

us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value1.22099999999999991.3399999999999999
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear100.0100.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value145.41159.14
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear11909.111876.1

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

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value0.5040.533
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear41.339.8
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value0.081999999999999990.10099999999999999
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear6.77.5
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value0.6270.698
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear51.452.1
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value20.50699999999999824.105999999999998
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1679.51799.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value14.06899999999999914.943
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1152.31115.1
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value1.711.8719999999999999
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear140.0139.7
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value9.02411.131
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear739.1830.7
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value100.1107.088
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear8198.27991.6

us-gaap:FinancingReceivablePortfolioSegment

msbi:ConstructionAndLandDevelopmentSegmentPortfolio


Period End2020-06-302020-03-31
Value2.85.301
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear229.3395.6
msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value146.631160.48
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear12009.111976.1
us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-31
Value306.445324.03
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear25097.924181.3

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value21.01124.639
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1720.81838.7
msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value14.06899999999999914.943
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1152.31115.1
msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value1.7181.88
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear140.7140.3
msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value9.10611.232
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear745.8838.2
msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value100.72699999999999107.786
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear8249.58043.7
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans


Period End2020-06-302020-03-31
Value0.6020.647
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear49.348.3
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan


Period End2020-06-302020-03-31
Value32.92939.955999999999996
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2696.92981.8
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value150.683151.988
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear12341.011342.4
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value80.38783.079
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear6583.76199.9
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans


Period End2020-06-302020-03-31
Value8.1538.089
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear667.7603.7
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily


Period End2020-06-302020-03-31
Value30.89134.97
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2530.02609.7

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

us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value0.5040.5369999999999999
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear41.340.1
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value0.0339999999999999960.046
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2.83.4
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value0.4250.433
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear34.832.3
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Pass


Period End2020-06-302020-03-31
Value31.75099999999999839.003
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2600.42910.7
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value0.4170.431
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear34.232.2
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Substandard


Period End2020-06-302020-03-31
Value0.335999999999999970.089
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear27.56.6
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value3.4733.4949999999999997
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear284.4260.8
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value126.66499999999999147.992
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear10373.911044.2
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value20.0709999999999980.027
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1643.82.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value0.030.033
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2.52.5
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value74.3977.37899999999999
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear6092.55774.6
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value4.0823.037
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear334.3226.6
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value1.8852.63
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear154.4196.3
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value6.9418.071
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear568.5602.3
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value1.1940.018
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear97.81.3
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Substandard


Period End2020-06-30
Value0.018
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1.5
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value7.92399999999999958.029
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear649.0599.2
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Pass


Period End2020-06-302020-03-31
Value18.98099999999999822.933
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1554.51711.4
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:SpecialMention


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Substandard


Period End2020-06-302020-03-31
Value3.98599999999999984.008
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear326.5299.1

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

msbi:ConstructionAndLandDevelopmentSegmentPortfolio, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value0.1480.15
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear12.111.2
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Pass


Period End2020-06-302020-03-31
Value2.65199999999999975.151
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear217.2384.4
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:SpecialMention


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Substandard


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:SubstandardNonaccrual


Period End2020-06-302020-03-31
Value12.04912.189
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear986.8909.6
us-gaap:CommercialPortfolioSegment, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:Pass


Period End2020-06-302020-03-31
Value261.884301.066
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear21448.322467.6
us-gaap:CommercialPortfolioSegment, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value25.7793.528
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2111.3263.3
us-gaap:CommercialPortfolioSegment, us-gaap:Substandard


Period End2020-06-302020-03-31
Value6.7337.247
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear551.4540.8

us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-30
Value0.006999999999999999
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value442.69599999999997197.07
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear6324228.60.0

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

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-30
Value0.006999999999999999
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value92.6829999999999944.905
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1324042.90.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value324.077146.912
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear4629671.40.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value0.224999999999999980.242
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3214.30.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value11.2112.9699999999999998
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear160157.10.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value14.52.041
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear207142.90.0

us-gaap:FinancingReceivablePortfolioSegment

msbi:ConstructionAndLandDevelopmentSegmentPortfolio


Period End2020-06-302020-03-31
Value18.3832.604
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear262614.30.0
msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value442.703197.07
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear6324328.60.0
us-gaap:CommercialPortfolioSegment


Period End2020-06-302020-03-31
Value586.9739999999999156.07999999999998
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8385342.90.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value92.6829999999999944.905
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1324042.90.0
msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value324.077146.912
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear4629671.40.0
msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value0.224999999999999980.242
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3214.30.0
msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value11.2182.9699999999999998
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear160257.10.0
msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value14.52.041
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear207142.90.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans


Period End2020-06-302020-03-31
Value411.75263.824
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear5882171.40.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan


Period End2020-06-302020-03-31
Value46.16399999999999437.189
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear659485.70.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value51.59999999999999422.322
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear737142.90.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans


Period End2020-06-302020-03-31
Value47.84527.644
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear683500.00.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans


Period End2020-06-302020-03-31
Value11.21.702
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear160000.00.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily


Period End2020-06-302020-03-31
Value0.030.7949999999999999
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear428.60.0

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

us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, msbi:NotGraded


Period End2020-06-302020-03-31
Value0.1720.061
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear2457.10.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value401.16663.535
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear5730942.90.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value7.1720.152
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear102457.10.0
us-gaap:CommercialPortfolioSegment, msbi:CommercialOtherLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value3.2420.076
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear46314.30.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Pass


Period End2020-06-302020-03-31
Value45.56136.244
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear650871.40.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value0.6030.945
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8614.30.0
us-gaap:CommercialPortfolioSegment, us-gaap:CommercialLoan, us-gaap:Substandard


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value44.11421.416
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear630200.00.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:SpecialMention


Period End2020-06-30
Value6.585
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear94071.4
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateNonOwnerOccupiedLoans, us-gaap:Substandard


Period End2020-06-302020-03-31
Value0.90099999999999990.9059999999999999
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear12871.40.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value46.47927.644
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear663985.70.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:SpecialMention


Period End2020-06-30
Value1.3659999999999999
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear19514.3
us-gaap:CommercialRealEstatePortfolioSegment, msbi:CommercialRealEstateOwnerOccupiedLoans, us-gaap:Substandard


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Pass


Period End2020-06-302020-03-31
Value7.251.702
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear103571.40.0
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:SpecialMention


Period End2020-06-30
Value0.368
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear5257.1
us-gaap:CommercialRealEstatePortfolioSegment, msbi:FarmlandLoans, us-gaap:Substandard


Period End2020-06-30
Value3.582
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear51171.4
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, msbi:NotGraded


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Pass


Period End2020-06-302020-03-31
Value0.030.7949999999999999
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear428.60.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:SpecialMention


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialRealEstatePortfolioSegment, srt:Multifamily, us-gaap:Substandard


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

msbi:ConstructionAndLandDevelopmentSegmentPortfolio, msbi:NotGraded


Period End2020-06-30
Value0.236
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3371.4
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Pass


Period End2020-06-302020-03-31
Value16.7612.604
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear239442.90.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:SpecialMention


Period End2020-06-30
Value1.386
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear19800.0
msbi:ConstructionAndLandDevelopmentSegmentPortfolio, us-gaap:Substandard


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, msbi:NotGraded


Period End2020-06-302020-03-31
Value0.4080.061
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear5828.60.0
us-gaap:CommercialPortfolioSegment, msbi:SubstandardNonaccrual


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:Doubtful


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0
us-gaap:CommercialPortfolioSegment, us-gaap:Pass


Period End2020-06-302020-03-31
Value561.361153.94
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8019442.90.0
us-gaap:CommercialPortfolioSegment, us-gaap:SpecialMention


Period End2020-06-302020-03-31
Value17.481.097
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear249714.30.0
us-gaap:CommercialPortfolioSegment, us-gaap:Substandard


Period End2020-06-302020-03-31
Value7.7250.982
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear110357.10.0

us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value0.65999999999999990.216
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear100.0100.0
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio


Period End2020-06-302020-03-31
Value457.947537.577
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear69385.9248878.2

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

us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value0.5070.062
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear76.828.7
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-30
Value0.0
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value0.030.028999999999999998
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear4.513.4
us-gaap:NonperformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value0.1080.11
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear16.450.9
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:LeaseFinancingReceivable


Period End2020-06-302020-03-31
Value140.755147.05599999999998
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear21326.568081.5
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherConsumerLoans


Period End2020-06-302020-03-31
Value266.95099999999996337.739
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear40447.1156360.6
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, msbi:OtherResidentialLoans


Period End2020-06-302020-03-31
Value3.3563.235
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear508.51497.7
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:ConsumerLoan


Period End2020-06-302020-03-31
Value17.94899999999999819.553
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2719.59052.3
us-gaap:PerformingFinancingReceivable, msbi:OtherPortfolio, us-gaap:RealEstateLoan


Period End2020-06-302020-03-31
Value28.93629.994
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear4384.213886.1

us-gaap:FinancingRecei