$MSBI
Midland States Bancorp Inc Stock $msbi

$msbi Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000146602624000009 Filed on February 23, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.231M	$3.030M	$4.800M
YoY Change	2.58%	16.45%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$45.76M		$168.3M
YoY Change	30.6%		200.39%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$18.24M	$20.51M	$107.6M
YoY Change	-36.37%	-53.28%	-17.15%
Income Tax	$4.355M	$6.441M	$32.11M
% Of Pretax Income	23.88%	31.4%	29.85%
Net Earnings	$13.89M	$11.58M	$75.46M
YoY Change	-36.23%	-60.53%	-23.8%
Net Earnings / Revenue
Basic Earnings Per Share	$0.53		$2.97
Diluted Earnings Per Share	$0.53	$0.53	$2.97
COMMON SHARES
Basic Shares Outstanding	21.50M shares	21.54M shares	22.12M shares
Diluted Shares Outstanding	21.79M shares		22.12M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.208B	$1.051B
YoY Change	27.05%	14.41%
Cash & Equivalents	$167.3M	$135.1M
Short-Term Investments	$1.040B	$915.9M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$81.83M	$82.81M	$82.81M
YoY Change	1.55%	5.77%	5.77%
Goodwill	$161.9M	$161.9M
YoY Change	0.0%	0.0%
Intangibles	$15.02M	$16.11M
YoY Change	-23.27%	-22.8%
Long-Term Investments	$33.48M	$43.42M	$43.42M
YoY Change	-36.99%	-6.02%	-6.02%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$7.832B	$7.867B	$7.867B
YoY Change	-1.24%	0.14%	0.14%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$103.0M	$110.5M	$110.5M
YoY Change	55.6%	37.7%	37.7%
Deferred Revenue
YoY Change
Short-Term Debt	$214.4M	$34.87M	$34.87M
YoY Change	587.92%	-17.6%	-17.6%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$317.4M	$145.3M	$145.3M
YoY Change	226.07%	81.16%	81.16%
LONG-TERM LIABILITIES
Long-Term Debt	$144.4M	$144.2M	$144.2M
YoY Change	-3.72%	-3.73%	-3.73%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$144.4M	$144.2M	$144.2M
YoY Change	-3.72%	-3.73%	-3.73%
TOTAL LIABILITIES
Total Short-Term Liabilities	$317.4M	$145.3M	$145.3M
Total Long-Term Liabilities	$144.4M	$144.2M	$144.2M
Total Liabilities	$7.041B	$7.075B	$7.075B
YoY Change	-1.59%	-0.31%	-0.31%
SHAREHOLDERS EQUITY
Retained Earnings	$327.3M	$322.4M
YoY Change	10.86%	14.15%
Common Stock	$215.0K	$216.0K
YoY Change	-2.71%	-2.7%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$791.0M	$791.9M	$791.9M
YoY Change
Total Liabilities & Shareholders Equity	$7.832B	$7.867B	$7.867B
YoY Change	-1.24%	0.14%	0.14%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$13.89M	$11.58M	$75.46M
YoY Change	-36.23%	-60.53%	-23.8%
Depreciation, Depletion And Amortization	$1.231M	$3.030M	$4.800M
YoY Change	2.58%	16.45%	0.0%
Cash From Operating Activities	$26.92M	$87.36M	$154.6M
YoY Change	68.15%	184.7%	-34.68%
INVESTING ACTIVITIES
Capital Expenditures	$527.0K	$1.667M	$8.731M
YoY Change	-81.1%	20.62%	151.61%
Acquisitions			$0.00
YoY Change			-100.0%
Other Investing Activities	$43.60M	$69.44M	-$67.35M
YoY Change	-145.59%	-135.33%	-93.85%
Cash From Investing Activities	$43.07M	$67.77M	-$76.08M
YoY Change	-143.76%	-134.24%	-93.08%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$17.90M
YoY Change			1513.89%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$37.73M	-152.2M	-$104.1M
YoY Change	-162.8%	-3585.91%	-131.36%
NET CHANGE
Cash From Operating Activities	$26.92M	87.36M	$154.6M
Cash From Investing Activities	$43.07M	67.77M	-$76.08M
Cash From Financing Activities	-$37.73M	-152.2M	-$104.1M
Net Change In Cash	$69.99M	2.929M	-$25.57M
YoY Change	-413.54%	-101.8%	-95.18%
FREE CASH FLOW
Cash From Operating Activities	$26.92M	$87.36M	$154.6M
Capital Expenditures	$527.0K	$1.667M	$8.731M
Free Cash Flow	$26.39M	$85.69M	$145.9M
YoY Change	99.62%	192.44%	-37.46%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	3922000	usd
CY2023	us-gaap	Interest Income Operating InterestIncomeOperating	404296000	usd
CY2022	us-gaap	Interest Income Operating InterestIncomeOperating	301755000	usd
CY2022	us-gaap	Interest Expense Deposits InterestExpenseDeposits	36061000	usd
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	10957000	usd
CY2021	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	86000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	75460000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	99025000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	81317000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-89034000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	13713000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	460879000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	86201000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	713611000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	51062000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	60443000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001466026
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2023Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccruedLiabilitiesAndOtherLiabilities
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#AccruedLiabilitiesAndOtherLiabilities
CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2023#LaborAndRelatedExpense
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2023#LaborAndRelatedExpense
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Expected Return Loss Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2023#LaborAndRelatedExpense
CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Expected Return Loss Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2023#LaborAndRelatedExpense
CY2022Q4	us-gaap	Derivative Asset Statement Of Financial Position Extensible Enumeration DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherAssets
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-35272
CY2023	dei	Entity Registrant Name EntityRegistrantName	MIDLAND STATES BANCORP, INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	IL
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	37-1233196
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	1201 Network Centre Drive
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	62401
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Effingham
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2023	dei	City Area Code CityAreaCode	217
CY2023	dei	Local Phone Number LocalPhoneNumber	342-7321
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	417808861	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	21503989	shares
CY2023	dei	Auditor Firm AuditorFirmId	173
CY2023	dei	Auditor Name AuditorName	Crowe LLP
CY2023	dei	Auditor Location AuditorLocation	Oak Brook, Illinois
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	134212000	usd
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	153345000	usd
CY2023Q4	us-gaap	Federal Funds Sold FederalFundsSold	849000	usd
CY2022Q4	us-gaap	Federal Funds Sold FederalFundsSold	7286000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	135061000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	160631000	usd
CY2023Q4	us-gaap	Marketable Securities MarketableSecurities	915895000	usd
CY2022Q4	us-gaap	Marketable Securities MarketableSecurities	768234000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	4501000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	8626000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6131079000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6306467000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	68502000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	61051000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	6062577000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	6245416000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	3811000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1286000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	82814000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	78293000	usd
CY2023Q4	us-gaap	Other Real Estate OtherRealEstate	9112000	usd
CY2022Q4	us-gaap	Other Real Estate OtherRealEstate	6729000	usd
CY2023Q4	msbi	Non Marketable Equity Securities NonMarketableEquitySecurities	43421000	usd
CY2022Q4	msbi	Non Marketable Equity Securities NonMarketableEquitySecurities	46201000	usd
CY2023Q4	us-gaap	Interest Receivable InterestReceivable	24934000	usd
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	20313000	usd
CY2023Q4	us-gaap	Servicing Asset ServicingAsset	20253000	usd
CY2022Q4	us-gaap	Servicing Asset ServicingAsset	1205000	usd
CY2023Q4	msbi	Mortgage Service Rights Held For Sale MortgageServiceRightsHeldForSale	0	usd
CY2022Q4	msbi	Mortgage Service Rights Held For Sale MortgageServiceRightsHeldForSale	20745000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	161904000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	161904000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	16108000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	20866000	usd
CY2023Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	203485000	usd
CY2022Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	150443000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	182992000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	164609000	usd
CY2023Q4	us-gaap	Assets Assets	7866868000	usd
CY2022Q4	us-gaap	Assets Assets	7855501000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1145395000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1362158000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	5164134000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	5002494000	usd
CY2023Q4	us-gaap	Deposits Deposits	6309529000	usd
CY2022Q4	us-gaap	Deposits Deposits	6364652000	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	34865000	usd
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	42311000	usd
CY2023Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	476000000	usd
CY2022Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	460000000	usd
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CY2023Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	50616000	usd
CY2022Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	49975000	usd
CY2023Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	110459000	usd
CY2022Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	80217000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	7075015000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	7096927000	usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	2.00
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	2.00
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	4000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	4000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	115000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	115000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	115000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	115000	shares
CY2023Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
CY2022Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
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CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	110548000	usd
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CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	21551402	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22214913	shares
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CY2023Q4	us-gaap	Common Stock Value CommonStockValue	216000	usd
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CY2023	msbi	Interest And Fee Income Loans And Leases Taxable InterestAndFeeIncomeLoansAndLeasesTaxable	365529000	usd
CY2022	msbi	Interest And Fee Income Loans And Leases Taxable InterestAndFeeIncomeLoansAndLeasesTaxable	274617000	usd
CY2021	msbi	Interest And Fee Income Loans And Leases Taxable InterestAndFeeIncomeLoansAndLeasesTaxable	213922000	usd
CY2023	msbi	Interest And Fee Income Loans And Leases Tax Exempt InterestAndFeeIncomeLoansAndLeasesTaxExempt	1764000	usd
CY2022	msbi	Interest And Fee Income Loans And Leases Tax Exempt InterestAndFeeIncomeLoansAndLeasesTaxExempt	2082000	usd
CY2021	msbi	Interest And Fee Income Loans And Leases Tax Exempt InterestAndFeeIncomeLoansAndLeasesTaxExempt	2470000	usd
CY2023	us-gaap	Interest And Fee Income Loans And Leases Held For Sale InterestAndFeeIncomeLoansAndLeasesHeldForSale	260000	usd
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CY2021	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	13898000	usd
CY2023	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1349000	usd
CY2022	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2746000	usd
CY2021	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	3336000	usd
CY2023	msbi	Non Marketable Securities Equity Securities NonMarketableSecuritiesEquitySecurities	2819000	usd
CY2022	msbi	Non Marketable Securities Equity Securities NonMarketableSecuritiesEquitySecurities	2198000	usd
CY2021	msbi	Non Marketable Securities Equity Securities NonMarketableSecuritiesEquitySecurities	2348000	usd
CY2022	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	3907000	usd
CY2021	us-gaap	Interest Income Federal Funds Sold InterestIncomeFederalFundsSold	728000	usd
CY2021	us-gaap	Interest Income Operating InterestIncomeOperating	237817000	usd
CY2023	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	5289000	usd
CY2023	us-gaap	Interest Expense InterestExpense	168279000	usd
CY2022	us-gaap	Interest Expense InterestExpense	56020000	usd
CY2021	us-gaap	Interest Expense InterestExpense	30142000	usd
CY2023	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	236017000	usd
CY2022	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	245735000	usd
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	207675000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	21132000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	18797000	usd
CY2021	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	3950000	usd
CY2023	msbi	Provision For Credit Losses On Unfunded Commitments ProvisionForCreditLossesOnUnfundedCommitments	0	usd
CY2022	msbi	Provision For Credit Losses On Unfunded Commitments ProvisionForCreditLossesOnUnfundedCommitments	1550000	usd
CY2021	msbi	Provision For Credit Losses On Unfunded Commitments ProvisionForCreditLossesOnUnfundedCommitments	-412000	usd
CY2023	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	0	usd
CY2022	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-221000	usd
CY2021	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-145000	usd
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	21132000	usd
CY2022	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	20126000	usd
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3393000	usd
CY2023	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	214885000	usd
CY2022	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	225609000	usd
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	204282000	usd
CY2023	msbi	Wealth Management Revenue WealthManagementRevenue	25572000	usd
CY2022	msbi	Wealth Management Revenue WealthManagementRevenue	25708000	usd
CY2021	msbi	Wealth Management Revenue WealthManagementRevenue	26811000	usd
CY2023	msbi	Fees And Commissions Mortgage Banking And Servicing And Other Residential FeesAndCommissionsMortgageBankingAndServicingAndOtherResidential	1903000	usd
CY2022	msbi	Fees And Commissions Mortgage Banking And Servicing And Other Residential FeesAndCommissionsMortgageBankingAndServicingAndOtherResidential	1509000	usd
CY2021	msbi	Fees And Commissions Mortgage Banking And Servicing And Other Residential FeesAndCommissionsMortgageBankingAndServicingAndOtherResidential	5526000	usd
CY2023	msbi	Commissions And Fees Income From Depositor Accounts CommissionsAndFeesIncomeFromDepositorAccounts	11990000	usd
CY2022	msbi	Commissions And Fees Income From Depositor Accounts CommissionsAndFeesIncomeFromDepositorAccounts	10237000	usd
CY2021	msbi	Commissions And Fees Income From Depositor Accounts CommissionsAndFeesIncomeFromDepositorAccounts	9242000	usd
CY2023	msbi	Fees And Commissions From Debit Cards FeesAndCommissionsFromDebitCards	14302000	usd
CY2022	msbi	Fees And Commissions From Debit Cards FeesAndCommissionsFromDebitCards	13879000	usd
CY2021	msbi	Fees And Commissions From Debit Cards FeesAndCommissionsFromDebitCards	14500000	usd
CY2023	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-9372000	usd
CY2022	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-230000	usd
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	537000	usd
CY2023	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	usd
CY2022	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	17531000	usd
CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	2159000	usd
CY2023	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	usd
CY2022	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	1263000	usd
CY2021	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	7532000	usd
CY2023	us-gaap	Noninterest Income Other NoninterestIncomeOther	17756000	usd
CY2022	us-gaap	Noninterest Income Other NoninterestIncomeOther	8936000	usd
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	14160000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	66590000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	79891000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	69899000	usd
CY2023	us-gaap	Labor And Related Expense LaborAndRelatedExpense	93438000	usd
CY2022	us-gaap	Labor And Related Expense LaborAndRelatedExpense	90305000	usd
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	86883000	usd
CY2023	us-gaap	Occupancy Net OccupancyNet	15986000	usd
CY2022	us-gaap	Occupancy Net OccupancyNet	14842000	usd
CY2021	us-gaap	Occupancy Net OccupancyNet	14866000	usd
CY2023	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	26286000	usd
CY2022	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	24350000	usd
CY2021	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	24595000	usd
CY2023	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4779000	usd
CY2022	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	3336000	usd
CY2021	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	3346000	usd
CY2023	us-gaap	Professional Fees ProfessionalFees	7049000	usd
CY2022	us-gaap	Professional Fees ProfessionalFees	6907000	usd
CY2021	us-gaap	Professional Fees ProfessionalFees	10971000	usd
CY2023	us-gaap	Marketing Expense MarketingExpense	3158000	usd
CY2022	us-gaap	Marketing Expense MarketingExpense	3318000	usd
CY2021	us-gaap	Marketing Expense MarketingExpense	3239000	usd
CY2023	us-gaap	Communication Communication	1741000	usd
CY2022	us-gaap	Communication Communication	2382000	usd
CY2021	us-gaap	Communication Communication	3002000	usd
CY2023	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	4206000	usd
CY2022	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	4586000	usd
CY2021	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	2014000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4758000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5410000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5855000	usd
CY2023	msbi	Gain Loss On Sales Of Other Real Estate Total GainLossOnSalesOfOtherRealEstateTotal	-333000	usd
CY2022	msbi	Gain Loss On Sales Of Other Real Estate Total GainLossOnSalesOfOtherRealEstateTotal	-5188000	usd
CY2021	msbi	Gain Loss On Sales Of Other Real Estate Total GainLossOnSalesOfOtherRealEstateTotal	-1277000	usd
CY2023	msbi	Gain Loss On Sale Of Mortgage Service Rights Held For Sale GainLossOnSaleOfMortgageServiceRightsHeldForSale	0	usd
CY2022	msbi	Gain Loss On Sale Of Mortgage Service Rights Held For Sale GainLossOnSaleOfMortgageServiceRightsHeldForSale	-3250000	usd
CY2021	msbi	Gain Loss On Sale Of Mortgage Service Rights Held For Sale GainLossOnSaleOfMortgageServiceRightsHeldForSale	-222000	usd
CY2023	msbi	Federal Home Loan Bank Advances Prepayment Fees FederalHomeLoanBankAdvancesPrepaymentFees	0	usd
CY2022	msbi	Federal Home Loan Bank Advances Prepayment Fees FederalHomeLoanBankAdvancesPrepaymentFees	0	usd
CY2021	msbi	Federal Home Loan Bank Advances Prepayment Fees FederalHomeLoanBankAdvancesPrepaymentFees	8536000	usd
CY2023	us-gaap	Other Noninterest Expense OtherNoninterestExpense	12168000	usd
CY2022	us-gaap	Other Noninterest Expense OtherNoninterestExpense	11788000	usd
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10263000	usd
CY2023	us-gaap	Noninterest Expense NoninterestExpense	173902000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	175662000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	175069000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	107573000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	129838000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99112000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32113000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30813000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17795000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	75460000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	99025000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	81317000	usd
CY2023	msbi	Preferred Stock Dividend And Amortization Of Premium PreferredStockDividendAndAmortizationOfPremium	8913000	usd
CY2022	msbi	Preferred Stock Dividend And Amortization Of Premium PreferredStockDividendAndAmortizationOfPremium	3169000	usd
CY2021	msbi	Preferred Stock Dividend And Amortization Of Premium PreferredStockDividendAndAmortizationOfPremium	0	usd
CY2023	msbi	Earnings Loss Before Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	66547000	usd
CY2022	msbi	Earnings Loss Before Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	95856000	usd
CY2021	msbi	Earnings Loss Before Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	81317000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.97
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.24
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.58
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.97
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.23
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.57
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	22115869	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	22341498	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	22481389	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	22124402	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	22395698	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	22547353	shares
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1280000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-106927000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-12553000	usd
CY2023	msbi	Other Comprehensive Income Loss Provision For Credit Loss OtherComprehensiveIncomeLossProvisionForCreditLoss	0	usd
CY2022	msbi	Other Comprehensive Income Loss Provision For Credit Loss OtherComprehensiveIncomeLossProvisionForCreditLoss	-221000	usd
CY2021	msbi	Other Comprehensive Income Loss Provision For Credit Loss OtherComprehensiveIncomeLossProvisionForCreditLoss	-145000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-9372000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-230000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	537000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2184000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-28876000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-3640000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5908000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-78042000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-9595000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	1556000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	2438000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	6851000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	0	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	17531000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	2159000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	420000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	-4101000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	1291000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	1136000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-10992000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	3401000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	7044000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-89034000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6194000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	82504000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	9991000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	75123000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	621391000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	81317000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6194000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.12
CY2021	msbi	Dividends Common Stock And Share Based Compensation DividendsCommonStockAndShareBasedCompensation	25172000	usd
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	11692000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1938000	usd
CY2021	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	2249000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	663837000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	99025000	usd
CY2022	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	110548000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.16
CY2022	msbi	Dividends Common Stock And Share Based Compensation DividendsCommonStockAndShareBasedCompensation	25923000	usd
CY2022	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	2188000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	758574000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	75460000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	7044000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.20
CY2023	msbi	Dividends Common Stock And Share Based Compensation DividendsCommonStockAndShareBasedCompensation	26573000	usd
CY2023	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8913000	usd
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	17898000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2489000	usd
CY2023	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	1670000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	791853000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	75460000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	99025000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	81317000	usd
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	21132000	usd
CY2022	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	20126000	usd
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3393000	usd
CY2023	us-gaap	Depreciation Depreciation	4778000	usd
CY2022	us-gaap	Depreciation Depreciation	4842000	usd
CY2021	us-gaap	Depreciation Depreciation	5506000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4758000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5410000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5855000	usd
CY2023	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1635000	usd
CY2022	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1831000	usd
CY2021	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1742000	usd
CY2023	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	1550000	usd
CY2022	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	2294000	usd
CY2021	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	3242000	usd
CY2023	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	2489000	usd
CY2022	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	2211000	usd
CY2021	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	1938000	usd
CY2023	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	4439000	usd
CY2022	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	3320000	usd
CY2021	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	3451000	usd
CY2023	msbi	Gain On Proceeds From Life Insurance Corporate Or Bank Owned GainOnProceedsFromLifeInsuranceCorporateOrBankOwned	0	usd
CY2022	msbi	Gain On Proceeds From Life Insurance Corporate Or Bank Owned GainOnProceedsFromLifeInsuranceCorporateOrBankOwned	264000	usd
CY2021	msbi	Gain On Proceeds From Life Insurance Corporate Or Bank Owned GainOnProceedsFromLifeInsuranceCorporateOrBankOwned	1045000	usd
CY2023	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	2414000	usd
CY2022	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2311000	usd
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4196000	usd
CY2023	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	usd
CY2022	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	17531000	usd
CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	2159000	usd
CY2023	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-9372000	usd
CY2022	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-230000	usd
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	537000	usd
CY2023	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	676000	usd
CY2022	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	usd
CY2021	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	usd
CY2023	msbi	Gains Losses On Sales Of Other Real Estate Excluding Write Downs GainsLossesOnSalesOfOtherRealEstateExcludingWriteDowns	819000	usd
CY2022	msbi	Gains Losses On Sales Of Other Real Estate Excluding Write Downs GainsLossesOnSalesOfOtherRealEstateExcludingWriteDowns	-118000	usd
CY2021	msbi	Gains Losses On Sales Of Other Real Estate Excluding Write Downs GainsLossesOnSalesOfOtherRealEstateExcludingWriteDowns	473000	usd
CY2023	msbi	Write Down Of Other Real Estate Owned WriteDownOfOtherRealEstateOwned	0	usd
CY2022	msbi	Write Down Of Other Real Estate Owned WriteDownOfOtherRealEstateOwned	4277000	usd
CY2021	msbi	Write Down Of Other Real Estate Owned WriteDownOfOtherRealEstateOwned	454000	usd
CY2023	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	58953000	usd
CY2022	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	134612000	usd
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	504801000	usd
CY2023	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	98851000	usd
CY2022	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	269958000	usd
CY2021	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	739954000	usd
CY2023	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2395000	usd
CY2022	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	844000	usd
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	4952000	usd
CY2023	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	usd
CY2022	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	1263000	usd
CY2021	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	7532000	usd
CY2023	msbi	Gain Loss On Sale Of Mortgage Service Rights Held For Sale GainLossOnSaleOfMortgageServiceRightsHeldForSale	0	usd
CY2022	msbi	Gain Loss On Sale Of Mortgage Service Rights Held For Sale GainLossOnSaleOfMortgageServiceRightsHeldForSale	-3250000	usd
CY2021	msbi	Gain Loss On Sale Of Mortgage Service Rights Held For Sale GainLossOnSaleOfMortgageServiceRightsHeldForSale	-222000	usd
CY2023	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	4621000	usd
CY2022	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	807000	usd
CY2021	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-4075000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	18731000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-876000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	31974000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	27661000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-13579000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	24404000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	154638000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	247065000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	334438000	usd
CY2023	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	412799000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	192349000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	469789000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	191733000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	136403000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	14777000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	74531000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	85077000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	208377000	usd
CY2023	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	286000	usd
CY2022	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	511000	usd
CY2021	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	260000	usd
CY2023	msbi	Equity Securities Fv Ni Sales EquitySecuritiesFvNiSales	5148000	usd
CY2022	msbi	Equity Securities Fv Ni Sales EquitySecuritiesFvNiSales	0	usd
CY2021	msbi	Equity Securities Fv Ni Sales EquitySecuritiesFvNiSales	0	usd
CY2023	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-112496000	usd
CY2022	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1177598000	usd
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	258401000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8731000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3470000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2718000	usd
CY2023	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	104000	usd
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	175000	usd
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	647000	usd
CY2023	msbi	Payments To Acquire Nonmarketable Equity Securities PaymentsToAcquireNonmarketableEquitySecurities	239597000	usd
CY2022	msbi	Payments To Acquire Nonmarketable Equity Securities PaymentsToAcquireNonmarketableEquitySecurities	24787000	usd
CY2021	msbi	Payments To Acquire Nonmarketable Equity Securities PaymentsToAcquireNonmarketableEquitySecurities	0	usd
CY2023	msbi	Proceeds From Sale Of Nonmarketable Equity Securities ProceedsFromSaleOfNonmarketableEquitySecurities	242377000	usd
CY2022	msbi	Proceeds From Sale Of Nonmarketable Equity Securities ProceedsFromSaleOfNonmarketableEquitySecurities	14927000	usd
CY2021	msbi	Proceeds From Sale Of Nonmarketable Equity Securities ProceedsFromSaleOfNonmarketableEquitySecurities	20255000	usd
CY2023	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	7547000	usd
CY2022	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	1453000	usd
CY2021	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	9210000	usd
CY2023	us-gaap	Payments For Proceeds From Life Insurance Policies PaymentsForProceedsFromLifeInsurancePolicies	48603000	usd
CY2022	us-gaap	Payments For Proceeds From Life Insurance Policies PaymentsForProceedsFromLifeInsurancePolicies	-1518000	usd
CY2021	us-gaap	Payments For Proceeds From Life Insurance Policies PaymentsForProceedsFromLifeInsurancePolicies	-2122000	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-60275000	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2715000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-76080000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1098887000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-478495000	usd
CY2023	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-55123000	usd
CY2022	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	174210000	usd
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1009632000	usd
CY2023	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-7446000	usd
CY2022	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-34492000	usd
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	7846000	usd
CY2023	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	23288000000	usd
CY2022	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	3540000000	usd
CY2021	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	500000000	usd
CY2023	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	23272000000	usd
CY2022	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	3390171000	usd
CY2021	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	977536000	usd
CY2023	msbi	Federal Home Loan Bank Advances Prepayment Fees FederalHomeLoanBankAdvancesPrepaymentFees	0	usd
CY2022	msbi	Federal Home Loan Bank Advances Prepayment Fees FederalHomeLoanBankAdvancesPrepaymentFees	0	usd
CY2021	msbi	Federal Home Loan Bank Advances Prepayment Fees FederalHomeLoanBankAdvancesPrepaymentFees	8536000	usd
CY2023	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	5845000	usd
CY2022	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	40000000	usd
CY2021	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	31075000	usd
CY2023	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	110548000	usd
CY2021	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	usd
CY2023	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	8913000	usd
CY2022	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3169000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	26573000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	11692000	usd
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	2188000	usd
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	2249000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-104128000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	332082000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	482788000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-25570000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-519740000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	338731000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	160631000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	680371000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	341640000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	135061000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	160631000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	680371000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	658029000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1012592000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	159139000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7759000	usd
CY2023	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	0	usd
CY2022	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	103357000	usd
CY2021	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	123117000	usd
CY2023	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	9112000	usd
CY2022	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	517000	usd
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	805000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	915895000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	191733000	usd
CY2023	msbi	Transfer Of Premises And Equipment To Assets Held For Sale TransferOfPremisesAndEquipmentToAssetsHeldForSale	0	usd
CY2022	msbi	Transfer Of Premises And Equipment To Assets Held For Sale TransferOfPremisesAndEquipmentToAssetsHeldForSale	0	usd
CY2021	msbi	Transfer Of Premises And Equipment To Assets Held For Sale TransferOfPremisesAndEquipmentToAssetsHeldForSale	23000	usd
CY2023	msbi	Transfer Of Loans Servicing Rights Held For Sale To Loan Servicing At Lower Of Cost Or Market TransferOfLoansServicingRightsHeldForSaleToLoanServicingAtLowerOfCostOrMarket	0	usd
CY2022	msbi	Transfer Of Loans Servicing Rights Held For Sale To Loan Servicing At Lower Of Cost Or Market TransferOfLoansServicingRightsHeldForSaleToLoanServicingAtLowerOfCostOrMarket	23995000	usd
CY2021	msbi	Transfer Of Loans Servicing Rights Held For Sale To Loan Servicing At Lower Of Cost Or Market TransferOfLoansServicingRightsHeldForSaleToLoanServicingAtLowerOfCostOrMarket	705000	usd
CY2023	msbi	Pending Settlements On Securities Sold Purchased Net PendingSettlementsOnSecuritiesSoldPurchasedNet	-20745000	usd
CY2022	msbi	Pending Settlements On Securities Sold Purchased Net PendingSettlementsOnSecuritiesSoldPurchasedNet	0	usd
CY2021	msbi	Pending Settlements On Securities Sold Purchased Net PendingSettlementsOnSecuritiesSoldPurchasedNet	0	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2470000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	502000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1118000	usd
CY2023Q4	msbi	Interest Receivable From Loans InterestReceivableFromLoans	20700000	usd
CY2022Q4	msbi	Interest Receivable From Loans InterestReceivableFromLoans	17000000	usd
CY2023Q4	msbi	Loans And Lease Receivables Probability Of Default Non Accrual Loans Threshold Balance Minimum LoansAndLeaseReceivablesProbabilityOfDefaultNonAccrualLoansThresholdBalanceMinimum	500000	usd
CY2023Q4	msbi	Loans And Lease Receivables Probability Of Default Accrual Loans90 Days Due Threshold Balance Minimum LoansAndLeaseReceivablesProbabilityOfDefaultAccrualLoans90DaysDueThresholdBalanceMinimum	100000	usd
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Allowance for Credit Losses on Unfunded Commitments</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In the ordinary course of business, the Company has entered into credit-related financial instruments consisting of commitments to extend credit, commercial letters of credit and standby letters of credit. The notional amount of these commitments is not reflected in the consolidated financial statements until they are funded.</span></div>The Company estimates expected credit losses over the contractual period in which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Company. The allowance for credit losses on unfunded commitments is adjusted as a provision for credit loss expense on the consolidated income statement. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over its estimated life. Expected utilization rates are compared to the current funded portion of the total commitment amount as a practical expedient for funded exposure at default.
CY2023Q4	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	3500000	usd
CY2022Q4	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	1900000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	136403000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1012592000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3217000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	99914000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	915895000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	873023000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	601000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	105390000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	768234000	usd
CY2023Q4	us-gaap	Deposit Liabilities Collateral Issued Financial Instruments DepositLiabilitiesCollateralIssuedFinancialInstruments	320500000	usd
CY2022Q4	us-gaap	Deposit Liabilities Collateral Issued Financial Instruments DepositLiabilitiesCollateralIssuedFinancialInstruments	440600000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	13624000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	13590000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	112287000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	109895000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	122716000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	109079000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	26827000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	25302000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	737138000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	14777000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	338000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	829000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	537000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	-9710000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	-1059000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	252732000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	99914000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	241906000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	15132000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	463399000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	90258000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	705305000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	105390000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	262	security
CY2023Q4	msbi	Available For Sale Securities In Unrealized Loss Positions Aggregate Depreciation Percentage AvailableForSaleSecuritiesInUnrealizedLossPositionsAggregateDepreciationPercentage	0.1227
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6131079000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6306467000	usd
CY2023Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	3800000	usd
CY2022Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	4400000	usd
CY2023Q4	us-gaap	Deferred Discounts Finance Charges And Interest Included In Receivables DeferredDiscountsFinanceChargesAndInterestIncludedInReceivables	66400000	usd
CY2022Q4	us-gaap	Deferred Discounts Finance Charges And Interest Included In Receivables DeferredDiscountsFinanceChargesAndInterestIncludedInReceivables	62600000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	3800000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1300000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	61051000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	21132000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	20301000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	6620000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	68502000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	18797000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	11103000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	2295000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	61051000	usd
CY2021	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	3950000	usd
CY2021	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	15420000	usd
CY2021	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	2089000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	51062000	usd
CY2023Q4	msbi	Loans And Lease Receivables Probability Of Default Non Accrual Loans Threshold Balance Minimum LoansAndLeaseReceivablesProbabilityOfDefaultNonAccrualLoansThresholdBalanceMinimum	500000	usd
CY2023Q4	msbi	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	28267000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	27139000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	55406000	usd
CY2022Q4	msbi	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	19445000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	22531000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	41976000	usd
CY2023	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
CY2022	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
CY2023	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	3400000	usd
CY2022	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	2800000	usd
CY2021	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	2700000	usd
CY2023Q4	msbi	Collateral Dependent Loans CollateralDependentLoans	31769000	usd
CY2022Q4	msbi	Collateral Dependent Loans CollateralDependentLoans	27681000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6131079000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6306467000	usd
CY2023	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2400000	usd
CY2023	msbi	Number Of Main Regions NumberOfMainRegions	4	region
CY2023Q4	us-gaap	Property Subject To Or Available For Operating Lease Gross PropertySubjectToOrAvailableForOperatingLeaseGross	7673000	usd
CY2022Q4	us-gaap	Property Subject To Or Available For Operating Lease Gross PropertySubjectToOrAvailableForOperatingLeaseGross	7001000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	137542000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	128923000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	54728000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	50630000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	82814000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	78293000	usd
CY2023	us-gaap	Depreciation Depreciation	4800000	usd
CY2022	us-gaap	Depreciation Depreciation	4800000	usd
CY2021	us-gaap	Depreciation Depreciation	5500000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P10Y
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	7700000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	7000000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	9300000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	8900000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	1919000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	2096000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	2256000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	2507000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2470000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	502000	usd
CY2023	msbi	Operating Leases Right Of Use Assets Derecognized Due To Terminations Or Impairment OperatingLeasesRightOfUseAssetsDerecognizedDueToTerminationsOrImpairment	0	usd
CY2022	msbi	Operating Leases Right Of Use Assets Derecognized Due To Terminations Or Impairment OperatingLeasesRightOfUseAssetsDerecognizedDueToTerminationsOrImpairment	123000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y9M18D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y2M12D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0341
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0289
CY2023	us-gaap	Operating Lease Expense OperatingLeaseExpense	1400000	usd
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	1500000	usd
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	1400000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	2025000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1322000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1197000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1101000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1074000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	3976000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	10695000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1360000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	9335000	usd
CY2023Q4	msbi	Mortgage Loans Serviced For Others MortgageLoansServicedForOthers	2352713000	usd
CY2023Q4	msbi	Mortgage Loans Serviced For Others Carrying Value MortgageLoansServicedForOthersCarryingValue	20253000	usd
CY2022Q4	msbi	Mortgage Loans Serviced For Others MortgageLoansServicedForOthers	2556996000	usd
CY2022Q4	msbi	Mortgage Loans Serviced For Others Carrying Value MortgageLoansServicedForOthersCarryingValue	21950000	usd
CY2023	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.0723
CY2023	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0812
CY2023Q4	us-gaap	Goodwill Goodwill	161904000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	161904000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	74832000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	58724000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	16108000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	74832000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	53966000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	20866000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4800000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5400000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5900000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	4008000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	3224000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2672000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2101000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1582000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	2521000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	16108000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1145395000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1362158000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	2511840000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	2494073000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	1135629000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	1184101000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	559267000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	661932000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Time Deposits InterestBearingDomesticDepositTimeDeposits	957398000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Time Deposits InterestBearingDomesticDepositTimeDeposits	662388000	usd
CY2023Q4	us-gaap	Deposits Deposits	6309529000	usd
CY2022Q4	us-gaap	Deposits Deposits	6364652000	usd
CY2023Q4	msbi	Time Deposits250000 Or More TimeDeposits250000OrMore	179200000	usd
CY2022Q4	msbi	Time Deposits250000 Or More TimeDeposits250000OrMore	118600000	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-21000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	806156000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	102413000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	38566000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	7026000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	3237000	usd
CY2023Q4	us-gaap	Time Deposits TimeDeposits	957398000	usd
CY2023Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	476000000	usd
CY2022Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	460000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	2980000000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	2900000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	286000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From One To Two Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate	40000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Two To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate	35000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Three To Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate	0	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Four To Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate	115000000	usd
CY2023Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	476000000	usd
CY2023Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	94000000	usd
CY2023Q4	us-gaap	Subordinated Debt SubordinatedDebt	93546000	usd
CY2022Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	100550000	usd
CY2022Q4	us-gaap	Subordinated Debt SubordinatedDebt	99772000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25221000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	22792000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10044000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1791000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	64000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	7926000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9226000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	11101000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	144000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-543000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3144000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-319000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32113000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30813000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17795000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22590000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	27266000	usd
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20814000	usd
CY2023	msbi	Income Tax Reconciliation Tax Exempt Interest IncomeTaxReconciliationTaxExemptInterest	-1762000	usd
CY2022	msbi	Income Tax Reconciliation Tax Exempt Interest IncomeTaxReconciliationTaxExemptInterest	-2014000	usd
CY2021	msbi	Income Tax Reconciliation Tax Exempt Interest IncomeTaxReconciliationTaxExemptInterest	-2499000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6844000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6274000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5465000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	0	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	0	usd
CY2021	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	-5614000	usd
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-186000	usd
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-93000	usd
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	3756000	usd
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	0	usd
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	0	usd
CY2023	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	69000	usd
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	58000	usd
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	47000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	637000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-585000	usd
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-325000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32113000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30813000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17795000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-6800000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	18496000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	16484000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2108000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2238000	usd
CY2023Q4	msbi	Deferred Tax Assets Loans DeferredTaxAssetsLoans	1069000	usd
CY2022Q4	msbi	Deferred Tax Assets Loans DeferredTaxAssetsLoans	1379000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	621000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	861000	usd
CY2023Q4	msbi	Deferred Tax Assets Unrealized Loss On Investments Securities DeferredTaxAssetsUnrealizedLossOnInvestmentsSecurities	26022000	usd
CY2022Q4	msbi	Deferred Tax Assets Unrealized Loss On Investments Securities DeferredTaxAssetsUnrealizedLossOnInvestmentsSecurities	28404000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	2280000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	2700000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	8090000	usd
CY2022Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	8922000	usd
CY2023Q4	msbi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	2521000	usd
CY2022Q4	msbi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	2415000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2842000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4837000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	64049000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	68240000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	244000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	176000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	63805000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	68064000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	786000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	573000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	3870000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	4217000	usd
CY2023Q4	msbi	Deferred Tax Liabilities Fair Value Adjustment On Trust Preferred Debentures DeferredTaxLiabilitiesFairValueAdjustmentOnTrustPreferredDebentures	3853000	usd
CY2022Q4	msbi	Deferred Tax Liabilities Fair Value Adjustment On Trust Preferred Debentures DeferredTaxLiabilitiesFairValueAdjustmentOnTrustPreferredDebentures	4025000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	2410000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	3006000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	3577000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	4458000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	23824000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	24346000	usd
CY2023Q4	msbi	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	2072000	usd
CY2022Q4	msbi	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	1890000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1202000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3064000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	41594000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	45579000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	22211000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	22485000	usd
CY2022Q4	msbi	Accumulation Of Prior Years Earnings Representing Tax Bad Debt Deductions AccumulationOfPriorYearsEarningsRepresentingTaxBadDebtDeductions	3100000	usd
CY2023Q4	msbi	Accumulation Of Prior Years Earnings Representing Tax Bad Debt Deductions AccumulationOfPriorYearsEarningsRepresentingTaxBadDebtDeductions	3100000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	176000	usd
CY2023	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	68000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	244000	usd
CY2023	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2023	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1800000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1600000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1200000	usd
CY2022	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	usd
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	usd
CY2023	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	usd
CY2023	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	usd
CY2022	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	usd
CY2023	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	635000	usd
CY2022	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	445000	usd
CY2023	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	511000	usd
CY2022	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	828000	usd
CY2023	us-gaap	Defined Benefit Plan Amortization Of Transition Asset Obligation DefinedBenefitPlanAmortizationOfTransitionAssetObligation	0	usd
CY2022	us-gaap	Defined Benefit Plan Amortization Of Transition Asset Obligation DefinedBenefitPlanAmortizationOfTransitionAssetObligation	-14000	usd
CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	124000	usd
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-369000	usd
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0505
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0270
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0475
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0550
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	13353000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	13016000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	13353000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	13016000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	12768000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	12765000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P4Y
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P4Y
CY2023	msbi	Share Based Compensation Arrangement By Share Based Payment Award Options Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsContractualTerm	P10Y
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0424
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2381
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0423
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y3M
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.92
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	415572	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	25.81
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	42437	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.45
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	30179	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	28.43
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	342956	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	26.49
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y8M12D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	200044	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	25.10
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y6M
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	342956	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	26.49
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P5Y8M12D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	600000	usd
CY2023Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	600000	usd
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	700000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y9M18D
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	783000	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2061000	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2225000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	230000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	943000	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	814000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	48000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	198000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	171000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	75460000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	99025000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	81317000	usd
CY2023	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	8913000	usd
CY2022	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	3169000	usd
CY2021	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	0	usd
CY2023	msbi	Earnings Loss Before Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	66547000	usd
CY2022	msbi	Earnings Loss Before Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	95856000	usd
CY2021	msbi	Earnings Loss Before Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic EarningsLossBeforeDistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	81317000	usd
CY2023	us-gaap	Dividends Common Stock DividendsCommonStock	26234000	usd
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	25628000	usd
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	24912000	usd
CY2023	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	339000	usd
CY2022	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	295000	usd
CY2021	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	260000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0850
CY2023	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	565000	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	809000	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	564000	usd
CY2023	msbi	Undistributed Earnings To Common Shareholders UndistributedEarningsToCommonShareholders	39409000	usd
CY2022	msbi	Undistributed Earnings To Common Shareholders UndistributedEarningsToCommonShareholders	69124000	usd
CY2021	msbi	Undistributed Earnings To Common Shareholders UndistributedEarningsToCommonShareholders	55581000	usd
CY2023	us-gaap	Dividends Common Stock DividendsCommonStock	26234000	usd
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	25628000	usd
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	24912000	usd
CY2023	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	39409000	usd
CY2022	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	69124000	usd
CY2021	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	55581000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	65643000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	94752000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	80493000	usd
CY2023	us-gaap	Dividends Common Stock DividendsCommonStock	26234000	usd
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	25628000	usd
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	24912000	usd
CY2023	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Diluted UndistributedEarningsLossAvailableToCommonShareholdersDiluted	39409000	usd
CY2022	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Diluted UndistributedEarningsLossAvailableToCommonShareholdersDiluted	69124000	usd
CY2021	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Diluted UndistributedEarningsLossAvailableToCommonShareholdersDiluted	55581000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	65643000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	94752000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	80493000	usd
CY2023	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	0	usd
CY2022	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	2000	usd
CY2021	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	2000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	65643000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	94754000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	80495000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	22115869	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	22341498	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	22481389	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	8533	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	54200	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	65964	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	22124402	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	22395698	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	22547353	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.97
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.24
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.58
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.97
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.23
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.57
CY2023Q4	us-gaap	Capital Capital	923101000	usd
CY2023Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1320
CY2023Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	734070000	usd
CY2023Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.1050
CY2023Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	762508000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1091
CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	594247000	usd
CY2023Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets CommonEquityTier1CapitalToRiskWeightedAssets	587009000	usd
CY2023Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets Ratio CommonEquityTier1CapitalToRiskWeightedAssetsRatio	0.0840
CY2023Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets Required For Adequate Capital Amount CommonEquityTier1CapitalToRiskWeightedAssetsRequiredForAdequateCapitalAmount	489380000	usd
CY2023Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets Required For Adequate Capital Ratio CommonEquityTier1CapitalToRiskWeightedAssetsRequiredForAdequateCapitalRatio	0.0700
CY2023Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	762508000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0971
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	314228000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2022Q4	us-gaap	Capital Capital	891320000	usd
CY2022Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1238
CY2022Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	755859000	usd
CY2022Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.1050
CY2022Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	734754000	usd
CY2022Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1021
CY2022Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	611886000	usd
CY2022Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0850
CY2022Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets CommonEquityTier1CapitalToRiskWeightedAssets	559255000	usd
CY2022Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets Ratio CommonEquityTier1CapitalToRiskWeightedAssetsRatio	0.0777
CY2022Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets Required For Adequate Capital Amount CommonEquityTier1CapitalToRiskWeightedAssetsRequiredForAdequateCapitalAmount	503906000	usd
CY2022Q4	msbi	Common Equity Tier1 Capital To Risk Weighted Assets Required For Adequate Capital Ratio CommonEquityTier1CapitalToRiskWeightedAssetsRequiredForAdequateCapitalRatio	0.0700
CY2022Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	734754000	usd
CY2022Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0943
CY2022Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	311715000	usd
CY2022Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2023	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	163000	usd
CY2022	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-425000	usd
CY2021	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-215000	usd
CY2023Q4	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	0	usd
CY2022	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	usd
CY2023	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	usd
CY2021	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	usd
CY2023Q4	msbi	Liability For Unresolved Repurchase Demands LiabilityForUnresolvedRepurchaseDemands	100000	usd
CY2022Q4	msbi	Liability For Unresolved Repurchase Demands LiabilityForUnresolvedRepurchaseDemands	200000	usd
CY2023	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	236017000	usd
CY2023	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	21132000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	66590000	usd
CY2023	us-gaap	Noninterest Expense NoninterestExpense	173902000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	107573000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32113000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	75460000	usd
CY2023Q4	us-gaap	Assets Assets	7866868000	usd
CY2022	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	245735000	usd
CY2022	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	20126000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	79891000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	175662000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	129838000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30813000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	99025000	usd
CY2022Q4	us-gaap	Assets Assets	7855501000	usd
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	207675000	usd
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3393000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	69899000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	175069000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	99112000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17795000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	81317000	usd
CY2021Q4	us-gaap	Assets Assets	7443805000	usd
CY2023	msbi	Noninterest Income Out Of Scope Of Topic606 NoninterestIncomeOutOfScopeOfTopic606	11408000	usd
CY2022	msbi	Noninterest Income Out Of Scope Of Topic606 NoninterestIncomeOutOfScopeOfTopic606	26195000	usd
CY2021	msbi	Noninterest Income Out Of Scope Of Topic606 NoninterestIncomeOutOfScopeOfTopic606	14879000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	66590000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	79891000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	69899000	usd
CY2023	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false

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$MSBI
Midland States Bancorp Inc Stock $msbi

2024 Q1 Form 10-K Financial Statement

#000146602624000009 Filed on February 23, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MSBI Midland States Bancorp Inc Stock $msbi

2024 Q1 Form 10-K Financial Statement

#000146602624000009 Filed on February 23, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MSBI
Midland States Bancorp Inc Stock $msbi