$BFIN
BankFinancial CORP Stock $bfin

$bfin Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000143774924006272 Filed on March 01, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$809.0K		$3.318M
YoY Change	-0.86%		1.44%
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	$418.0K	$451.0K	$1.541M
YoY Change	93.52%	150.56%	22.11%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$4.818M		$14.33M
YoY Change	81.13%		219.71%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$2.210M	$2.861M	$12.75M
YoY Change	-36.37%	-37.97%	-7.83%
Income Tax	$500.0K	$782.0K	$3.359M
% Of Pretax Income	22.62%	27.33%	26.34%
Net Earnings	$1.710M	$2.079M	$9.393M
YoY Change	-35.06%	-39.53%	-10.49%
Net Earnings / Revenue	211.37%		283.09%
Basic Earnings Per Share	$0.14		$0.74
Diluted Earnings Per Share	$0.14	$0.17	$0.74
COMMON SHARES
Basic Shares Outstanding	12.46M	12.55M	12.62M
Diluted Shares Outstanding

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$372.0M	$361.2M
YoY Change	50.45%	30.35%
Cash & Equivalents	$132.4M	$178.5M
Short-Term Investments	$239.5M	$182.7M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$22.61M	$22.95M	$22.95M
YoY Change	-1.49%	-8.04%	-19.93%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$4.159M	$5.035M	$5.035M
YoY Change	-37.37%	-2.71%	-2.71%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$1.480B	$1.487B	$1.487B
YoY Change	-4.15%	-5.57%	-5.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$14.02M	$16.70M	$12.75M
YoY Change	-3.82%	1.09%	-22.78%
Accrued Expenses			$3.943M
YoY Change			6.37%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$14.02M	$16.70M	$16.70M
YoY Change	-3.82%	-17.44%	-17.44%
LONG-TERM LIABILITIES
Long-Term Debt	$18.71M	$19.68M	$19.68M
YoY Change	-4.78%	0.22%	0.22%
Other Long-Term Liabilities	$7.021M	$25.70M	$25.70M
YoY Change
Total Long-Term Liabilities	$25.73M	$45.38M	$45.38M
YoY Change	30.95%	131.12%	131.12%
TOTAL LIABILITIES
Total Short-Term Liabilities	$14.02M	$16.70M	$16.70M
Total Long-Term Liabilities	$25.73M	$45.38M	$45.38M
Total Liabilities	$1.324B	$1.332B	$1.332B
YoY Change	-4.87%	-6.43%	-6.43%
SHAREHOLDERS EQUITY
Retained Earnings	$74.89M	$74.43M
YoY Change	4.81%	3.65%
Common Stock	$125.0K	$125.0K
YoY Change	-1.57%	-1.57%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$156.0M	$155.4M	$155.4M
YoY Change
Total Liabilities & Shareholders Equity	$1.480B	$1.487B	$1.487B
YoY Change	-4.15%	-5.57%	-5.57%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$1.710M	$2.079M	$9.393M
YoY Change	-35.06%	-39.53%	-10.49%
Depreciation, Depletion And Amortization	$418.0K	$451.0K	$1.541M
YoY Change	93.52%	150.56%	22.11%
Cash From Operating Activities	$9.000K	$4.001M	$9.221M
YoY Change	-100.4%	-54.55%	-0.76%
INVESTING ACTIVITIES
Capital Expenditures	$243.0K	$564.0K	$1.874M
YoY Change	-24.06%	8.05%	-3.6%
Acquisitions
YoY Change
Other Investing Activities	-$39.18M	$25.81M	$199.8M
YoY Change	-196.32%	-126.23%	-163.46%
Cash From Investing Activities	-$39.43M	$25.24M	$197.9M
YoY Change	-197.69%	-125.52%	-162.48%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$6.628M	-22.32M	-$95.43M
YoY Change	-76.2%	-62.32%	-25.39%
NET CHANGE
Cash From Operating Activities	$9.000K	4.001M	$9.221M
Cash From Investing Activities	-$39.43M	25.24M	$197.9M
Cash From Financing Activities	-$6.628M	-22.32M	-$95.43M
Net Change In Cash	-$46.04M	6.923M	$111.7M
YoY Change	-549.91%	-104.64%	-125.66%
FREE CASH FLOW
Cash From Operating Activities	$9.000K	$4.001M	$9.221M
Capital Expenditures	$243.0K	$564.0K	$1.874M
Free Cash Flow	-$234.0K	$3.437M	$7.347M
YoY Change	-90.98%	-58.5%	-0.01%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
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CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8129000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
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CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
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CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	12475881
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	12742597
CY2022	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	458888
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.4
CY2023	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	266716
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.4
CY2023Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0324	pure
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	0	usd
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CY2023	bfin	Share Based Compensation And Postretirement Benefits Period Of Service Required For Eligibility ShareBasedCompensationAndPostretirementBenefitsPeriodOfServiceRequiredForEligibility	P1Y
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CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	0-51331
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	75-3199276
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	60 North Frontage Road
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Burr Ridge
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60527
CY2023	dei	City Area Code CityAreaCode	800
CY2023	dei	Local Phone Number LocalPhoneNumber	894-6900
CY2023	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2023	dei	Trading Symbol TradingSymbol	BFIN
CY2023	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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	Non-accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	true
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CY2023	dei	Entity Shell Company EntityShellCompany	false
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CY2023	dei	Auditor Name AuditorName	RSM US LLP
CY2023	dei	Auditor Location AuditorLocation	Chicago, Illinois
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	19781000	usd
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	12046000	usd
CY2023Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	158703000	usd
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CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	178484000	usd
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CY2023Q4	us-gaap	Marketable Securities MarketableSecurities	182716000	usd
CY2022Q4	us-gaap	Marketable Securities MarketableSecurities	210338000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1050761000	usd
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CY2023Q4	us-gaap	Foreclosed Assets ForeclosedAssets	2777000	usd
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CY2023Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	7490000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	7490000	usd
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CY2023Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	18469000	usd
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CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	4512000	usd
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CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	260851000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	280625000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1000772000	usd
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CY2022Q4	us-gaap	Deposits Deposits	1374934000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	25000000	usd
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CY2022	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	1393000	usd
CY2023	bfin	Federal Deposit Insurance Corporation Premium Expense Income FederalDepositInsuranceCorporationPremiumExpenseIncome	865000	usd
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CY2023	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4954000	usd
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CY2023	us-gaap	Noninterest Expense NoninterestExpense	43181000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	41128000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	12752000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	13835000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3359000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3341000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	9393000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	10494000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.8
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	12622882
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	13071742
CY2023	us-gaap	Profit Loss ProfitLoss	9393000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	10494000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	4260000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-8370000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1108000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2178000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	3152000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-6192000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-454000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-119000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-335000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3487000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6192000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12880000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4302000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	157466000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	10494000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6192000	usd
CY2022	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	4866000	usd
CY2022	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	5231000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	151671000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	9393000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3487000	usd
CY2023	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2393000	usd
CY2023	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	5056000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	155383000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	9393000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	10494000	usd
CY2023	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	395000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1828000	usd
CY2023	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-82000	usd
CY2022	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	0	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1541000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1262000	usd
CY2023	us-gaap	Increase Decrease In Loans Deferred Income IncreaseDecreaseInLoansDeferredIncome	86000	usd
CY2022	us-gaap	Increase Decrease In Loans Deferred Income IncreaseDecreaseInLoansDeferredIncome	1301000	usd
CY2023	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-454000	usd
CY2022	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-0	usd
CY2023	bfin	Valuation Reserve On Premises Heldforsale ValuationReserveOnPremisesHeldforsale	602000	usd
CY2022	bfin	Valuation Reserve On Premises Heldforsale ValuationReserveOnPremisesHeldforsale	0	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	9000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-0	usd
CY2023	bfin	Gain Loss On Sale Of Foreclosed Assets GainLossOnSaleOfForeclosedAssets	-15000	usd
CY2022	bfin	Gain Loss On Sale Of Foreclosed Assets GainLossOnSaleOfForeclosedAssets	-22000	usd
CY2023	bfin	Foreclosed Assets Writedown ForeclosedAssetsWritedown	-70000	usd
CY2022	bfin	Foreclosed Assets Writedown ForeclosedAssetsWritedown	-0	usd
CY2023	bfin	Foreclosed Assets Valuation Adjustments ForeclosedAssetsValuationAdjustments	-111000	usd
CY2022	bfin	Foreclosed Assets Valuation Adjustments ForeclosedAssetsValuationAdjustments	-31000	usd
CY2023	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	-346000	usd
CY2022	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	-39000	usd
CY2023	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-347000	usd
CY2022	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	237000	usd
CY2023	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	204000	usd
CY2022	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	2690000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1849000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1824000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-5521000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-1978000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9221000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9294000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	33736000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2888000	usd
CY2023	bfin	Proceeds From Principal Repayments Of Investments ProceedsFromPrincipalRepaymentsOfInvestments	765000	usd
CY2022	bfin	Proceeds From Principal Repayments Of Investments ProceedsFromPrincipalRepaymentsOfInvestments	1018000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	42631000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	49151000	usd
CY2022	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	136071000	usd
CY2023	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	-170764000	usd
CY2022	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	183925000	usd
CY2023	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
CY2022	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	275000	usd
CY2023	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	362000	usd
CY2022	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	987000	usd
CY2023	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	690000	usd
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
CY2023	bfin	Payments To Acquire Premises And Equipment Net PaymentsToAcquirePremisesAndEquipmentNet	1874000	usd
CY2022	bfin	Payments To Acquire Premises And Equipment Net PaymentsToAcquirePremisesAndEquipmentNet	1944000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	197923000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-316772000	usd
CY2023	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-113311000	usd
CY2022	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-113497000	usd
CY2023	bfin	Net Change In Advance Payments By Borrowers For Taxes And Insurance NetChangeInAdvancePaymentsByBorrowersForTaxesAndInsurance	329000	usd
CY2022	bfin	Net Change In Advance Payments By Borrowers For Taxes And Insurance NetChangeInAdvancePaymentsByBorrowersForTaxesAndInsurance	681000	usd
CY2023	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	35000000	usd
CY2022	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	usd
CY2023	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	10000000	usd
CY2022	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	5000000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2393000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4866000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	5056000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	5231000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-95431000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-127913000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	111713000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-435391000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	66771000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	502162000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	178484000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	66771000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	14077000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	4468000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3290000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3518000	usd
CY2023	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	22000	usd
CY2022	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	8000	usd
CY2023	bfin	Assets Transferred To Premises Held For Sale AssetsTransferredToPremisesHeldForSale	1799000	usd
CY2022	bfin	Assets Transferred To Premises Held For Sale AssetsTransferredToPremisesHeldForSale	0	usd
CY2023	bfin	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	2859000	usd
CY2022	bfin	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	791000	usd
CY2023	bfin	Bank Owned Life Insurance Death Benefit BankOwnedLifeInsuranceDeathBenefit	4500000	usd
CY2022	bfin	Bank Owned Life Insurance Death Benefit BankOwnedLifeInsuranceDeathBenefit	0	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1354000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
CY2022Q4	bfin	Factored Receivable Unpaid Principal Balance FactoredReceivableUnpaidPrincipalBalance	7000000	usd
CY2023Q4	bfin	Factored Receivable Customer Reserves FactoredReceivableCustomerReserves	2100000	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i><b>Use of Estimates</b></i>: The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Although these estimates and assumptions are based on the best available information, actual information, and actual results could differ from those estimates.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"> </p>
CY2023Q4	bfin	Factored Receivable Unpaid Principal Balance FactoredReceivableUnpaidPrincipalBalance	5900000	usd
CY2022Q4	bfin	Factored Receivable Customer Reserves FactoredReceivableCustomerReserves	1400000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	218599000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	27000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	8288000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4500000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5500000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	210338000	usd
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i><b>Reclassifications</b></i>: Certain reclassifications have been made in the prior year’s financial statements to conform to the current year’s presentation. Reclassifications had <em style="font: inherit;">no</em> effect on prior year net income or stockholders’ equity.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </p>
CY2023	us-gaap	Profit Loss ProfitLoss	9393000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	10494000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	12622882
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	13071742
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.8
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	186263000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	46000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3593000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	182716000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	119194000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	117892000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	62615000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	60454000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	181809000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	178346000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	186263000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	182716000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	2	pure
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	8987000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	13000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	198	pure
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	134306000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3580000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	200	pure
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	143293000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	3593000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	180	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	148388000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	4581000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	54	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	58835000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3707000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	234	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	207223000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	8288000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	42631000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	454000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	-0	usd
CY2022Q4	bfin	Other Foreclosed Assets Valuation Allowance Ending Balance OtherForeclosedAssetsValuationAllowanceEndingBalance	-0	usd
CY2022Q4	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	4000	usd
CY2023Q4	bfin	Other Real Estate Owned And Other Foreclosed Assets Gross OtherRealEstateOwnedAndOtherForeclosedAssetsGross	2888000	usd
CY2023Q4	bfin	Real Estate Owned And Other Foreclosed Assets Valuation Allowance Ending Balance RealEstateOwnedAndOtherForeclosedAssetsValuationAllowanceEndingBalance	111000	usd
CY2023Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	2777000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1059106000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1234872000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8345000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8129000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1050761000	usd
CY2022Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1226743000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	1700000	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	1600000	usd
CY2023	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	395000	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2229000	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	143000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8345000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	6715000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1828000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	485000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	71000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8129000	usd
CY2023Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	22049000	usd
CY2023Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1037057000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1059106000	usd
CY2023Q4	bfin	Financing Receivables Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	0	usd
CY2023Q4	bfin	Financing Receivables Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8345000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8345000	usd
CY2022Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	2712000	usd
CY2022Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1232160000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1234872000	usd
CY2022Q4	bfin	Financing Receivables Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	0	usd
CY2022Q4	bfin	Financing Receivables Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8129000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8129000	usd
CY2023Q4	bfin	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance1 ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance1	24102000	usd
CY2023Q4	bfin	Impaired Financing Receivable With No Related Allowance Recorded Investment1 ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment1	22049000	usd
CY2023Q4	bfin	Impaired Financing Receivable With No Related Allowance Partial Charge Off ImpairedFinancingReceivableWithNoRelatedAllowancePartialChargeOff	469000	usd
CY2023Q4	bfin	Impaired Financing Receivable With No Related Allowance Average Recorded Investment1 ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment1	16618000	usd
CY2023	bfin	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method1 ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod1	39000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	2831000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	2712000	usd
CY2022Q4	bfin	Impaired Financing Receivable With No Related Allowance Partial Charge Off ImpairedFinancingReceivableWithNoRelatedAllowancePartialChargeOff	49000	usd
CY2022	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	2178000	usd
CY2022	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod	103000	usd
CY2022Q4	bfin	Other Real Estate Owned And Other Foreclosed Assets Gross OtherRealEstateOwnedAndOtherForeclosedAssetsGross	476000	usd
CY2022Q4	bfin	Real Estate Owned And Other Foreclosed Assets Valuation Allowance Ending Balance RealEstateOwnedAndOtherForeclosedAssetsValuationAllowanceEndingBalance	-0	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	21331000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	1007000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1407000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	238000	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	1400000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	38000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	21331000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1059106000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1407000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1234872000	usd
CY2023Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	0	usd
CY2022Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	0	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1059106000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1234872000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	-0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	-0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	-0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	-0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	-0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	-0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	52000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	52000	usd
CY2023Q4	bfin	Other Real Estate Owned Gross OtherRealEstateOwnedGross	472000	usd
CY2023Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	67000	usd
CY2023Q4	us-gaap	Other Real Estate OtherRealEstate	405000	usd
CY2022Q4	bfin	Other Real Estate Owned Gross OtherRealEstateOwnedGross	472000	usd
CY2022Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	-0	usd
CY2022Q4	us-gaap	Other Real Estate OtherRealEstate	472000	usd
CY2023Q4	bfin	Other Foreclosed Assets Gross OtherForeclosedAssetsGross	2416000	usd
CY2023Q4	bfin	Other Foreclosed Assets Valuation Allowance Ending Balance OtherForeclosedAssetsValuationAllowanceEndingBalance	44000	usd
CY2023Q4	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	2372000	usd
CY2022Q4	bfin	Other Foreclosed Assets Gross OtherForeclosedAssetsGross	4000	usd
CY2022Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	476000	usd
CY2022Q4	us-gaap	Foreclosed Assets ForeclosedAssets	476000	usd
CY2021Q4	us-gaap	Foreclosed Assets ForeclosedAssets	725000	usd
CY2023	bfin	Foreclosed Assets Additions ForeclosedAssetsAdditions	2859000	usd
CY2022	bfin	Foreclosed Assets Additions ForeclosedAssetsAdditions	791000	usd
CY2023	bfin	Foreclosed Assets Valuation Increase During Period ForeclosedAssetsValuationIncreaseDuringPeriod	-111000	usd
CY2022	bfin	Foreclosed Assets Valuation Increase During Period ForeclosedAssetsValuationIncreaseDuringPeriod	-31000	usd
CY2023	bfin	Foreclosed Assets Valuation Reductions From Sales ForeclosedAssetsValuationReductionsFromSales	0	usd
CY2022	bfin	Foreclosed Assets Valuation Reductions From Sales ForeclosedAssetsValuationReductionsFromSales	258000	usd
CY2023	bfin	Foreclosed Assets Writedown ForeclosedAssetsWritedown	-70000	usd
CY2022	bfin	Foreclosed Assets Writedown ForeclosedAssetsWritedown	0	usd
CY2023	bfin	Foreclosed Assets Disposals ForeclosedAssetsDisposals	377000	usd
CY2022	bfin	Foreclosed Assets Disposals ForeclosedAssetsDisposals	1267000	usd
CY2023Q4	us-gaap	Foreclosed Assets ForeclosedAssets	2777000	usd
CY2022Q4	us-gaap	Foreclosed Assets ForeclosedAssets	476000	usd
CY2022Q4	bfin	Foreclosed Assets Valuation Allowance ForeclosedAssetsValuationAllowance	0	usd
CY2021Q4	bfin	Foreclosed Assets Valuation Allowance ForeclosedAssetsValuationAllowance	227000	usd
CY2023	bfin	Foreclosed Assets Valuation Allowance Valuation Increase ForeclosedAssetsValuationAllowanceValuationIncrease	111000	usd
CY2022	bfin	Foreclosed Assets Valuation Allowance Valuation Increase ForeclosedAssetsValuationAllowanceValuationIncrease	31000	usd
CY2023	bfin	Foreclosed Assets Valuation Allowance Amounts Applied ForeclosedAssetsValuationAllowanceAmountsApplied	-0	usd
CY2022	bfin	Foreclosed Assets Valuation Allowance Amounts Applied ForeclosedAssetsValuationAllowanceAmountsApplied	258000	usd
CY2023Q4	bfin	Foreclosed Assets Valuation Allowance ForeclosedAssetsValuationAllowance	111000	usd
CY2022Q4	bfin	Foreclosed Assets Valuation Allowance ForeclosedAssetsValuationAllowance	0	usd
CY2022Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	57778000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	61075000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	34828000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	36119000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	22950000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24956000	usd
CY2023	us-gaap	Depreciation Depreciation	2100000	usd
CY2022	us-gaap	Depreciation Depreciation	2000000	usd
CY2023Q4	bfin	Operating Lease Right Of Use Asset Gross OperatingLeaseRightOfUseAssetGross	7671000	usd
CY2022Q4	bfin	Operating Lease Right Of Use Asset Gross OperatingLeaseRightOfUseAssetGross	7671000	usd
CY2023	bfin	Rightofuse Asset Obtained In Exchange For Lease Obligations In Other Assets And Other Liabilities RightofuseAssetObtainedInExchangeForLeaseObligationsInOtherAssetsAndOtherLiabilities	1354000	usd
CY2022	bfin	Rightofuse Asset Obtained In Exchange For Lease Obligations In Other Assets And Other Liabilities RightofuseAssetObtainedInExchangeForLeaseObligationsInOtherAssetsAndOtherLiabilities	0	usd
CY2023Q4	bfin	Operating Lease Right Of Use Asset Accumulated Amortization OperatingLeaseRightOfUseAssetAccumulatedAmortization	5082000	usd
CY2022Q4	bfin	Operating Lease Right Of Use Asset Accumulated Amortization OperatingLeaseRightOfUseAssetAccumulatedAmortization	3964000	usd
CY2023	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1100000	usd
CY2022	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1200000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y9M18D
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	1118000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	1170000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	138000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	114000	usd
CY2023	us-gaap	Sublease Income SubleaseIncome	25000	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	28000	usd
CY2023	us-gaap	Lease Cost LeaseCost	1231000	usd
CY2022	us-gaap	Lease Cost LeaseCost	1256000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	1304000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	1296000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	1131000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	992000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	948000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	322000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	329000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	1071000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	4793000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	850000	usd
CY2023Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	260851000	usd
CY2022Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	280625000	usd
CY2023Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	306548000	usd
CY2022Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	400416000	usd
CY2023Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	297074000	usd
CY2022Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	302863000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	174759000	usd
CY2022Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	204506000	usd
CY2023Q4	bfin	Certificates Of Deposit Fair Value Disclosure CertificatesOfDepositFairValueDisclosure	222391000	usd
CY2022Q4	bfin	Certificates Of Deposit Fair Value Disclosure CertificatesOfDepositFairValueDisclosure	186524000	usd
CY2023Q4	us-gaap	Deposits Deposits	1261623000	usd
CY2022Q4	us-gaap	Deposits Deposits	1374934000	usd
CY2023Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	29400000	usd
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	24000000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	174923000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	42276000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	3952000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	108000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	1132000	usd
CY2023Q4	us-gaap	Time Deposits TimeDeposits	222391000	usd
CY2023Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.08	pure
CY2023Q4	us-gaap	Line Of Credit LineOfCredit	0	usd
CY2022Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0675	pure
CY2022Q4	us-gaap	Line Of Credit LineOfCredit	0	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	341600000	usd
CY2023Q4	bfin	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Pledgeable Us Treasury Notes FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfPledgeableUsTreasuryNotes	144900000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	0	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3012000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3578000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	347000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-237000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3359000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3341000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2678000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2905000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	633000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	501000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	48000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-65000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3359000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3341000	usd
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2634	pure
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2415	pure
CY2023Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Bad Debt Reserve For Tax Purposes Of Qualified Lender DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityBadDebtReserveForTaxPurposesOfQualifiedLender	14900000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	67000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	29000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	2170000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	2114000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	3832000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	3886000	usd
CY2023Q4	bfin	Deferred Tax Asset Lease Liability DeferredTaxAssetLeaseLiability	1025000	usd
CY2022Q4	bfin	Deferred Tax Asset Lease Liability DeferredTaxAssetLeaseLiability	964000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1349000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1231000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	922000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	2147000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	9298000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	10342000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	1051000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	1095000	usd
CY2023Q4	bfin	Deferred Tax Liabilities Purchase Accounting Adjustments DeferredTaxLiabilitiesPurchaseAccountingAdjustments	1369000	usd
CY2022Q4	bfin	Deferred Tax Liabilities Purchase Accounting Adjustments DeferredTaxLiabilitiesPurchaseAccountingAdjustments	1421000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	1025000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	964000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1032000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1061000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	309000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	321000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4786000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4862000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4512000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5480000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4500000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5500000	usd
CY2023Q4	us-gaap	Tax Credit Carryforward Valuation Allowance TaxCreditCarryforwardValuationAllowance	0	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	6700000	usd
CY2023Q4	bfin	Tax Credit Carryforwards Alternative Minimum Tax Not Subject To Expiration TaxCreditCarryforwardsAlternativeMinimumTaxNotSubjectToExpiration	225000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	305000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	283000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	63000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	73000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	51000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	324000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	305000	usd
CY2023Q4	bfin	Community Bank Leverage Ratio Actual Amount CommunityBankLeverageRatioActualAmount	161037	usd
CY2023Q4	bfin	Community Bank Leverage Ratio Actual CommunityBankLeverageRatioActual	0.1085	pure
CY2023Q4	bfin	Community Bank Leverage Ratio Capital Adequacy Minimum CommunityBankLeverageRatioCapitalAdequacyMinimum	133577	usd
CY2023Q4	bfin	Community Bank Capital Adequacy Minimum CommunityBankCapitalAdequacyMinimum	0.09	pure
CY2022Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	165252	usd
CY2022Q4	bfin	Community Bank Leverage Ratio Actual CommunityBankLeverageRatioActual	0.1031	pure
CY2022Q4	bfin	Community Bank Leverage Ratio Capital Adequacy Minimum CommunityBankLeverageRatioCapitalAdequacyMinimum	144288	usd
CY2022Q4	bfin	Community Bank Capital Adequacy Minimum CommunityBankCapitalAdequacyMinimum	0.09	pure
CY2023	bfin	Share Based Compensation And Postretirement Benefits Minimum Age Of Employee ShareBasedCompensationAndPostretirementBenefitsMinimumAgeOfEmployee	P21Y
CY2023	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.06	pure
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	333000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	274000	usd
CY2023	bfin	Commitments To Extend Credit Duration Of Extension CommitmentsToExtendCreditDurationOfExtension	P60D
CY2023Q4	bfin	Valuation Reserve On Premises Heldforsale ValuationReserveOnPremisesHeldforsale	49000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	182716000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	210338000	usd
CY2023Q4	bfin	Other Real Estate Owned Gross OtherRealEstateOwnedGross	472000	usd
CY2023Q4	bfin	Other Real Estate With Valuation Adjustments OtherRealEstateWithValuationAdjustments	67000	usd
CY2023Q4	us-gaap	Other Real Estate OtherRealEstate	405000	usd
CY2023Q3	bfin	Foreclosed Assets Gross ForeclosedAssetsGross	431000	usd
CY2023Q4	bfin	Foreclosed Assets Net Of Valuation Reserve ForeclosedAssetsNetOfValuationReserve	387000	usd
CY2023Q4	bfin	Other Foreclosed Assets Valuation Allowance OtherForeclosedAssetsValuationAllowance	111000	usd
CY2022	bfin	Foreclosed Assets Valuation Adjustments With Valuation Reserve ForeclosedAssetsValuationAdjustmentsWithValuationReserve	31000	usd
CY2023Q4	bfin	Other Real Estate Owned Fair Value Disclosure OtherRealEstateOwnedFairValueDisclosure	405000	usd
CY2023Q4	bfin	Other Real Estate Measurement Input OtherRealEstateMeasurementInput	10	pure
CY2023Q1	bfin	Valuation Reserve On Premises Heldforsale ValuationReserveOnPremisesHeldforsale	553000	usd
CY2023Q4	bfin	Valuation Reserve On Premises Heldforsale ValuationReserveOnPremisesHeldforsale	49000	usd
CY2023	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	532000	usd
CY2022	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	590000	usd
CY2023	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-454000	usd
CY2022	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	0	usd
CY2023	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	9000	usd
CY2022	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	usd
CY2023	bfin	Valuation Reserve On Premises Heldforsale ValuationReserveOnPremisesHeldforsale	602000	usd
CY2022	bfin	Valuation Reserve On Premises Heldforsale ValuationReserveOnPremisesHeldforsale	-0	usd
CY2023	bfin	Bank Owned Life Insurance Income Loss BankOwnedLifeInsuranceIncomeLoss	-346000	usd
CY2022	bfin	Bank Owned Life Insurance Income Loss BankOwnedLifeInsuranceIncomeLoss	-39000	usd
CY2023	bfin	Bank Owned Life Insurance Death Benefit Income BankOwnedLifeInsuranceDeathBenefitIncome	0	usd
CY2022	bfin	Bank Owned Life Insurance Death Benefit Income BankOwnedLifeInsuranceDeathBenefitIncome	446000	usd
CY2023	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	680000	usd
CY2022	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	555000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	4417000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	5976000	usd
CY2023	dei	Auditor Firm AuditorFirmId	49

Files In Submission

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bfin-20231231.xsd	Edgar Link	pending
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$BFIN
BankFinancial CORP Stock $bfin

2024 Q1 Form 10-K Financial Statement

#000143774924006272 Filed on March 01, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BFIN BankFinancial CORP Stock $bfin

2024 Q1 Form 10-K Financial Statement

#000143774924006272 Filed on March 01, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BFIN
BankFinancial CORP Stock $bfin