$FSBW
FS Bancorp, Inc. Stock $fsbw

$fsbw Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000143774924016017 Filed on May 10, 2024

Income Statement

Concept	2024 Q2	2024 Q1	2023 Q1
Revenue	$1.173M	$1.127M	$914.0K
YoY Change	-7.64%	23.3%	-96.29%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$3.519M	$3.008M	$2.692M
YoY Change	-3.4%	11.74%	8.59%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.939M	$2.835M	$3.358M
YoY Change	2.73%	-15.57%	-21.71%
% of Gross Profit
Operating Expenses	$3.519M	$3.008M	$2.692M
YoY Change	-3.4%	11.74%	8.59%
Operating Profit
YoY Change
Interest Expense		$14.53M	$7.950M
YoY Change		82.82%	317.54%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$11.34M	$10.53M	$10.25M
YoY Change	-1.13%	2.73%	20.75%
Income Tax	$2.376M	$2.132M	$2.037M
% Of Pretax Income	20.96%	20.25%	19.88%
Net Earnings	$8.959M	$8.397M	$8.212M
YoY Change	-1.72%	2.25%	19.53%
Net Earnings / Revenue	763.77%	745.08%	898.47%
Basic Earnings Per Share	$1.15	$1.07	$1.06
Diluted Earnings Per Share	$1.13	$1.06	$1.06
COMMON SHARES
Basic Shares Outstanding	7.796M	7.806M	7.738M
Diluted Shares Outstanding	7.796M	7.824M	7.778M

Balance Sheet

Concept	2024 Q2	2024 Q1	2023 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$33.01M	$45.41M	$58.18M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$30.00M	$30.33M	$39.20M
YoY Change	-4.14%	-22.63%	50.08%
Goodwill	$3.600M	$3.592M	$3.592M
YoY Change	0.0%	0.0%	55.36%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$4.590M	$4.832M	$5.860M
YoY Change	-20.64%	-17.54%	124.44%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$2.941B	$2.970B	$2.783B
YoY Change	1.23%	6.72%	22.38%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$5.979M	$6.410M	$7.651M
YoY Change	-22.25%	-16.22%	41.53%
Deferred Revenue
YoY Change
Short-Term Debt	$181.9M	$129.9M
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$5.979M	$6.410M	$7.651M
YoY Change	-22.25%	-16.22%	41.53%
LONG-TERM LIABILITIES
Long-Term Debt	$49.56M	$49.54M	$49.48M
YoY Change	0.14%	0.14%	0.13%
Other Long-Term Liabilities	$37.11M	$40.58M	$33.05M
YoY Change	11.45%	22.81%	18.65%
Total Long-Term Liabilities	$86.67M	$90.13M	$82.52M
YoY Change	4.69%	9.21%	6.81%
TOTAL LIABILITIES
Total Short-Term Liabilities	$5.979M	$6.410M	$7.651M
Total Long-Term Liabilities	$86.67M	$90.13M	$82.52M
Total Liabilities	$2.657B	$2.692B	$2.541B
YoY Change	0.06%	5.93%	24.68%
SHAREHOLDERS EQUITY
Retained Earnings	$243.7M	$236.7M	$208.3M
YoY Change	13.05%	13.62%	12.77%
Common Stock	$77.00K	$78.00K	$56.22M
YoY Change	-99.86%	-99.86%	-13.67%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$284.0M	$277.9M	$241.8M
YoY Change
Total Liabilities & Shareholders Equity	$2.941B	$2.970B	$2.783B
YoY Change	1.23%	6.72%	22.38%

Cashflow Statement

Concept	2024 Q2	2024 Q1	2023 Q1
OPERATING ACTIVITIES
Net Income	$8.959M	$8.397M	$8.212M
YoY Change	-1.72%	2.25%	19.53%
Depreciation, Depletion And Amortization	$2.939M	$2.835M	$3.358M
YoY Change	2.73%	-15.57%	-21.71%
Cash From Operating Activities	$10.09M	$277.0K	$18.47M
YoY Change	-57.38%	-98.5%	-81.14%
INVESTING ACTIVITIES
Capital Expenditures	$275.0K	$357.0K	$954.0K
YoY Change	72.96%	-62.58%	496.25%
Acquisitions
YoY Change
Other Investing Activities	$12.49M	$2.920M	$289.3M
YoY Change	-120.06%	-98.99%	-433.76%
Cash From Investing Activities	$12.22M	$2.563M	$288.4M
YoY Change	-119.57%	-99.11%	-432.05%
FINANCING ACTIVITIES
Cash Dividend Paid			$1.935M
YoY Change			18.42%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-34.70M	-$23.13M	-290.1M
YoY Change	-130.8%	-92.03%	3531.41%
NET CHANGE
Cash From Operating Activities	10.09M	$277.0K	18.47M
Cash From Investing Activities	12.22M	$2.563M	288.4M
Cash From Financing Activities	-34.70M	-$23.13M	-290.1M
Net Change In Cash	-12.40M	-$20.29M	16.74M
YoY Change	-116.77%	-221.15%	437.53%
FREE CASH FLOW
Cash From Operating Activities	$10.09M	$277.0K	$18.47M
Capital Expenditures	$275.0K	$357.0K	$954.0K
Free Cash Flow	$9.819M	-$80.00K	$17.52M
YoY Change	-58.26%	-100.46%	-82.09%

Facts In Submission

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CY2024Q1	dei	Document Period End Date DocumentPeriodEndDate	2024-03-31
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CY2024Q1	dei	Entity File Number EntityFileNumber	001-35589
CY2024Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WA
CY2024Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	45-4585178
CY2024Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	6920 220th Street SW
CY2024Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Mountlake Terrace
CY2024Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	WA
CY2024Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	98043
CY2024Q1	dei	City Area Code CityAreaCode	425
CY2024Q1	dei	Local Phone Number LocalPhoneNumber	771‑5299
CY2024Q1	dei	Security12b Title Security12bTitle	Common Stock, par value $.01 per share
CY2024Q1	dei	Trading Symbol TradingSymbol	FSBW
CY2024Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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CY2023Q1	us-gaap	Fee Income FeeIncome	2608000	usd
CY2024Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1838000	usd
CY2023Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1476000	usd
CY2024Q1	fsbw	Gain Loss On Disposition Of Mortgage Servicing Rights Msr GainLossOnDispositionOfMortgageServicingRightsMsr	8215000	usd
CY2023Q1	fsbw	Gain Loss On Disposition Of Mortgage Servicing Rights Msr GainLossOnDispositionOfMortgageServicingRightsMsr	0	usd
CY2024Q1	us-gaap	Debt And Equity Securities Realized Gain Loss DebtAndEquitySecuritiesRealizedGainLoss	-7998000	usd
CY2023Q1	us-gaap	Debt And Equity Securities Realized Gain Loss DebtAndEquitySecuritiesRealizedGainLoss	0	usd
CY2024Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	240000	usd
CY2023Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	221000	usd
CY2024Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	264000	usd
CY2023Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	914000	usd
CY2024Q1	us-gaap	Noninterest Income NoninterestIncome	5111000	usd
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	5219000	usd
CY2024Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	13557000	usd
CY2023Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	13864000	usd
CY2024Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3008000	usd
CY2023Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	2692000	usd
CY2024Q1	us-gaap	Occupancy Net OccupancyNet	1705000	usd
CY2023Q1	us-gaap	Occupancy Net OccupancyNet	1520000	usd
CY2024Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1958000	usd
CY2023Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1568000	usd
CY2024Q1	us-gaap	Loan Processing Fee LoanProcessingFee	585000	usd
CY2023Q1	us-gaap	Loan Processing Fee LoanProcessingFee	470000	usd
CY2024Q1	us-gaap	Professional Fees ProfessionalFees	923000	usd
CY2023Q1	us-gaap	Professional Fees ProfessionalFees	678000	usd
CY2024Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	532000	usd
CY2023Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	580000	usd
CY2024Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	227000	usd
CY2023Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	190000	usd
CY2024Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2023Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1501000	usd
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	941000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	459000	usd
CY2024Q1	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	93000	usd
CY2023Q1	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	2000	usd
CY2024Q1	us-gaap	Noninterest Expense NoninterestExpense	23529000	usd
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	23524000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10529000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10249000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2132000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2037000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	8397000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8212000	usd
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.07
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	8397000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8212000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-2552000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	6136000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-549000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1320000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-7998000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-0	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-1719000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	5050000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-1517000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	1086000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-322000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	1722000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	907000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	370000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	195000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6888000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2909000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15285000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	11121000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	231697000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8212000	usd
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1935000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	654000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	271000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	-0	usd
CY2023Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	16000	usd
CY2023Q1	fsbw	Stock Issued During Period Value Stock Options Exercised Net StockIssuedDuringPeriodValueStockOptionsExercisedNet	-42000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2909000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	241834000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	264488000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	8397000	usd
CY2024Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2031000	usd
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	395000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	302000	usd
CY2024Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	-0	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	-0	usd
CY2024Q1	fsbw	Stock Issued During Period Value Stock Options Exercised Net StockIssuedDuringPeriodValueStockOptionsExercisedNet	507000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6888000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	277932000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	8397000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8212000	usd
CY2024Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1399000	usd
CY2023Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	2108000	usd
CY2024Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	2835000	usd
CY2023Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	3358000	usd
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	395000	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	654000	usd
CY2024Q1	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	240000	usd
CY2023Q1	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	221000	usd
CY2024Q1	fsbw	Gain Loss On Sale Of Loans Held For Sale GainLossOnSaleOfLoansHeldForSale	1838000	usd
CY2023Q1	fsbw	Gain Loss On Sale Of Loans Held For Sale GainLossOnSaleOfLoansHeldForSale	1476000	usd
CY2024Q1	fsbw	Gain Loss On Disposition Of Mortgage Servicing Rights Msr GainLossOnDispositionOfMortgageServicingRightsMsr	8215000	usd
CY2023Q1	fsbw	Gain Loss On Disposition Of Mortgage Servicing Rights Msr GainLossOnDispositionOfMortgageServicingRightsMsr	-0	usd
CY2024Q1	us-gaap	Debt And Equity Securities Realized Gain Loss DebtAndEquitySecuritiesRealizedGainLoss	-7998000	usd
CY2023Q1	us-gaap	Debt And Equity Securities Realized Gain Loss DebtAndEquitySecuritiesRealizedGainLoss	-0	usd
CY2024Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	109554000	usd
CY2023Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	73050000	usd
CY2024Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	94874000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	78316000	usd
CY2024Q1	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	93000	usd
CY2023Q1	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	2000	usd
CY2024Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	450000	usd
CY2023Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	662000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	496000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	470000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5079000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1700000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	277000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	18471000	usd
CY2024Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	44036000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2024Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	4293000	usd
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2497000	usd
CY2024Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	38009000	usd
CY2023Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	-0	usd
CY2024Q1	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	1925000	usd
CY2023Q1	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	0	usd
CY2024Q1	us-gaap	Payments To Acquire Restricted Certificates Of Deposit PaymentsToAcquireRestrictedCertificatesOfDeposit	980000	usd
CY2023Q1	us-gaap	Payments To Acquire Restricted Certificates Of Deposit PaymentsToAcquireRestrictedCertificatesOfDeposit	-0	usd
CY2024Q1	fsbw	Payments For Origination Of Loans And Principle Collections Net PaymentsForOriginationOfLoansAndPrincipleCollectionsNet	8226000	usd
CY2023Q1	fsbw	Payments For Origination Of Loans And Principle Collections Net PaymentsForOriginationOfLoansAndPrincipleCollectionsNet	55269000	usd
CY2024Q1	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	usd
CY2023Q1	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	336157000	usd
CY2024Q1	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	16168000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	0	usd
CY2024Q1	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	15492000	usd
CY2023Q1	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	829000	usd
CY2024Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	357000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	954000	usd
CY2024Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	795000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-6748000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2563000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	288350000	usd
CY2024Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-57083000	usd
CY2023Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-109439000	usd
CY2024Q1	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	175000000	usd
CY2023Q1	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	382500000	usd
CY2024Q1	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	138806000	usd
CY2023Q1	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	561500000	usd
CY2024Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	2031000	usd
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1935000	usd
CY2024Q1	fsbw	Proceeds Disbursements From Stock Options Exercised ProceedsDisbursementsFromStockOptionsExercised	-507000	usd
CY2023Q1	fsbw	Proceeds Disbursements From Stock Options Exercised ProceedsDisbursementsFromStockOptionsExercised	42000	usd
CY2024Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	-0	usd
CY2023Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	16000	usd
CY2024Q1	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	302000	usd
CY2023Q1	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	271000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-23125000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-290077000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-20285000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	16744000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	65691000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	41437000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	45406000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	58181000	usd
CY2024Q1	us-gaap	Interest Paid Net InterestPaidNet	12087000	usd
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	7064000	usd
CY2024Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	0	usd
CY2023Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	0	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Gain Loss DebtSecuritiesAvailableForSaleUnrealizedGainLoss	5446000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Gain Loss DebtSecuritiesAvailableForSaleUnrealizedGainLoss	6136000	usd
CY2024Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	3324000	usd
CY2023Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-2424000	usd
CY2024Q1	fsbw	Unrealized Gain Loss On Portfolio Loans Measured Under Fair Value Option UnrealizedGainLossOnPortfolioLoansMeasuredUnderFairValueOption	2000	usd
CY2023Q1	fsbw	Unrealized Gain Loss On Portfolio Loans Measured Under Fair Value Option UnrealizedGainLossOnPortfolioLoansMeasuredUnderFairValueOption	577000	usd
CY2024Q1	fsbw	Retention Of Gross Mortgage Servicing Rights From Loan Sales RetentionOfGrossMortgageServicingRightsFromLoanSales	576000	usd
CY2023Q1	fsbw	Retention Of Gross Mortgage Servicing Rights From Loan Sales RetentionOfGrossMortgageServicingRightsFromLoanSales	405000	usd
CY2024Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
CY2023Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1574000	usd
CY2024Q1	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	0	usd
CY2023Q1	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	87512000	usd
CY2024Q1	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	0	usd
CY2023Q1	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	424949000	usd
CY2024Q1	fsbw	Number Of Bank Branches NumberOfBankBranches	27	pure
CY2024Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	pure
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	309959000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	325000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	30641000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	279643000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2024Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	8500000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2024Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	715000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	7785000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	45000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity Amortized Cost Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAmortizedCostBeforeAllowanceForCreditLoss	318459000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity Cumulative Unrecognized Gain DebtSecuritiesAvailableForSaleAndHeldToMaturityCumulativeUnrecognizedGain	325000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity Cumulative Unrecognized Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityCumulativeUnrecognizedLoss	31356000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity Fair Value DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue	287428000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAllowanceForCreditLoss	45000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	328695000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	939000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	36701000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	292933000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	8500000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	834000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	7666000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	45000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity Amortized Cost Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAmortizedCostBeforeAllowanceForCreditLoss	337195000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity Cumulative Unrecognized Gain DebtSecuritiesAvailableForSaleAndHeldToMaturityCumulativeUnrecognizedGain	939000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity Cumulative Unrecognized Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityCumulativeUnrecognizedLoss	37535000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity Fair Value DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue	300599000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity Allowance For Credit Loss DebtSecuritiesAvailableForSaleAndHeldToMaturityAllowanceForCreditLoss	45000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	45000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	31000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2023Q1	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	45000	usd
CY2023Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	31000	usd
CY2024Q1	us-gaap	Debt Securities Held To Maturity Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestBeforeAllowanceForCreditLoss	117000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestBeforeAllowanceForCreditLoss	116000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	1900000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	1500000	usd
CY2024Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	8500000	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	8500000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Nonaccrual DebtSecuritiesHeldToMaturityNonaccrual	0	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	79874000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	816000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	165595000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	29825000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	245469000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	30641000	usd
CY2024Q1	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Fair Value1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsFairValue1	0	usd
CY2024Q1	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss1	-0	usd
CY2024Q1	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Fair Value1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerFairValue1	7785000	usd
CY2024Q1	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss1	715000	usd
CY2024Q1	fsbw	Debt Securities Heldtomaturity Unrealized Loss Position Fair Value1 DebtSecuritiesHeldtomaturityUnrealizedLossPositionFairValue1	7785000	usd
CY2024Q1	fsbw	Debt Securities Heldtomaturity Unrealized Loss Position Accumulated Loss1 DebtSecuritiesHeldtomaturityUnrealizedLossPositionAccumulatedLoss1	715000	usd
CY2024Q1	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Fair Value DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsFairValue	79874000	usd
CY2024Q1	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	816000	usd
CY2024Q1	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Fair Value DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerFairValue	173380000	usd
CY2024Q1	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	30540000	usd
CY2024Q1	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Fair Value Total DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionFairValueTotal	253254000	usd
CY2024Q1	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Accumulated Loss Total DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionAccumulatedLossTotal	31356000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	58754000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	637000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	209362000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	36064000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	268116000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	36701000	usd
CY2023Q4	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Fair Value1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsFairValue1	0	usd
CY2023Q4	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss1	-0	usd
CY2023Q4	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Fair Value1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerFairValue1	7666000	usd
CY2023Q4	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss1 DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss1	834000	usd
CY2023Q4	fsbw	Debt Securities Heldtomaturity Unrealized Loss Position Fair Value1 DebtSecuritiesHeldtomaturityUnrealizedLossPositionFairValue1	7666000	usd
CY2023Q4	fsbw	Debt Securities Heldtomaturity Unrealized Loss Position Accumulated Loss1 DebtSecuritiesHeldtomaturityUnrealizedLossPositionAccumulatedLoss1	834000	usd
CY2023Q4	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Fair Value DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsFairValue	58754000	usd
CY2023Q4	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	637000	usd
CY2023Q4	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Fair Value DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerFairValue	217028000	usd
CY2023Q4	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	36898000	usd
CY2023Q4	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Fair Value Total DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionFairValueTotal	275782000	usd
CY2023Q4	fsbw	Debt Securities Availableforsale And Heldtomaturity Continuous Unrealized Loss Position Accumulated Loss Total DebtSecuritiesAvailableforsaleAndHeldtomaturityContinuousUnrealizedLossPositionAccumulatedLossTotal	37535000	usd
CY2024Q1	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	0	pure
CY2024Q1	fsbw	Debt Securities Heldtomaturity Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	7	pure
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	34	pure
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	128	pure
CY2023	fsbw	Expected Credit Losses On Investments ExpectedCreditLossesOnInvestments	0	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	309959000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	279643000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	328695000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	292933000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	8500000	usd
CY2024Q1	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	7785000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	8500000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	7666000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	318459000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale And Held To Maturity Fair Value DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue	287428000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity DebtSecuritiesAvailableForSaleAndHeldToMaturity	337195000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale And Held To Maturity Fair Value DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue	300599000	usd
CY2024Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	44036000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2024Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	2446858000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	2433015000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	31479000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	31534000	usd
CY2024Q1	us-gaap	Notes Receivable Net NotesReceivableNet	2415379000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	2401481000	usd
CY2024Q1	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	-7500000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	-8400000	usd
CY2024Q1	us-gaap	Financing Receivable Unamortized Purchase Premium Discount FinancingReceivableUnamortizedPurchasePremiumDiscount	2400000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Purchase Premium Discount FinancingReceivableUnamortizedPurchasePremiumDiscount	2600000	usd
CY2024Q1	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	11600000	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	11500000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	31534000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	1421000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	1894000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	418000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff After Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery	1476000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	31479000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	27992000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	2355000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	720000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	310000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff After Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery	410000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	29937000	usd
CY2024Q1	fsbw	Financing Receivable Modified Subsequent Default Number Of Contracts FinancingReceivableModifiedSubsequentDefaultNumberOfContracts	0	pure
CY2024Q1	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0	usd
CY2024Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	2446858000	usd
CY2024Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	12106000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	2433015000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	10952000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	91962000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	499895000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	627367000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	451952000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	252327000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	315051000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	208206000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	98000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2446858000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	244000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	580000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	234000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	45000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	346000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	445000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	1894000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	491485000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	674717000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	464272000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	257540000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	134306000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	196511000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	213241000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	943000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	2433015000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	204000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	1435000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	673000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	290000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	152000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	592000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	130000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	3476000	usd
CY2024Q1	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	1737000	usd
CY2024Q1	fsbw	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	10369000	usd
CY2024Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	12106000	usd
CY2023Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	1357000	usd
CY2023Q4	fsbw	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	9595000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	10952000	usd
CY2024Q1	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	111000	usd
CY2023Q1	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	62000	usd
CY2024Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	474000	usd
CY2023Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	409000	usd
CY2024Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3000	usd
CY2023Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4000	usd
CY2024Q1	us-gaap	Lease Cost LeaseCost	477000	usd
CY2023Q1	us-gaap	Lease Cost LeaseCost	413000	usd
CY2024Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	490000	usd
CY2023Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	424000	usd
CY2024Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y9M18D
CY2023Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y7M6D
CY2024Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0297	pure
CY2023Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0283	pure
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1446000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1628000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1475000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1173000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	428000	usd
CY2024Q1	fsbw	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	954000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	7104000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	694000	usd
CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	6410000	usd
CY2023Q4	us-gaap	Other Real Estate OtherRealEstate	0	usd
CY2022Q4	us-gaap	Other Real Estate OtherRealEstate	570000	usd
CY2024Q1	us-gaap	Other Real Estate Additions OtherRealEstateAdditions	0	usd
CY2023Q1	us-gaap	Other Real Estate Additions OtherRealEstateAdditions	0	usd
CY2024Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	usd
CY2023Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	usd
CY2024Q1	us-gaap	Other Real Estate OtherRealEstate	0	usd
CY2023Q1	us-gaap	Other Real Estate OtherRealEstate	570000	usd
CY2024Q1	us-gaap	Noninterest Bearing Domestic Deposit Checking NoninterestBearingDomesticDepositChecking	618526000	usd
CY2023Q4	us-gaap	Noninterest Bearing Domestic Deposit Checking NoninterestBearingDomesticDepositChecking	654048000	usd
CY2024Q1	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	188050000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	244028000	usd
CY2024Q1	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	153025000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	151630000	usd
CY2024Q1	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	364944000	usd
CY2023Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	359063000	usd
CY2024Q1	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	579153000	usd
CY2023Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	587858000	usd
CY2024Q1	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	424463000	usd
CY2023Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	429373000	usd
CY2024Q1	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	108763000	usd
CY2023Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	79540000	usd
CY2024Q1	fsbw	Noninterestbearing Deposit Escrow For Mortgages Serviced NoninterestbearingDepositEscrowForMortgagesServiced	28373000	usd
CY2023Q4	fsbw	Noninterestbearing Deposit Escrow For Mortgages Serviced NoninterestbearingDepositEscrowForMortgagesServiced	16783000	usd
CY2024Q1	us-gaap	Deposits Deposits	2465297000	usd
CY2023Q4	us-gaap	Deposits Deposits	2522323000	usd
CY2024Q1	us-gaap	Time Deposit Maturities Remainder Of Fiscal Year TimeDepositMaturitiesRemainderOfFiscalYear	776564000	usd
CY2024Q1	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	267538000	usd
CY2024Q1	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	44267000	usd
CY2024Q1	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	21324000	usd
CY2024Q1	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	2258000	usd
CY2024Q1	fsbw	Time Deposit Maturities After Year Four TimeDepositMaturitiesAfterYearFour	428000	usd
CY2024Q1	us-gaap	Time Deposits TimeDeposits	1112379000	usd
CY2024Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Checking InterestExpenseDomesticDepositLiabilitiesChecking	784000	usd
CY2023Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Checking InterestExpenseDomesticDepositLiabilitiesChecking	98000	usd
CY2024Q1	fsbw	Interest Expense Money Market Accounts And Savings Deposits InterestExpenseMoneyMarketAccountsAndSavingsDeposits	1661000	usd
CY2023Q1	fsbw	Interest Expense Money Market Accounts And Savings Deposits InterestExpenseMoneyMarketAccountsAndSavingsDeposits	1198000	usd
CY2024Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Certificates Of Deposit InterestExpenseDomesticDepositLiabilitiesCertificatesOfDeposit	10437000	usd
CY2023Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Certificates Of Deposit InterestExpenseDomesticDepositLiabilitiesCertificatesOfDeposit	5328000	usd
CY2024Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	12882000	usd
CY2023Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6624000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	8397000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8212000	usd
CY2024Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	131000	usd
CY2023Q1	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	147000	usd
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	8266000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	8065000	usd
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7703789
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7623580
CY2024Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	120671
CY2023Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	154838
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7824460
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7778418
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.07
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
CY2024Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	28102
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	37227
CY2024Q1	us-gaap	Banking Regulation Capital Conservation Buffer Capital Conserved Minimum BankingRegulationCapitalConservationBufferCapitalConservedMinimum	0.025	pure
CY2024Q1	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.092	pure
CY2024Q1	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.109	pure
CY2024Q1	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.141	pure
CY2024Q1	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.109	pure
CY2023Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.09	pure
CY2023Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.105	pure
CY2023Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.137	pure
CY2023Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.105	pure
CY2024Q1	fsbw	Number Of Bank Branches NumberOfBankBranches	27	pure
CY2024Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	30346000	usd
CY2024Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1399000	usd
CY2024Q1	us-gaap	Noninterest Income NoninterestIncome	5111000	usd
CY2024Q1	us-gaap	Noninterest Expense NoninterestExpense	23529000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10529000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2132000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	8397000	usd
CY2024Q1	us-gaap	Assets Average Outstanding AssetsAverageOutstanding	2958547000	usd
CY2023Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	30662000	usd
CY2023Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	2108000	usd
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	5219000	usd
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	23524000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10249000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2037000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	8212000	usd
CY2023Q1	us-gaap	Assets Average Outstanding AssetsAverageOutstanding	2742026000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	3600000	usd
CY2024Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	941000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	459000	usd
CY2024Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1127000	usd
CY2023Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	914000	usd
CY2024Q1	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	3984000	usd
CY2023Q1	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	4305000	usd
CY2024Q1	us-gaap	Noninterest Income NoninterestIncome	5111000	usd
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	5219000	usd

Files In Submission

Name	View Source	Status
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0001437749-24-016017-index.html	Edgar Link	pending
0001437749-24-016017.txt	Edgar Link	pending
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$FSBW
FS Bancorp, Inc. Stock $fsbw

2024 Q2 Form 10-Q Financial Statement

#000143774924016017 Filed on May 10, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FSBW FS Bancorp, Inc. Stock $fsbw

2024 Q2 Form 10-Q Financial Statement

#000143774924016017 Filed on May 10, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FSBW
FS Bancorp, Inc. Stock $fsbw