$FFNW
First Financial Northwest, Inc. Stock $ffnw

$ffnw Overview Financials Valuation SEC Filings Company Website

2022 Q4 Form 10-Q Financial Statement

#000093905722000349 Filed on November 10, 2022

Income Statement

Concept	2022 Q4	2022 Q3
Revenue		$778.0K
YoY Change		-22.12%
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	$511.0K	$537.0K
YoY Change	-7.09%	-0.56%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$2.718M
YoY Change		33.04%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$3.997M	$4.881M
YoY Change	17.91%	23.35%
Income Tax	$771.0K	$935.0K
% Of Pretax Income	19.29%	19.16%
Net Earnings	$3.215M	$3.946M
YoY Change	17.34%	23.35%
Net Earnings / Revenue		507.2%
Basic Earnings Per Share		$0.44
Diluted Earnings Per Share	$0.35	$0.43
COMMON SHARES
Basic Shares Outstanding	9.128M shares	9.088M shares
Diluted Shares Outstanding		9.069M shares

Balance Sheet

Concept	2022 Q4	2022 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$24.32M	$24.91M
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	$21.19M	$21.61M
YoY Change	-5.56%	-4.51%
Goodwill	$889.0K	$889.0K
YoY Change	0.0%	0.0%
Intangibles	$548.0K	$582.0K
YoY Change	-19.88%	-19.05%
Long-Term Investments
YoY Change
Other Assets	$2.597M	$2.355M
YoY Change	188.56%	236.43%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$1.503B	$1.484B
YoY Change	5.37%	3.06%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$328.0K	$185.0K
YoY Change	228.0%	-7.5%
Accrued Expenses	$3.454M	$3.441M
YoY Change	-9.11%	-13.98%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$3.782M	$3.626M
YoY Change	-3.03%	-13.67%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$20.68M	$18.33M
YoY Change	124.82%	138.0%
Total Long-Term Liabilities	$20.68M	$18.33M
YoY Change	124.82%	138.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.782M	$3.626M
Total Long-Term Liabilities	$20.68M	$18.33M
Total Liabilities	$1.343B	$1.326B
YoY Change	5.84%	3.73%
SHAREHOLDERS EQUITY
Retained Earnings	$95.06M	$92.93M
YoY Change	10.33%	10.1%
Common Stock	$91.00K	$91.00K
YoY Change	0.0%	-4.21%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$160.4M	$157.9M
YoY Change
Total Liabilities & Shareholders Equity	$1.503B	$1.484B
YoY Change	5.37%	3.06%

Cashflow Statement

Concept	2022 Q4	2022 Q3
OPERATING ACTIVITIES
Net Income	$3.215M	$3.946M
YoY Change	17.34%	23.35%
Depreciation, Depletion And Amortization	$511.0K	$537.0K
YoY Change	-7.09%	-0.56%
Cash From Operating Activities	$4.790M	$8.105M
YoY Change	12.44%	17.46%
INVESTING ACTIVITIES
Capital Expenditures	$96.00K	-$290.0K
YoY Change	-126.67%	-51.67%
Acquisitions
YoY Change
Other Investing Activities	-$19.79M	-$42.42M
YoY Change	-383.58%	315.51%
Cash From Investing Activities	-$19.89M	-$42.71M
YoY Change	-400.45%	295.13%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	14.51M	23.87M
YoY Change	-187.4%	589.83%
NET CHANGE
Cash From Operating Activities	4.790M	8.105M
Cash From Investing Activities	-19.89M	-42.71M
Cash From Financing Activities	14.51M	23.87M
Net Change In Cash	-591.0K	-10.74M
YoY Change	-89.67%	2286.89%
FREE CASH FLOW
Cash From Operating Activities	$4.790M	$8.105M
Capital Expenditures	$96.00K	-$290.0K
Free Cash Flow	$4.694M	$8.395M
YoY Change	1.6%	11.93%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001401564
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2022-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-33652
	dei	Entity Registrant Name EntityRegistrantName	FIRST FINANCIAL NORTHWEST, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	26-0610707
	dei	Entity Address Address Line1 EntityAddressAddressLine1	201 Wells Avenue South
	dei	Entity Address City Or Town EntityAddressCityOrTown	Renton
	dei	Entity Address State Or Province EntityAddressStateOrProvince	WA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	98057
	dei	City Area Code CityAreaCode	(425)
	dei	Local Phone Number LocalPhoneNumber	255-4400
	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value per share
	dei	Trading Symbol TradingSymbol	FFNW
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2022Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	9127595	shares
CY2022Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	9684000	usd
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	7246000	usd
CY2022Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	15227000	usd
CY2021Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	66145000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	221278000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	168948000	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	2438000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	2432000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	14726000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	15657000	usd
CY2022Q3	us-gaap	Notes Receivable Net NotesReceivableNet	1143348000	usd
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1103461000	usd
CY2022Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	7712000	usd
CY2021Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	5465000	usd
CY2022Q3	us-gaap	Interest Receivable InterestReceivable	6261000	usd
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	5285000	usd
CY2022Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2355000	usd
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	850000	usd
CY2022Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21608000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	22440000	usd
CY2022Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	36064000	usd
CY2021Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	35210000	usd
CY2022Q3	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	13605000	usd
CY2021Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	3628000	usd
CY2022Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3260000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3646000	usd
CY2022Q3	us-gaap	Goodwill Goodwill	889000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	889000	usd
CY2022Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	582000	usd
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	684000	usd
CY2022Q3	us-gaap	Assets Assets	1484311000	usd
CY2021Q4	us-gaap	Assets Assets	1426329000	usd
CY2022Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	118842000	usd
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	117751000	usd
CY2022Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1030594000	usd
CY2021Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1039723000	usd
CY2022Q3	us-gaap	Deposits Deposits	1149436000	usd
CY2021Q4	us-gaap	Deposits Deposits	1157474000	usd
CY2022Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	150000000	usd
CY2021Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	95000000	usd
CY2022Q3	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	5033000	usd
CY2021Q4	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	2909000	usd
CY2022Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	3441000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	3805000	usd
CY2022Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	185000	usd
CY2021Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	112000	usd
CY2022Q3	us-gaap	Other Liabilities OtherLiabilities	18326000	usd
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	9150000	usd
CY2022Q3	us-gaap	Liabilities Liabilities	1326421000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	1268450000	usd
CY2022Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2022Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2022Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	9127595	shares
CY2022Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9127595	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	9125759	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9125759	shares
CY2022Q3	us-gaap	Common Stock Value CommonStockValue	91000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	91000	usd
CY2022Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	72295000	usd
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	72298000	usd
CY2022Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	92928000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	86162000	usd
CY2022Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7424000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	174000	usd
CY2022Q3	us-gaap	Unearned Esop Shares UnearnedESOPShares	0	usd
CY2021Q4	us-gaap	Unearned Esop Shares UnearnedESOPShares	846000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	157890000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	157879000	usd
CY2022Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1484311000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1426329000	usd
CY2022Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	13618000	usd
CY2021Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	12508000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	37893000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	37772000	usd
CY2022Q3	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	1609000	usd
CY2021Q3	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	818000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	3595000	usd
	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	2420000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	125000	usd
CY2021Q3	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	24000	usd
	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	181000	usd
	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	53000	usd
CY2022Q3	ffnw	Investment Income Dividendsfrom Fhlb InvestmentIncomeDividendsfromFHLB	83000	usd
CY2021Q3	ffnw	Investment Income Dividendsfrom Fhlb InvestmentIncomeDividendsfromFHLB	84000	usd
	ffnw	Investment Income Dividendsfrom Fhlb InvestmentIncomeDividendsfromFHLB	228000	usd
	ffnw	Investment Income Dividendsfrom Fhlb InvestmentIncomeDividendsfromFHLB	247000	usd
CY2022Q3	us-gaap	Interest Income Operating InterestIncomeOperating	15435000	usd
CY2021Q3	us-gaap	Interest Income Operating InterestIncomeOperating	13434000	usd
	us-gaap	Interest Income Operating InterestIncomeOperating	41897000	usd
	us-gaap	Interest Income Operating InterestIncomeOperating	40492000	usd
CY2022Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2326000	usd
CY2021Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1612000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	4982000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	5826000	usd
CY2022Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	392000	usd
CY2021Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	431000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	1006000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	1263000	usd
CY2022Q3	us-gaap	Interest Expense InterestExpense	2718000	usd
CY2021Q3	us-gaap	Interest Expense InterestExpense	2043000	usd
	us-gaap	Interest Expense InterestExpense	5988000	usd
	us-gaap	Interest Expense InterestExpense	7089000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	12717000	usd
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11391000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	35909000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	33403000	usd
CY2022Q3	ffnw	Recaptureof Provisionfor Loanand Lease Losses RecaptureofProvisionforLoanandLeaseLosses	400000	usd
CY2021Q3	ffnw	Recaptureof Provisionfor Loanand Lease Losses RecaptureofProvisionforLoanandLeaseLosses	-100000	usd
	ffnw	Recaptureof Provisionfor Loanand Lease Losses RecaptureofProvisionforLoanandLeaseLosses	900000	usd
	ffnw	Recaptureof Provisionfor Loanand Lease Losses RecaptureofProvisionforLoanandLeaseLosses	300000	usd
CY2022Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	13117000	usd
CY2021Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	11291000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	36809000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	33703000	usd
CY2022Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	243000	usd
CY2021Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	377000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	782000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	891000	usd
CY2022Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	89000	usd
CY2021Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	64000	usd
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	276000	usd
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	391000	usd
CY2022Q3	ffnw	Deposit Fees DepositFees	245000	usd
CY2021Q3	ffnw	Deposit Fees DepositFees	228000	usd
	ffnw	Deposit Fees DepositFees	705000	usd
	ffnw	Deposit Fees DepositFees	654000	usd
CY2022Q3	ffnw	Loan Revenue LoanRevenue	195000	usd
CY2021Q3	ffnw	Loan Revenue LoanRevenue	300000	usd
	ffnw	Loan Revenue LoanRevenue	748000	usd
	ffnw	Loan Revenue LoanRevenue	714000	usd
CY2022Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	6000	usd
CY2021Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	30000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	17000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	86000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	778000	usd
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	999000	usd
	us-gaap	Noninterest Income NoninterestIncome	2528000	usd
	us-gaap	Noninterest Income NoninterestIncome	2736000	usd
CY2022Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	5417000	usd
CY2021Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4856000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	16156000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	14863000	usd
CY2022Q3	us-gaap	Occupancy Net OccupancyNet	1188000	usd
CY2021Q3	us-gaap	Occupancy Net OccupancyNet	1116000	usd
	us-gaap	Occupancy Net OccupancyNet	3621000	usd
	us-gaap	Occupancy Net OccupancyNet	3403000	usd
CY2022Q3	us-gaap	Professional Fees ProfessionalFees	549000	usd
CY2021Q3	us-gaap	Professional Fees ProfessionalFees	502000	usd
	us-gaap	Professional Fees ProfessionalFees	1732000	usd
	us-gaap	Professional Fees ProfessionalFees	1423000	usd
CY2022Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	675000	usd
CY2021Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	626000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2044000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2003000	usd
CY2022Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	105000	usd
CY2021Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	121000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	295000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	356000	usd
CY2022Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	112000	usd
CY2021Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	106000	usd
	us-gaap	General Insurance Expense GeneralInsuranceExpense	354000	usd
	us-gaap	General Insurance Expense GeneralInsuranceExpense	341000	usd
CY2022Q3	us-gaap	Marketing Expense MarketingExpense	92000	usd
CY2021Q3	us-gaap	Marketing Expense MarketingExpense	64000	usd
	us-gaap	Marketing Expense MarketingExpense	226000	usd
	us-gaap	Marketing Expense MarketingExpense	116000	usd
CY2022Q3	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	876000	usd
CY2021Q3	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	942000	usd
	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	2497000	usd
	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	2146000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	9014000	usd
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	8333000	usd
	us-gaap	Noninterest Expense NoninterestExpense	26925000	usd
	us-gaap	Noninterest Expense NoninterestExpense	24651000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	4881000	usd
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	3957000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	12412000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	11788000	usd
CY2022Q3	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	935000	usd
CY2021Q3	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	758000	usd
	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	2398000	usd
	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	2281000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	3946000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	3199000	usd
	us-gaap	Net Income Loss NetIncomeLoss	10014000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9507000	usd
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.11
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.43
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.99
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8981037	shares
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9314456	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8983806	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9412196	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9068541	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9446702	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9088206	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9514165	shares
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	3946000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	3199000	usd
	us-gaap	Net Income Loss NetIncomeLoss	10014000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9507000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-6486000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-761000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-19187000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1192000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1362000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-160000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-4029000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-251000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	3182000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	553000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	9569000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	3337000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	668000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	116000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	2009000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	701000	usd
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	315000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2610000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-164000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7598000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1695000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1336000	usd
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3035000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2416000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	11202000	usd
CY2021Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9651180	shares
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	161621000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	3199000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-164000	usd
CY2021Q3	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2000	shares
CY2021Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	22000	usd
CY2021Q3	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	10080	shares
CY2021Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2021Q3	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	28213	shares
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Employee Stock Purchase Program Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition	453000	usd
CY2021Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	180179	shares
CY2021Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2969000	usd
CY2021Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2021Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1021000	usd
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9483081	shares
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	161456000	usd
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9736875	shares
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	156302000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9507000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1695000	usd
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	6000	shares
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	64000	usd
	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	55673	shares
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-38000	usd
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	54481	shares
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	454000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	558000	usd
	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	84639	shares
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Employee Stock Purchase Program Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition	1227000	usd
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	312628	shares
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	4751000	usd
	ffnw	Stock Canceled During Period Shares Restricted Stock Award Gross StockCanceledDuringPeriodSharesRestrictedStockAwardGross	2839	shares
	ffnw	Stock Canceled During Period Value Restricted Stock Award Gross StockCanceledDuringPeriodValueRestrictedStockAwardGross	0	usd
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.33
	us-gaap	Dividends Common Stock DividendsCommonStock	3108000	usd
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9483081	shares
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	161456000	usd
CY2022Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9091533	shares
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	156896000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	3946000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2610000	usd
CY2022Q3	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	50000	shares
	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	45544	shares
CY2022Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	407000	usd
CY2022Q3	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	13332	shares
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	327000	usd
CY2022Q3	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	28214	shares
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Employee Stock Purchase Program Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition	430000	usd
CY2022Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	27270	shares
CY2022Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	422000	usd
CY2022Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.12
CY2022Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1084000	usd
CY2022Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9127595	shares
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	157890000	usd
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9125759	shares
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	157879000	usd
	us-gaap	Net Income Loss NetIncomeLoss	10014000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7598000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	641000	usd
	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	84640	shares
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Employee Stock Purchase Program Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition	1372000	usd
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	84981	shares
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1398000	usd
	ffnw	Stock Canceled During Period Shares Restricted Stock Award Gross StockCanceledDuringPeriodSharesRestrictedStockAwardGross	13208	shares
	ffnw	Stock Canceled During Period Value Restricted Stock Award Gross StockCanceledDuringPeriodValueRestrictedStockAwardGross	226000	usd
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
	us-gaap	Dividends Common Stock DividendsCommonStock	3248000	usd
CY2022Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9127595	shares
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	157890000	usd
	us-gaap	Net Income Loss NetIncomeLoss	10014000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9507000	usd
	ffnw	Recaptureof Provisionfor Loanand Lease Losses RecaptureofProvisionforLoanandLeaseLosses	900000	usd
	ffnw	Recaptureof Provisionfor Loanand Lease Losses RecaptureofProvisionforLoanandLeaseLosses	300000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-207000	usd
	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-593000	usd
	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-807000	usd
	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1642000	usd
	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1607000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1000	usd
	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	515000	usd
	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	445000	usd
	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	1372000	usd
	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	1227000	usd
	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	641000	usd
	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	558000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	782000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	891000	usd
	ffnw	Change In Annuity Value ChangeInAnnuityValue	6000	usd
	ffnw	Change In Annuity Value ChangeInAnnuityValue	20000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-55830000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	306000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	715000	usd
	ffnw	Increase Decrease In Rightof Use Asset IncreaseDecreaseInRightofUseAsset	-542000	usd
	ffnw	Increase Decrease In Rightof Use Asset IncreaseDecreaseInRightofUseAsset	-567000	usd
	ffnw	Increase Decreasein Advance Paymentsfor Taxesand Insurance IncreaseDecreaseinAdvancePaymentsforTaxesandInsurance	2124000	usd
	ffnw	Increase Decreasein Advance Paymentsfor Taxesand Insurance IncreaseDecreaseinAdvancePaymentsforTaxesandInsurance	2577000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	976000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	173000	usd
	ffnw	Increase Decrease In Lease Liability IncreaseDecreaseInLeaseLiability	-520000	usd
	ffnw	Increase Decrease In Lease Liability IncreaseDecreaseInLeaseLiability	-547000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	73000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-5000	usd
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	9176000	usd
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-669000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	23202000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	14183000	usd
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-8038000	usd
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	247000	usd
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	3781000	usd
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	10000000	usd
	ffnw	Principal Repaymentson Investments Availablefor Sale PrincipalRepaymentsonInvestmentsAvailableforSale	13796000	usd
	ffnw	Principal Repaymentson Investments Availablefor Sale PrincipalRepaymentsonInvestmentsAvailableforSale	13621000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	89687000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	76130000	usd
	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	38987000	usd
	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	787000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	2247000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	55000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	810000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1657000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1086000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	72000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2155000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-114226000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	105000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	48103000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	0	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	50000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	454000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	64000	usd
	ffnw	Net Settlementof Stock Awards NetSettlementofStockAwards	226000	usd
	ffnw	Net Settlementof Stock Awards NetSettlementofStockAwards	38000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1398000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4751000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	3248000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	3108000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	42544000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	40270000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-48480000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1377000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	73391000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80489000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	24911000	usd
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	79112000	usd
	us-gaap	Interest Paid Net InterestPaidNet	5915000	usd
	us-gaap	Interest Paid Net InterestPaidNet	7094000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	2000000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	2445000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-19187000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-1192000	usd
	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	9569000	usd
	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	3337000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	156000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	758000	usd
	ffnw	Initial Recognitionof Lease Liability InitialRecognitionofLeaseLiability	156000	usd
	ffnw	Initial Recognitionof Lease Liability InitialRecognitionofLeaseLiability	758000	usd
	us-gaap	Nature Of Operations NatureOfOperations	Description of Business<div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">First Financial Northwest, Inc. (“First Financial Northwest”), a Washington corporation, was formed on June 1, 2007 for the purpose of becoming the holding company for First Financial Northwest Bank (the “Bank”) in connection with the conversion from a mutual holding company structure to a stock holding company structure completed on October 9, 2007. First Financial Northwest’s business activities generally are limited to passive investment activities and oversight of its investment in First Financial Northwest Bank. Accordingly, the information presented in the consolidated financial statements and accompanying data, relates primarily to First Financial Northwest Bank. First Financial Northwest is a bank holding company, having converted from a savings and loan holding company on March 31, 2015, and as a bank holding company is subject to regulation by the Federal Reserve Bank of San Francisco. First Financial Northwest Bank is regulated by the Federal Deposit Insurance Corporation (“FDIC”) and the Washington State Department of Financial Institutions (“DFI”).</span></div><div style="text-align:justify;text-indent:36pt"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">At September 30, 2022, First Financial Northwest Bank operated in fifteen locations in Washington with the headquarters and seven retail branch locations in King County, five retail branch locations in Snohomish County and two retail branches in Pierce County. The Bank’s primary market area consists of King, Snohomish, Pierce and Kitsap counties, Washington. </span></div><div style="text-align:justify;text-indent:36pt"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Bank is a portfolio lender, originating and purchasing one-to-four family residential, multifamily, commercial real estate, construction/land development, business, and consumer loans. Loans are primarily funded by deposits from the general public, supplemented by borrowings from the FHLB and deposits raised in the national brokered deposit market.</span></div><div style="text-align:justify;text-indent:36pt"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">As used throughout this report, the terms “we,” “our,” “us,” or the “Company” refer to First Financial Northwest, Inc. and its consolidated subsidiary First Financial Northwest Bank, unless the context otherwise requires.</span></div>
CY2022Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	240268000	usd
CY2022Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	10000	usd
CY2022Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	19000000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	221278000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	168751000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1656000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1459000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	168948000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	152414000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	10344000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	64503000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	8656000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	216917000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	19000000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	64255000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	841000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	29764000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	618000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	94019000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1459000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	131	securities
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	51	securities
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	38	securities
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	14	securities
	ffnw	Troubled Debt Restructuring Charge To Allowance For Loan And Lease Losses TroubledDebtRestructuringChargeToAllowanceForLoanAndLeaseLosses	0	usd
	ffnw	Troubled Debt Restructuring Charge To Allowance For Loan And Lease Losses TroubledDebtRestructuringChargeToAllowanceForLoanAndLeaseLosses	0	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	5998000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	5927000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	44023000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	42702000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	28857000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	26173000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	69585000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	61800000	usd
CY2022Q3	ffnw	Debt Securities Excluding Accrued Interest Amortized Cost Total DebtSecuritiesExcludingAccruedInterestAmortizedCostTotal	148463000	usd
CY2022Q3	ffnw	Debt Securities Excluding Accrued Interest Fair Value Excluding Mortgage Backed Securities DebtSecuritiesExcludingAccruedInterestFairValueExcludingMortgageBackedSecurities	136602000	usd
CY2022Q3	ffnw	Mortgage Backed Investments Amortized Cost MortgageBackedInvestmentsAmortizedCost	91805000	usd
CY2022Q3	us-gaap	Mortgage Backed Securities Available For Sale Fair Value Disclosure MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure	84676000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	240268000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	221278000	usd
CY2022Q3	ffnw	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged As Percent Of Public Deposits Held FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledgedAsPercentOfPublicDepositsHeld	0.50
CY2022Q3	ffnw	Investments Pledged As Collateral For Public Deposits InvestmentsPledgedAsCollateralForPublicDeposits	21300000	usd
CY2021Q4	ffnw	Investments Pledged As Collateral For Public Deposits InvestmentsPledgedAsCollateralForPublicDeposits	23100000	usd
CY2022Q3	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	399000	usd
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	3800000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2022Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2021Q3	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	0	usd
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	10000000	usd
CY2021Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2020Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	2400000	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	2400000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Current FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCurrent	1157973000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Current FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCurrent	1119536000	usd
CY2022Q3	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	101000	usd
CY2021Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	-418000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest Current FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestCurrent	14726000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest Current FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestCurrent	15657000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss Current FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossCurrent	1143348000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss Current FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossCurrent	1103461000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	1157973000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	1119536000	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Ratio Of Nonperforming Loans To All Loans LoansAndLeasesReceivableRatioOfNonperformingLoansToAllLoans	0.0004
CY2021Q4	us-gaap	Loans And Leases Receivable Ratio Of Nonperforming Loans To All Loans LoansAndLeasesReceivableRatioOfNonperformingLoansToAllLoans	0.0002
CY2022Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2022Q3	ffnw	Troubled Debt Restructuring Charge To Allowance For Loan And Lease Losses TroubledDebtRestructuringChargeToAllowanceForLoanAndLeaseLosses	0	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0	usd
CY2021Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	45498000	usd
CY2022Q3	ffnw	Impaired Financing Receivable With No Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeRecognized	544000	usd
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	42259000	usd
	ffnw	Impaired Financing Receivable With No Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeRecognized	1566000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	1004000	usd
CY2022Q3	ffnw	Impaired Financing Receivable With Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeRecognized	16000	usd
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	1008000	usd
	ffnw	Impaired Financing Receivable With Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeRecognized	48000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	46502000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	560000	usd
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	43267000	usd
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1614000	usd
CY2021Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	27463000	usd
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0	loan
CY2021Q3	ffnw	Impaired Financing Receivable With No Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeRecognized	211000	usd
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	23702000	usd
	ffnw	Impaired Financing Receivable With No Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeRecognized	718000	usd
CY2021Q3	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	1309000	usd
CY2021Q3	ffnw	Impaired Financing Receivable With Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeRecognized	20000	usd
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	1314000	usd
	ffnw	Impaired Financing Receivable With Related Allowance Interest Income Recognized ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeRecognized	63000	usd
CY2021Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	28772000	usd
CY2021Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	231000	usd
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	25016000	usd
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	781000	usd
CY2022Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	1800000	usd
CY2021Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	2100000	usd
CY2022Q3	ffnw	Troubled Debt Restructuring Commitment To Extend Additional Credit TroubledDebtRestructuringCommitmentToExtendAdditionalCredit	0	usd
CY2021Q3	ffnw	Troubled Debt Restructuring Charge To Allowance For Loan And Lease Losses TroubledDebtRestructuringChargeToAllowanceForLoanAndLeaseLosses	0	usd
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4	loan
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2596000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2596000	usd
CY2022Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
CY2021Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
CY2022Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	221278000	usd
CY2022Q3	us-gaap	Derivative Assets DerivativeAssets	11059000	usd
CY2022Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	232337000	usd
CY2021Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	168948000	usd
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	1491000	usd
CY2021Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	170439000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	49304000	usd
CY2022Q3	ffnw	Impaired Loans Receivable And Other Real Estate Owned Fair Value Measurement ImpairedLoansReceivableAndOtherRealEstateOwnedFairValueMeasurement	49304000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	15000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	36118000	usd
CY2021Q4	ffnw	Impaired Loans Receivable And Other Real Estate Owned Fair Value Measurement ImpairedLoansReceivableAndOtherRealEstateOwnedFairValueMeasurement	36118000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	20000	usd
CY2022Q3	us-gaap	Property Subject To Or Available For Operating Lease Number Of Units PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits	13	lease
CY2022Q3	ffnw	Lessee Operating Lease Liability Monthly Payment Due LesseeOperatingLeaseLiabilityMonthlyPaymentDue	71000	usd
CY2022Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	270000	usd
CY2021Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	276000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	835000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	794000	usd
CY2022Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3260000	usd
CY2021Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-59000	usd
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3838000	usd
CY2022Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3441000	usd
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3994000	usd
CY2022Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y9M18D
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y4M24D
CY2022Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0198
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0191
CY2022Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	814000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	709000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	622000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	405000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	296000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	804000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	3650000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	209000	usd
CY2022Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	3441000	usd
CY2022Q3	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0	usd
CY2021Q3	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	2514000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	437000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	7560000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	2636000	usd
CY2022Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	327000	usd
CY2022Q3	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	69000	usd
CY2021Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	315000	usd
CY2021Q3	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	66000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	641000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	558000	usd
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	135000	usd
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	117000	usd
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	267519	shares
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	10.63
CY2022Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1290762	usd
CY2022Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	3.83
CY2022Q3	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	50000	shares
CY2022Q3	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.14
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	360470	usd
CY2022Q3	ffnw	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedWeightedAverageGrantDateFairValue	2.63
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	217519	shares
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	11.20
CY2022Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y8M8D
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	792575	usd
CY2022Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	4.10
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	217519	shares
CY2022Q3	ffnw	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverage	11.20
CY2022Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y8M8D
CY2022Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	792575	usd
CY2022Q3	ffnw	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue	4.10
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	272000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	10.63
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1507300	usd
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	3.82
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	54481	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.36
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	386658	usd
	ffnw	Share Based Compensation Arrangement By Share Based Payment Award Options Exercised Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedWeightedAverageGrantDateFairValue	2.70
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	217519	shares
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	11.20
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y8M8D
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	792575	usd
CY2022Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	4.10
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	217519	shares
CY2022Q3	ffnw	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverage	11.20
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y8M8D
CY2022Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	792575	usd
CY2022Q3	ffnw	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue	4.10
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-164000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-164000	usd
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-223000	usd
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1918000	usd
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	1695000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1695000	usd
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-223000	usd
CY2022Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-4814000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-2610000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2610000	usd
CY2022Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7424000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	174000	usd
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-7598000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7598000	usd
CY2022Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7424000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	3946000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	3199000	usd
	us-gaap	Net Income Loss NetIncomeLoss	10014000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9507000	usd
CY2022Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-13000	usd
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-15000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-33000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-43000	usd
CY2022Q3	ffnw	Undistributed Earnings Allocatedto Common Shareholders UndistributedEarningsAllocatedtoCommonShareholders	3933000	usd
CY2021Q3	ffnw	Undistributed Earnings Allocatedto Common Shareholders UndistributedEarningsAllocatedtoCommonShareholders	3184000	usd
	ffnw	Undistributed Earnings Allocatedto Common Shareholders UndistributedEarningsAllocatedtoCommonShareholders	9981000	usd
	ffnw	Undistributed Earnings Allocatedto Common Shareholders UndistributedEarningsAllocatedtoCommonShareholders	9464000	usd
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8981037	shares
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9314456	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8983806	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9412196	shares
CY2022Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	75195	shares
CY2021Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	109453	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	90608	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	89108	shares
CY2022Q3	ffnw	Dilutive Stock Awards DilutiveStockAwards	12309	shares
CY2021Q3	ffnw	Dilutive Stock Awards DilutiveStockAwards	22793	shares
	ffnw	Dilutive Stock Awards DilutiveStockAwards	13792	shares
	ffnw	Dilutive Stock Awards DilutiveStockAwards	12861	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9068541	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9446702	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9088206	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9514165	shares
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.11
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.43
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.99
CY2022Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2022Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	778000	usd
CY2021Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	999000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2528000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2736000	usd
CY2022Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	usd
CY2022Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	0	usd

Files In Submission

Name	View Source	Status
0000939057-22-000349-index-headers.html	Edgar Link	pending
0000939057-22-000349-index.html	Edgar Link	pending
0000939057-22-000349.txt	Edgar Link	pending
0000939057-22-000349-xbrl.zip	Edgar Link	pending
ffnw-20220930.htm	Edgar Link	pending
ffnw-20220930.xsd	Edgar Link	pending
ffnw-2022930x10qexx311.htm	Edgar Link	pending
ffnw-2022930x10qexx312.htm	Edgar Link	pending
ffnw-2022930x10qexx32.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R13.htm	Edgar Link	pending
ffnw-20220930_cal.xml	Edgar Link	unprocessable
ffnw-20220930_def.xml	Edgar Link	unprocessable
ffnw-20220930_lab.xml	Edgar Link	unprocessable
ffnw-20220930_pre.xml	Edgar Link	unprocessable
ffnw-20220930_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable

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$FFNW
First Financial Northwest, Inc. Stock $ffnw

2022 Q4 Form 10-Q Financial Statement

#000093905722000349 Filed on November 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FFNW First Financial Northwest, Inc. Stock $ffnw

2022 Q4 Form 10-Q Financial Statement

#000093905722000349 Filed on November 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FFNW
First Financial Northwest, Inc. Stock $ffnw