$FNWB
First Northwest Bancorp Stock $fnwb

$fnwb Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000143774923031577 Filed on November 13, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue		$25.83M
YoY Change		23.87%
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	$415.0K	$400.0K
YoY Change	-16.5%	-29.45%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$10.88M
YoY Change		310.56%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	-$6.876M	$3.107M
YoY Change	-200.09%	-29.59%
Income Tax	-$1.354M	$603.0K
% Of Pretax Income		19.41%
Net Earnings	-$5.494M	$2.504M
YoY Change	-191.4%	-41.65%
Net Earnings / Revenue		9.69%
Basic Earnings Per Share		$0.28
Diluted Earnings Per Share	-$0.61	$0.28
COMMON SHARES
Basic Shares Outstanding	9.618M	9.632M
Diluted Shares Outstanding		8.935M

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$123.2M	$83.89M
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	$18.05M	$17.95M
YoY Change	-0.22%	-13.85%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$13.00M	$16.60M
YoY Change	-7.74%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$2.202B	$2.154B
YoY Change	7.82%	2.97%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.396M	$2.300M
YoY Change	646.37%	2090.48%
Accrued Expenses	$35.97M	$34.70M
YoY Change	11.22%	-0.69%
Deferred Revenue
YoY Change
Short-Term Debt	$6.500M	$8.000M
YoY Change	-45.83%	-33.33%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$39.37M	$45.00M
YoY Change	20.03%	28.41%
LONG-TERM LIABILITIES
Long-Term Debt	$320.9M	$39.40M
YoY Change
Other Long-Term Liabilities	$1.260M	$2.400M
YoY Change	-8.43%	7.91%
Total Long-Term Liabilities	$322.2M	$41.80M
YoY Change	23315.41%	1779.5%
TOTAL LIABILITIES
Total Short-Term Liabilities	$39.37M	$45.00M
Total Long-Term Liabilities	$322.2M	$41.80M
Total Liabilities	$2.038B	$1.997B
YoY Change	8.21%	3.24%
SHAREHOLDERS EQUITY
Retained Earnings	$107.3M	$113.6M
YoY Change	-6.18%	3.15%
Common Stock	$96.00K	$96.00K
YoY Change	-1.03%	-4.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$163.3M	$156.1M
YoY Change
Total Liabilities & Shareholders Equity	$2.202B	$2.154B
YoY Change	7.82%	2.97%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	-$5.494M	$2.504M
YoY Change	-191.4%	-41.65%
Depreciation, Depletion And Amortization	$415.0K	$400.0K
YoY Change	-16.5%	-29.45%
Cash From Operating Activities	$2.585M	-$2.500M
YoY Change	18.14%	-156.08%
INVESTING ACTIVITIES
Capital Expenditures	$501.0K	$220.0K
YoY Change	39.94%	-292.98%
Acquisitions
YoY Change
Other Investing Activities	-$393.0K	$5.810M
YoY Change	-94.36%	-110.52%
Cash From Investing Activities	-$894.0K	$5.590M
YoY Change	-87.81%	-110.1%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	37.59M	2.140M
YoY Change	-171.03%	-96.79%
NET CHANGE
Cash From Operating Activities	2.585M	-2.500M
Cash From Investing Activities	-894.0K	5.590M
Cash From Financing Activities	37.59M	2.140M
Net Change In Cash	39.28M	5.230M
YoY Change	-167.65%	-67.04%
FREE CASH FLOW
Cash From Operating Activities	$2.585M	-$2.500M
Capital Expenditures	$501.0K	$220.0K
Free Cash Flow	$2.084M	-$2.720M
YoY Change	13.88%	-159.49%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
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CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16116000	usd
CY2023Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2023Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2023Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	75000000
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	9630735
CY2023Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9630735
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	9703581
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9703581
CY2022Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.07
CY2023Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.07
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.21
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.21
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2023Q1	fnwb	Employee Stock Ownership Plan Esop Minimum Service Period Hours EmployeeStockOwnershipPlanEsopMinimumServicePeriodHours	1000	pure
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2023-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-36741
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	46-1259100
	dei	Entity Address Address Line1 EntityAddressAddressLine1	105 West 8th Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	Port Angeles
	dei	Entity Address State Or Province EntityAddressStateOrProvince	WA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	98362
	dei	City Area Code CityAreaCode	360
	dei	Local Phone Number LocalPhoneNumber	457-0461
	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
	dei	Trading Symbol TradingSymbol	FNWB
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Shell Company EntityShellCompany	false
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CY2023Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	16611000	usd
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CY2023Q3	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	300416000	usd
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CY2023Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	2276000	usd
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	455000	usd
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CY2022Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	32344000	usd
CY2023Q3	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	2375000	usd
CY2022Q4	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	1376000	usd
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CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-45850000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-40543000	usd
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	fnwb	Dividend Income Operating Federal Home Loan Bank DividendIncomeOperatingFederalHomeLoanBank	628000	usd
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CY2023Q3	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	252000	usd
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	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	686000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1315000	usd
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	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2203000	usd
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	us-gaap	Noninterest Income NoninterestIncome	6959000	usd
CY2023Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7795000	usd
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	us-gaap	Labor And Related Expense LaborAndRelatedExpense	23812000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	27583000	usd
CY2023Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1945000	usd
CY2022Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1778000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6063000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	5420000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	1173000	usd
CY2022Q3	us-gaap	Occupancy Net OccupancyNet	1499000	usd
	us-gaap	Occupancy Net OccupancyNet	3596000	usd
	us-gaap	Occupancy Net OccupancyNet	4098000	usd
CY2023Q3	fnwb	Supplies Postage And Telephone Expense SuppliesPostageAndTelephoneExpense	292000	usd
CY2022Q3	fnwb	Supplies Postage And Telephone Expense SuppliesPostageAndTelephoneExpense	322000	usd
	fnwb	Supplies Postage And Telephone Expense SuppliesPostageAndTelephoneExpense	1082000	usd
	fnwb	Supplies Postage And Telephone Expense SuppliesPostageAndTelephoneExpense	1043000	usd
CY2023Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	446000	usd
CY2022Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	365000	usd
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1259000	usd
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1167000	usd
CY2023Q3	us-gaap	Advertising Expense AdvertisingExpense	501000	usd
CY2022Q3	us-gaap	Advertising Expense AdvertisingExpense	645000	usd
	us-gaap	Advertising Expense AdvertisingExpense	2471000	usd
	us-gaap	Advertising Expense AdvertisingExpense	2802000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	929000	usd
CY2022Q3	us-gaap	Professional Fees ProfessionalFees	695000	usd
	us-gaap	Professional Fees ProfessionalFees	2619000	usd
	us-gaap	Professional Fees ProfessionalFees	1883000	usd
CY2023Q3	fnwb	Federal Deposit Insurance Corporation Premium Return FederalDepositInsuranceCorporationPremiumReturn	369000	usd
CY2022Q3	fnwb	Federal Deposit Insurance Corporation Premium Return FederalDepositInsuranceCorporationPremiumReturn	219000	usd
	fnwb	Federal Deposit Insurance Corporation Premium Return FederalDepositInsuranceCorporationPremiumReturn	939000	usd
	fnwb	Federal Deposit Insurance Corporation Premium Return FederalDepositInsuranceCorporationPremiumReturn	653000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	926000	usd
CY2022Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	807000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2623000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2520000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	14376000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	15375000	usd
	us-gaap	Noninterest Expense NoninterestExpense	44464000	usd
	us-gaap	Noninterest Expense NoninterestExpense	47169000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3107000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4413000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9551000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9473000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	603000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	818000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1903000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1839000	usd
CY2023Q3	us-gaap	Profit Loss ProfitLoss	2504000	usd
CY2022Q3	us-gaap	Profit Loss ProfitLoss	3595000	usd
	us-gaap	Profit Loss ProfitLoss	7648000	usd
	us-gaap	Profit Loss ProfitLoss	7634000	usd
CY2023Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-0	usd
CY2022Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-696000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-160000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1951000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	2504000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	4291000	usd
	us-gaap	Net Income Loss NetIncomeLoss	7808000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9585000	usd
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2023Q3	us-gaap	Profit Loss ProfitLoss	2504000	usd
CY2022Q3	us-gaap	Profit Loss ProfitLoss	3595000	usd
	us-gaap	Profit Loss ProfitLoss	7648000	usd
	us-gaap	Profit Loss ProfitLoss	7634000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-8327000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-15954000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-7688000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-52283000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1787000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-3350000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1873000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-10979000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-37000	usd
CY2022Q3	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-37000	usd
	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-113000	usd
	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-110000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-8000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-9000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-24000	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-24000	usd
CY2023Q3	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationBeforeTax	925000	usd
CY2022Q3	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationBeforeTax	0	usd
	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationBeforeTax	533000	usd
	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationBeforeTax	0	usd
CY2023Q3	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationTax	198000	usd
CY2022Q3	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationTax	-0	usd
	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationTax	114000	usd
	fnwb	Other Comprehensive Income Loss Fair Value Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossFairValueHedgeGainLossAfterReclassificationTax	-0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	118000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	25000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5784000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12576000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5307000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-41311000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-3280000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-8981000	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2341000	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-33677000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-696000	usd
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-160000	usd
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1951000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-3280000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-8285000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2501000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-31726000	usd
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	165154000	usd
CY2022Q3	us-gaap	Profit Loss ProfitLoss	3595000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1869000	usd
CY2022Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1281000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	89000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12576000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	404000	usd
CY2022Q3	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	216000	usd
CY2022Q3	us-gaap	Dividends Cash DividendsCash	693000	usd
CY2022Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	156599000	usd
CY2023Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	159557000	usd
CY2023Q3	us-gaap	Profit Loss ProfitLoss	2504000	usd
CY2023Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	12000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	43000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5784000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	349000	usd
CY2023Q3	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	167000	usd
CY2023Q3	us-gaap	Dividends Cash DividendsCash	673000	usd
CY2023Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	156065000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	190480000	usd
	us-gaap	Profit Loss ProfitLoss	7634000	usd
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1869000	usd
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2140000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	311000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-41311000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1294000	usd
	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	752000	usd
	us-gaap	Dividends Cash DividendsCash	2092000	usd
CY2022Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	156599000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	158282000	usd
	us-gaap	Profit Loss ProfitLoss	7648000	usd
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	980000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	205000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5307000	usd
	fnwb	Close Out Of Investment CloseOutOfInvestment	-0	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1098000	usd
	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	507000	usd
	us-gaap	Dividends Cash DividendsCash	2027000	usd
CY2023Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	156065000	usd
	us-gaap	Profit Loss ProfitLoss	7648000	usd
	us-gaap	Profit Loss ProfitLoss	7634000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1201000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1547000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1078000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1280000	usd
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	451000	usd
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	-619000	usd
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	58000	usd
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	58000	usd
	fnwb	Fair Value Adjustment Of Sold Loan Servicing Rights FairValueAdjustmentOfSoldLoanServicingRights	303000	usd
	fnwb	Fair Value Adjustment Of Sold Loan Servicing Rights FairValueAdjustmentOfSoldLoanServicingRights	91000	usd
	fnwb	Servicing Asset At Fair Value Additions Net ServicingAssetAtFairValueAdditionsNet	-145000	usd
	fnwb	Servicing Asset At Fair Value Additions Net ServicingAssetAtFairValueAdditionsNet	-143000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1195000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1250000	usd
	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	507000	usd
	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	546000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	1098000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	1294000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	405000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	769000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	118000	usd
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	668000	usd
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	686000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	21351000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	22272000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	21664000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	23538000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1350000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1366000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2151000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4191000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	1821000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-288000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	1960000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	5680000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	15292000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13714000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	-0	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	78409000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	8480000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	26937000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	12685000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	940000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	6765000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	15000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	89551000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	172727000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1066000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2556000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	335000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	7628000	usd
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	99000	usd
	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	0	usd
	fnwb	Payments To Acquire Lowincome Housing Tax Credit Partnerships PaymentsToAcquireLowincomeHousingTaxCreditPartnerships	0	usd
	fnwb	Payments To Acquire Lowincome Housing Tax Credit Partnerships PaymentsToAcquireLowincomeHousingTaxCreditPartnerships	-23000	usd
	us-gaap	Payments To Acquire Partners Interest In Real Estate Partnership Net Of Cash Acquired PaymentsToAcquirePartnersInterestInRealEstatePartnershipNetOfCashAcquired	-0	usd
	us-gaap	Payments To Acquire Partners Interest In Real Estate Partnership Net Of Cash Acquired PaymentsToAcquirePartnersInterestInRealEstatePartnershipNetOfCashAcquired	1829000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-83298000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-230315000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	93507000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	24655000	usd
	fnwb	Proceeds From Fhl Bank Advance Financing Activities ProceedsFromFHLBankAdvanceFinancingActivities	15000000	usd
	fnwb	Proceeds From Fhl Bank Advance Financing Activities ProceedsFromFHLBankAdvanceFinancingActivities	0	usd
	fnwb	Payments Of Fhlbank Borrowings Financing Activities Longterm PaymentsOfFhlbankBorrowingsFinancingActivitiesLongterm	15000000	usd
	fnwb	Payments Of Fhlbank Borrowings Financing Activities Longterm PaymentsOfFhlbankBorrowingsFinancingActivitiesLongterm	-0	usd
	fnwb	Payments Of Fhlbank Borrowings Financing Activities Shortterm PaymentsOfFhlbankBorrowingsFinancingActivitiesShortterm	-19000000	usd
	fnwb	Payments Of Fhlbank Borrowings Financing Activities Shortterm PaymentsOfFhlbankBorrowingsFinancingActivitiesShortterm	-161000000	usd
	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-4000000	usd
	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	12000000	usd
	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	999000	usd
	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	1116000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	2025000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	2072000	usd
	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	205000	usd
	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	311000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	980000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2140000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	106296000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	194248000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	38290000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-22353000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	45596000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	126016000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	83886000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	103663000	usd
	us-gaap	Interest Paid Net InterestPaidNet	25532000	usd
	us-gaap	Interest Paid Net InterestPaidNet	6072000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1859000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2954000	usd
	us-gaap	Debt Securities Available For Sale Unrealized Gain Loss DebtSecuritiesAvailableForSaleUnrealizedGainLoss	-7688000	usd
	us-gaap	Debt Securities Available For Sale Unrealized Gain Loss DebtSecuritiesAvailableForSaleUnrealizedGainLoss	-52401000	usd
	fnwb	Unrealized Gain Loss On Fair Value Hedging Instruments UnrealizedGainLossOnFairValueHedgingInstruments	533000	usd
	fnwb	Unrealized Gain Loss On Fair Value Hedging Instruments UnrealizedGainLossOnFairValueHedgingInstruments	0	usd
	fnwb	Cumulative Adjustment To Servicing Right Asset Due To Election Of Fair Value Option CumulativeAdjustmentToServicingRightAssetDueToElectionOfFairValueOption	0	usd
	fnwb	Cumulative Adjustment To Servicing Right Asset Due To Election Of Fair Value Option CumulativeAdjustmentToServicingRightAssetDueToElectionOfFairValueOption	538000	usd
	fnwb	Cumulative Effect Of Adoption Of New Accounting Standard CumulativeEffectOfAdoptionOfNewAccountingStandard	-3735000	usd
	fnwb	Cumulative Effect Of Adoption Of New Accounting Standard CumulativeEffectOfAdoptionOfNewAccountingStandard	0	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	152000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
	fnwb	Stock Issued To Acquire Investment In Partnership StockIssuedToAcquireInvestmentInPartnership	0	usd
	fnwb	Stock Issued To Acquire Investment In Partnership StockIssuedToAcquireInvestmentInPartnership	1869000	usd
CY2015Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	13100360
CY2015Q1	fnwb	Proceeds From Issuance Of Common Stock Net ProceedsFromIssuanceOfCommonStockNet	117600000	usd
CY2015Q1	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	58400000	usd
CY2015Q4	fnwb	Employee Stock Ownership Plan Esop EmployeeStockOwnershipPlanESOP	0.08	pure
CY2015Q4	us-gaap	Stock Issued During Period Shares Employee Stock Ownership Plan StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan	1048029
CY2023Q1	srt	Financing Receivable Allowance For Credit Loss To Outstanding Percent FinancingReceivableAllowanceForCreditLossToOutstandingPercent	0.0118	pure
CY2022Q4	srt	Financing Receivable Allowance For Credit Loss To Outstanding Percent FinancingReceivableAllowanceForCreditLossToOutstandingPercent	0.0104	pure
CY2023Q3	srt	Financing Receivable Allowance For Credit Loss To Outstanding Percent FinancingReceivableAllowanceForCreditLossToOutstandingPercent	0.0104	pure
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2700000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	93000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	365626000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	56302000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	309324000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	375183000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	48615000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	326569000	usd
CY2023Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	2200000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	2000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	50000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1632000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	56252000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	307392000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	56302000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	309024000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	27459000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	204141000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	21156000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	119642000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	48615000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	323783000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	2	pure
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	180	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	113	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	69	pure
CY2023Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	365626000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	309324000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	375183000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	326569000	usd
CY2023Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	12685000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	128000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	-10000	usd
CY2023Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	14400000	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	13200000	usd
CY2023Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	5800000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	4700000	usd
CY2023Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1634978000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1547551000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16945000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16116000	usd
CY2023Q3	us-gaap	Notes Receivable Net NotesReceivableNet	1618033000	usd
CY2022Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1531435000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	2374000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1793000	usd
CY2023Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	19000000000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	52000000000	usd
CY2022Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	1547551000	usd
CY2023Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1634978000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1547551000	usd
CY2023Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	185294000	usd
CY2023Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	458725000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	466003000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	261372000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	57797000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	130327000	usd
CY2023Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	75460000	usd
CY2023Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1634978000	usd
	us-gaap	Financing Receivable Year One Originated Current Fiscal Year Writeoff FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	2421000	usd
	us-gaap	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	15000	usd
	us-gaap	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	27000	usd
	us-gaap	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	11000	usd
	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	123000	usd
	us-gaap	Financing Receivable Revolving Writeoff FinancingReceivableRevolvingWriteoff	71000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2668000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1547551000	usd
CY2023Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	4100000	usd
CY2023Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	2700000	usd
CY2022Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1500000	usd
CY2022Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	1753000	usd
CY2022Q4	fnwb	Financing Receivable Modifications Recorded Investment Nonaccrual FinancingReceivableModificationsRecordedInvestmentNonaccrual	29000	usd
CY2022Q4	fnwb	Financing Receivable Troubled Debt Restructuring Accrual FinancingReceivableTroubledDebtRestructuringAccrual	1724000	usd
CY2022Q4	fnwb	Financing Receivable Modifications Recorded Investment Nonaccrual FinancingReceivableModificationsRecordedInvestmentNonaccrual	29000	usd
CY2022Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	1753000	usd
	fnwb	Financing Receivable Modified Number Of Contracts FinancingReceivableModifiedNumberOfContracts	0	pure
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	731000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	501000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	880000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16945000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16116000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2668000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	93000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1195000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16945000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	352000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	1400000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	2600000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	15747000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	750000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	265000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	41000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16273000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	15124000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1250000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	475000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	374000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16273000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	16116000	usd
CY2022Q4	fnwb	Financing Receivables Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	16084000	usd
CY2022Q4	fnwb	Financing Receivables Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	32000	usd
CY2022Q4	fnwb	Financing Receivable Aggregate Loans Evaluated FinancingReceivableAggregateLoansEvaluated	1534380000	usd
CY2022Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1531346000	usd
CY2022Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	3034000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	716000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	870000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	2318000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	2467000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	32000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	3034000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3337000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	32000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	1089000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	7000	usd
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	765000	usd
	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	16000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	2541000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	55000	usd
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	2543000	usd
	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	130000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	3630000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	62000	usd
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	3308000	usd
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	146000	usd
CY2022Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	42000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	126000	usd
CY2023Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	269800000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	315083000	usd
CY2023Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	182361000	usd
CY2023Q3	us-gaap	Weighted Average Rate Domestic Deposit Demand WeightedAverageRateDomesticDepositDemand	0.0052	pure
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	193558000	usd
CY2022Q4	us-gaap	Weighted Average Rate Domestic Deposit Demand WeightedAverageRateDomesticDepositDemand	0.0001	pure
CY2023Q3	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	372706000	usd
CY2023Q3	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0128	pure
CY2022Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	473009000	usd
CY2022Q4	us-gaap	Weighted Average Rate Domestic Deposit Money Market WeightedAverageRateDomesticDepositMoneyMarket	0.0058	pure
CY2023Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	253182000	usd
CY2023Q3	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0145	pure
CY2022Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	200920000	usd
CY2022Q4	us-gaap	Weighted Average Rate Domestic Deposit Savings WeightedAverageRateDomesticDepositSavings	0.0026	pure
CY2023Q3	us-gaap	Time Deposits TimeDeposits	579713000	usd
CY2023Q3	us-gaap	Weighted Average Rate Domestic Deposit Certificates Of Deposit WeightedAverageRateDomesticDepositCertificatesOfDeposit	0.0393	pure
CY2022Q4	us-gaap	Time Deposits TimeDeposits	381685000	usd
CY2022Q4	us-gaap	Weighted Average Rate Domestic Deposit Certificates Of Deposit WeightedAverageRateDomesticDepositCertificatesOfDeposit	0.0219	pure
CY2023Q3	us-gaap	Deposits Deposits	1657762000	usd
CY2023Q3	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0194	pure
CY2022Q4	us-gaap	Deposits Deposits	1564255000	usd
CY2022Q4	us-gaap	Weighted Average Rate Domestic Deposit WeightedAverageRateDomesticDeposit	0.0074	pure
CY2023Q3	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	169600000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	133900000	usd
CY2023Q3	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	165300000	usd
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	96600000	usd
CY2023Q3	us-gaap	Time Deposit Maturities Next Rolling Twelve Months TimeDepositMaturitiesNextRollingTwelveMonths	449211000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Next Rolling Twelve Months TimeDepositMaturitiesNextRollingTwelveMonths	262189000	usd
CY2023Q3	us-gaap	Time Deposit Maturities Rolling Year Two TimeDepositMaturitiesRollingYearTwo	105169000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Two TimeDepositMaturitiesRollingYearTwo	69967000	usd
CY2023Q3	us-gaap	Time Deposit Maturities Rolling Year Three TimeDepositMaturitiesRollingYearThree	9780000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Three TimeDepositMaturitiesRollingYearThree	37032000	usd
CY2023Q3	us-gaap	Time Deposit Maturities Rolling Year Four TimeDepositMaturitiesRollingYearFour	10863000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Four TimeDepositMaturitiesRollingYearFour	7409000	usd
CY2023Q3	us-gaap	Time Deposit Maturities Rolling Year Five TimeDepositMaturitiesRollingYearFive	4690000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Five TimeDepositMaturitiesRollingYearFive	5088000	usd
CY2023Q3	us-gaap	Time Deposits TimeDeposits	579713000	usd
CY2022Q4	us-gaap	Time Deposits TimeDeposits	381685000	usd
CY2023Q3	fnwb	Deposits Public Fund DepositsPublicFund	109400000	usd
CY2022Q4	fnwb	Deposits Public Fund DepositsPublicFund	93300000	usd
CY2023Q3	fnwb	Deposits Funds Held By Federally Recognized Tribes DepositsFundsHeldByFederallyRecognizedTribes	19200000	usd
CY2022Q4	fnwb	Deposits Funds Held By Federally Recognized Tribes DepositsFundsHeldByFederallyRecognizedTribes	10300000	usd
CY2023Q3	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	204000	usd
CY2022Q3	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	16000	usd
	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	599000	usd
	us-gaap	Interest Expense Demand Deposit Accounts InterestExpenseDemandDepositAccounts	58000	usd
CY2023Q3	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	1146000	usd
CY2022Q3	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	468000	usd
	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	2866000	usd
	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	1089000	usd
CY2023Q3	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	918000	usd
CY2022Q3	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	24000	usd
	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	2056000	usd
	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	76000	usd
CY2023Q3	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	5431000	usd
CY2022Q3	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	743000	usd
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	12740000	usd
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	1541000	usd
CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	7699000	usd
CY2022Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1251000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	18261000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2764000	usd
CY2023Q3	fnwb	Federal Home Loan Bank Advances Maximum Available Credit To Bank Assets Percentage FederalHomeLoanBankAdvancesMaximumAvailableCreditToBankAssetsPercentage	0.45	pure
CY2023Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	885700000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	753700000	usd
CY2023Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	60000000	usd
CY2023Q3	us-gaap	Line Of Credit Facility Fair Value Of Amount Outstanding LineOfCreditFacilityFairValueOfAmountOutstanding	8000000	usd
	us-gaap	Line Of Credit Facility Maximum Monthend Outstanding Amount LineOfCreditFacilityMaximumMonthendOutstandingAmount	11000000	usd
	fnwb	Line Of Credit Facility Average Monthly Amount LineOfCreditFacilityAverageMonthlyAmount	10249000	usd
	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0906	pure
CY2023Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.09	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.199	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.194	pure
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	2504000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	4291000	usd
	us-gaap	Net Income Loss NetIncomeLoss	7808000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9585000	usd
CY2023Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	11000	usd
CY2022Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	35000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	39000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	92000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2493000	usd
CY2022Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4256000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	7769000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	9493000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	9631929
CY2022Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	9955322
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	9666900
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	9979152
CY2023Q3	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	125338
CY2022Q3	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	212930
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	143326
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	231253
CY2023Q3	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	600065
CY2022Q3	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	648571
	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	613183
	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	661670
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8906526
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9093821
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8910391
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9086229
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8906526
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9093821
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8910391
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9086229
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	28356
CY2022Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	44302
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	20013
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	69584
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8934882
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9138123
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8930404
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9155813
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	13582
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2617
CY2023Q1	fnwb	Employee Stock Ownership Plan Esop Requisite Service Period EmployeeStockOwnershipPlanEsopRequisiteServicePeriod	P12M
CY2023Q1	fnwb	Employee Stock Ownership Plan Esop Debt Structure Amortization Period EmployeeStockOwnershipPlanEsopDebtStructureAmortizationPeriod	P20Y
CY2023Q1	fnwb	Employee Stock Ownership Plan Esop Debt Structure Estimated Interest Rate EmployeeStockOwnershipPlanEsopDebtStructureEstimatedInterestRate	0.0246	pure
	fnwb	Employee Stock Ownership Plan Esop Principal And Interest Payments From Esop EmployeeStockOwnershipPlanEsopPrincipalAndInterestPaymentsFromEsop	835000	usd
CY2023Q3	fnwb	Employee Stock Ownership Plan Esop Compensation Expense Net Of Dividends Received EmployeeStockOwnershipPlanEsopCompensationExpenseNetOfDividendsReceived	167000	usd
CY2022Q3	fnwb	Employee Stock Ownership Plan Esop Compensation Expense Net Of Dividends Received EmployeeStockOwnershipPlanEsopCompensationExpenseNetOfDividendsReceived	216000	usd
	fnwb	Employee Stock Ownership Plan Esop Compensation Expense Net Of Dividends Received EmployeeStockOwnershipPlanEsopCompensationExpenseNetOfDividendsReceived	507000	usd
	fnwb	Employee Stock Ownership Plan Esop Compensation Expense Net Of Dividends Received EmployeeStockOwnershipPlanEsopCompensationExpenseNetOfDividendsReceived	752000	usd
CY2023Q3	us-gaap	Employee Stock Ownership Plan Esop Number Of Allocated Shares EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares	439174
CY2022Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Allocated Shares EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares	386285
CY2023Q3	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	13257
CY2022Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	26442
CY2023Q3	us-gaap	Employee Stock Ownership Plan Esop Number Of Suspense Shares EmployeeStockOwnershipPlanESOPNumberOfSuspenseShares	595598
CY2022Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Suspense Shares EmployeeStockOwnershipPlanESOPNumberOfSuspenseShares	635302
CY2023Q3	us-gaap	Employee Stock Ownership Plan Esop Shares In Esop EmployeeStockOwnershipPlanESOPSharesInESOP	1048029
CY2022Q4	us-gaap	Employee Stock Ownership Plan Esop Shares In Esop EmployeeStockOwnershipPlanESOPSharesInESOP	1048029
CY2023Q3	us-gaap	Employee Stock Ownership Plan Esop Deferred Shares Fair Value EmployeeStockOwnershipPlanESOPDeferredSharesFairValue	7308000	usd
CY2022Q4	us-gaap	Employee Stock Ownership Plan Esop Deferred Shares Fair Value EmployeeStockOwnershipPlanESOPDeferredSharesFairValue	9758000	usd
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	0	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	12490000	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	0	usd
CY2022	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	73000	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	12563000	usd
CY2023Q3	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	533000	usd
CY2023Q3	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	50000000	usd
CY2023Q2	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	55800000	usd

Files In Submission

Name	View Source	Status
0001437749-23-031577-index-headers.html	Edgar Link	pending
0001437749-23-031577-index.html	Edgar Link	pending
0001437749-23-031577.txt	Edgar Link	pending
0001437749-23-031577-xbrl.zip	Edgar Link	pending
ex_566526.htm	Edgar Link	pending
ex_566527.htm	Edgar Link	pending
ex_566528.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
fnwb-20230930.xsd	Edgar Link	pending
fnwb-20230930_cal.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
fnwb-20230930_def.xml	Edgar Link	unprocessable
fnwb-20230930_lab.xml	Edgar Link	unprocessable
fnwb-20230930_pre.xml	Edgar Link	unprocessable
fnwb20230930_10q_htm.xml	Edgar Link	completed
fnwb20230930_10q.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$FNWB
First Northwest Bancorp Stock $fnwb

2023 Q4 Form 10-Q Financial Statement

#000143774923031577 Filed on November 13, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FNWB First Northwest Bancorp Stock $fnwb

2023 Q4 Form 10-Q Financial Statement

#000143774923031577 Filed on November 13, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FNWB
First Northwest Bancorp Stock $fnwb