Loans - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	$ 7,627	$ 3,656
Real estate loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	4,731	1,293
Real estate loans: | One- to four- family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	675	1,209
Real estate loans: | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	298	84
Real estate loans: | Commercial and multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	3,734
Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	24
Consumer loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	2,885	228
Consumer loans: | Manufactured homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	521	228
Consumer loans: | Floating homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	2,363
Consumer loans: | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	1
Commercial business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	11	2,135
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	3,734	0
Commercial Real Estate | Real estate loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	3,734	0
Commercial Real Estate | Real estate loans: | One- to four- family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Commercial Real Estate | Real estate loans: | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Commercial Real Estate | Real estate loans: | Commercial and multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	3,734
Commercial Real Estate | Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Commercial Real Estate | Consumer loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Commercial Real Estate | Consumer loans: | Manufactured homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Commercial Real Estate | Consumer loans: | Floating homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Commercial Real Estate | Consumer loans: | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Commercial Real Estate | Commercial business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	609	748
Residential Real Estate | Real estate loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	609	748
Residential Real Estate | Real estate loans: | One- to four- family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	311	664
Residential Real Estate | Real estate loans: | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	298	84
Residential Real Estate | Real estate loans: | Commercial and multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Residential Real Estate | Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Residential Real Estate | Consumer loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Residential Real Estate | Consumer loans: | Manufactured homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Residential Real Estate | Consumer loans: | Floating homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Residential Real Estate | Consumer loans: | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Residential Real Estate | Commercial business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	24	0
Land | Real estate loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	24	0
Land | Real estate loans: | One- to four- family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Land | Real estate loans: | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Land | Real estate loans: | Commercial and multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Land | Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	24
Land | Consumer loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Land | Consumer loans: | Manufactured homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Land | Consumer loans: | Floating homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Land | Consumer loans: | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Land | Commercial business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Other Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	3,248	2,908
Other Residential | Real estate loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	364	545
Other Residential | Real estate loans: | One- to four- family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	364	545
Other Residential | Real estate loans: | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	0
Other Residential | Real estate loans: | Commercial and multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Other Residential | Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Other Residential | Consumer loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	2,884	228
Other Residential | Consumer loans: | Manufactured homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	521	228
Other Residential | Consumer loans: | Floating homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	2,363
Other Residential | Consumer loans: | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Other Residential | Commercial business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0	$ 2,135
RVs/Automobiles
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	1
RVs/Automobiles | Real estate loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
RVs/Automobiles | Real estate loans: | One- to four- family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
RVs/Automobiles | Real estate loans: | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
RVs/Automobiles | Real estate loans: | Commercial and multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
RVs/Automobiles | Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
RVs/Automobiles | Consumer loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	1
RVs/Automobiles | Consumer loans: | Manufactured homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
RVs/Automobiles | Consumer loans: | Floating homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
RVs/Automobiles | Consumer loans: | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	1
RVs/Automobiles | Commercial business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	11
Business Assets | Real estate loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Real estate loans: | One- to four- family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Real estate loans: | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Real estate loans: | Commercial and multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Real estate loans: | Construction and land
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Consumer loans:
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Consumer loans: | Manufactured homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Consumer loans: | Floating homes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Consumer loans: | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	0
Business Assets | Commercial business loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for credit loss	$ 11