Loans - Schedule of Investment in Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	$ 9,653	$ 7,491
Total Nonaccrual Loans with no ACL	9,652	7,489
Real estate loans: | One-to-four family:
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	762	537
Total Nonaccrual Loans with no ACL	762	537
Real estate loans: | Home equity:
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	368	298
Total Nonaccrual Loans with no ACL	368	298
Real estate loans: | Commercial and multifamily:
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	5,627	3,734
Total Nonaccrual Loans with no ACL	5,627	3,734
Real estate loans: | Construction and land:
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	22	24
Total Nonaccrual Loans with no ACL	22	24
Consumer loans: | Manufactured homes:
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	501	521
Total Nonaccrual Loans with no ACL	501	521
Consumer loans: | Floating homes:
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	2,363	2,363
Total Nonaccrual Loans with no ACL	2,363	2,363
Consumer loans: | Other consumer:
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	10	3
Total Nonaccrual Loans with no ACL	9	1
Commercial business loans
Financing Receivable, Past Due [Line Items]
Total Nonaccrual Loans	0	11
Total Nonaccrual Loans with no ACL	$ 0	$ 11