Loans - Schedule of Recorded Investment Aging In Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Total Loans	$ 900,171	$ 894,452
90 Days and Greater Past Due and Accruing	0	0
Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	8,246	13,299
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	715	5,024
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	638	5,211
90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	6,895	3,064
Current
Financing Receivable, Past Due [Line Items]
Total Loans	891,925	881,153
Real estate loans: | One- to four- family
Financing Receivable, Past Due [Line Items]
Total Loans	269,809	279,712
90 Days and Greater Past Due and Accruing	0	0
Real estate loans: | One- to four- family | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	725	1,701
Real estate loans: | One- to four- family | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	34	168
Real estate loans: | One- to four- family | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	339	870
Real estate loans: | One- to four- family | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	352	663
Real estate loans: | One- to four- family | Current
Financing Receivable, Past Due [Line Items]
Total Loans	269,084	278,011
Real estate loans: | Home equity
Financing Receivable, Past Due [Line Items]
Total Loans	26,896	23,322
90 Days and Greater Past Due and Accruing	0	0
Real estate loans: | Home equity | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	315	429
Real estate loans: | Home equity | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	249	345
Real estate loans: | Home equity | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Real estate loans: | Home equity | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	66	84
Real estate loans: | Home equity | Current
Financing Receivable, Past Due [Line Items]
Total Loans	26,581	22,893
Real estate loans: | Commercial and multifamily
Financing Receivable, Past Due [Line Items]
Total Loans	370,282	314,300
90 Days and Greater Past Due and Accruing	0	0
Real estate loans: | Commercial and multifamily | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	3,731	5,151
Real estate loans: | Commercial and multifamily | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	4,116
Real estate loans: | Commercial and multifamily | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	1,036
Real estate loans: | Commercial and multifamily | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	3,733	0
Real estate loans: | Commercial and multifamily | Current
Financing Receivable, Past Due [Line Items]
Total Loans	366,551	309,149
Real estate loans: | Construction and land
Financing Receivable, Past Due [Line Items]
Total Loans	72,812	125,940
90 Days and Greater Past Due and Accruing	0	0
Real estate loans: | Construction and land | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	24	0
Real estate loans: | Construction and land | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	24	0
Real estate loans: | Construction and land | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Real estate loans: | Construction and land | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Real estate loans: | Construction and land | Current
Financing Receivable, Past Due [Line Items]
Total Loans	72,788	125,940
Consumer loans: | Manufactured homes
Financing Receivable, Past Due [Line Items]
Total Loans	40,980	36,085
90 Days and Greater Past Due and Accruing	0	0
Consumer loans: | Manufactured homes | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	1,083	533
Consumer loans: | Manufactured homes | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	402	295
Consumer loans: | Manufactured homes | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	287	49
Consumer loans: | Manufactured homes | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	394	189
Consumer loans: | Manufactured homes | Current
Financing Receivable, Past Due [Line Items]
Total Loans	39,897	35,552
Consumer loans: | Floating homes
Financing Receivable, Past Due [Line Items]
Total Loans	85,990	74,733
90 Days and Greater Past Due and Accruing	0	0
Consumer loans: | Floating homes | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	2,350	3,226
Consumer loans: | Floating homes | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Consumer loans: | Floating homes | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	3,226
Consumer loans: | Floating homes | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	2,350	0
Consumer loans: | Floating homes | Current
Financing Receivable, Past Due [Line Items]
Total Loans	83,640	71,507
Consumer loans: | Other consumer
Financing Receivable, Past Due [Line Items]
Total Loans	17,738	19,615
90 Days and Greater Past Due and Accruing	0	0
Consumer loans: | Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	18	65
Consumer loans: | Other consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	6	34
Consumer loans: | Other consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	12	31
Consumer loans: | Other consumer | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Consumer loans: | Other consumer | Current
Financing Receivable, Past Due [Line Items]
Total Loans	17,720	19,550
Commercial business
Financing Receivable, Past Due [Line Items]
Total Loans	15,664	20,745
90 Days and Greater Past Due and Accruing	0	0
Commercial business | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	2,194
Commercial business | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	66
Commercial business | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Commercial business | 90 Days and Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	0	2,128
Commercial business | Current
Financing Receivable, Past Due [Line Items]
Total Loans	$ 15,664	$ 18,551