Loans Receivable and Allowance for Credit Losses - Analysis of past-due loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	$ 368,253	$ 367,050
Loans 90 Days or More Past Due and Still Accruing		950
Nonaccrual Loans	1,075	153
30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	3,348	2,688
60-89 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	1,011	1,528
Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	362,819	361,731
One-to-Four Family Mortgages
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	332,659	337,056
Loans 90 Days or More Past Due and Still Accruing		950
Nonaccrual Loans	956	153
One-to-Four Family Mortgages | 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	2,925	2,655
One-to-Four Family Mortgages | 60-89 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	1,011	1,524
One-to-Four Family Mortgages | Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	327,767	331,774
Home Equity Loans/Lines of Credit
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	7,952	8,550
Home Equity Loans/Lines of Credit | 60-89 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable		4
Home Equity Loans/Lines of Credit | Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	7,952	8,546
Construction Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	9,588	8,128
Nonaccrual Loans	119
Construction Loans | 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	332
Construction Loans | Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	9,137	8,128
Consumer Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	3,699	913
Consumer Loans | 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	91	33
Consumer Loans | Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	3,608	880
Commercial Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	14,355	12,403
Commercial Loans | Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	$ 14,355	$ 12,403