Loans Receivable and Allowance for Credit Losses - Analysis of past-due loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	$ 377,366	$ 368,253
Nonaccrual Loans	544	1,075
30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	3,135	3,348
60-89 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	1,194	1,011
Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	372,493	362,819
Real Estate Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	358,950	350,793
Nonaccrual Loans	544	1,075
Real Estate Loans \| 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	3,135	3,257
Real Estate Loans \| 60-89 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	1,194	1,011
Real Estate Loans \| Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	354,077	345,450
Real Estate Loans \| One-to-Four Family Mortgages
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	325,774	332,659
Nonaccrual Loans	544	956
Real Estate Loans \| One-to-Four Family Mortgages \| 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	2,933	2,925
Real Estate Loans \| One-to-Four Family Mortgages \| 60-89 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	1,194	1,011
Real Estate Loans \| One-to-Four Family Mortgages \| Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	321,103	327,767
Real Estate Loans \| Home Equity Lines of Credit
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	10,091	7,952
Real Estate Loans \| Home Equity Lines of Credit \| 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	72
Real Estate Loans \| Home Equity Lines of Credit \| Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	10,019	7,952
Real Estate Loans \| Construction and Land
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	12,538	9,588
Nonaccrual Loans		119
Real Estate Loans \| Construction and Land \| 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	130	332
Real Estate Loans \| Construction and Land \| Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	12,408	9,137
Real Estate Loans \| Commercial Real Estate
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	10,547	594
Real Estate Loans \| Commercial Real Estate \| Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	10,547	594
Other Loans \| Commercial and Industrial
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	14,227	13,761
Other Loans \| Commercial and Industrial \| Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	14,227	13,761
Other Loans \| Consumer
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	4,189	3,699
Other Loans \| Consumer \| 30-59 Days Past Due
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable		91
Other Loans \| Consumer \| Current Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	$ 4,189	$ 3,608