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Loans and Allowance for Credit Losses - Classes of loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Classes of loans
Total loans	$ 109,811	$ 109,595
Deferred Loan Costs	133	116
Allowance for credit losses	840	842	$ 745	$ 700
Net loans	109,104	108,869
U.S. Department of Agriculture Guaranteed Loans
Classes of loans
Net loans	2,511	2,542
Mortgage loans on real estate
Classes of loans
Total loans	100,806	100,158
Mortgage loans on real estate \| Residential 1-4 family
Classes of loans
Total loans	68,657	69,197
Allowance for credit losses	278	283	266	271
Mortgage loans on real estate \| Commercial
Classes of loans
Total loans	30,254	29,428
Allowance for credit losses	453	449	383	339
Mortgage loans on real estate \| Construction and Land Development
Classes of loans
Total loans	1,895	1,533
Allowance for credit losses	13	11	11	13
Commercial loans
Classes of loans
Total loans	5,592	5,700
Allowance for credit losses	72	74	66	60
Consumer
Classes of loans
Total loans	3,413	3,737
Allowance for credit losses	$ 24	$ 25	$ 19	$ 17