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Loans and Allowance for Credit Losses - Classes of loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Classes of loans
Total loans	$ 112,269		$ 109,595
Deferred Loan Costs	151		116
Allowance for credit losses	860	$ 840	842	$ 813	$ 745	$ 700
Net loans	111,560		108,869
U.S. Department of Agriculture Guaranteed Loans
Classes of loans
Net loans	2,645		2,542
Mortgage loans on real estate
Classes of loans
Total loans	102,998		100,158
Mortgage loans on real estate \| Residential 1-4 family
Classes of loans
Total loans	69,991		69,197
Allowance for credit losses	281	278		268	266
Mortgage loans on real estate \| Commercial
Classes of loans
Total loans	31,614		29,428
Allowance for credit losses	467	453		426	383
Mortgage loans on real estate \| Construction and Land Development
Classes of loans
Total loans	1,393		1,533
Allowance for credit losses	13	13		10	11
Commercial loans
Classes of loans
Total loans	5,914		5,700
Allowance for credit losses	76	72	74	88	66	60
Commercial loans \| Residential 1-4 family
Classes of loans
Allowance for credit losses	281		283	268		271
Commercial loans \| Commercial
Classes of loans
Allowance for credit losses	467		449	426		339
Commercial loans \| Construction and Land Development
Classes of loans
Allowance for credit losses	13		11	10		13
Consumer
Classes of loans
Total loans	3,357		3,737
Allowance for credit losses	$ 23	$ 24	$ 25	$ 21	$ 19	$ 17