Note 4 - Loans and Allowance for Credit Losses - Major Categories of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025	Dec. 31, 2024
Loans	$ 641,901	$ 638,340
Loans, allowance for credit losses	4,518	4,361	$ 4,233	$ 4,260
Deferred origination fees net of costs	834	835
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss	636,549	633,144
Commercial Real Estate Portfolio Segment [Member]
Loans	441,266	432,726
Loans, allowance for credit losses	2,434	2,384	2,946	2,481
Construction and Land Development [Member]
Loans	31,576	36,352
Loans, allowance for credit losses	520	520
Residential Portfolio Segment [Member]
Loans	118,803	118,924
Loans, allowance for credit losses	654	644	219	751
Commercial Portfolio Segment [Member]
Loans	50,146	49,869
Loans, allowance for credit losses	762	762	608	513
Consumer Portfolio Segment [Member]
Loans	110	469
Loans, allowance for credit losses	$ 1	$ 1	$ 0	$ 4

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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