Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Credit Risk Profile by Internally Assigned Grade (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Loans	$ 668,833	$ 726,482
Commercial Portfolio Segment [Member]
Loans	104,806	117,009
Commercial Real Estate Portfolio Segment [Member]
Loans	459,198	482,230
Residential Portfolio Segment [Member]
Loans	6,410	7,186
Consumer Portfolio Segment [Member]
Loans	98,419	120,057
Pass [Member]
Loans	652,613	714,020
Pass [Member] \| Commercial Portfolio Segment [Member]
Loans	101,268	114,861
Pass [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	448,215	474,140
Pass [Member] \| Residential Portfolio Segment [Member]
Loans	6,213	6,983
Pass [Member] \| Consumer Portfolio Segment [Member]
Loans	96,917	118,036
Substandard [Member]
Loans	15,553	10,992
Substandard [Member] \| Commercial Portfolio Segment [Member]
Loans	3,196	1,053
Substandard [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	10,983	8,090
Substandard [Member] \| Residential Portfolio Segment [Member]
Loans	197	203
Substandard [Member] \| Consumer Portfolio Segment [Member]
Loans	1,177	1,646
Doubtful [Member]
Loans	376	1,152
Doubtful [Member] \| Commercial Portfolio Segment [Member]
Loans	342	1,095
Doubtful [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	0	0
Doubtful [Member] \| Residential Portfolio Segment [Member]
Loans	0	0
Doubtful [Member] \| Consumer Portfolio Segment [Member]
Loans	34	57
Unlikely to be Collected Financing Receivable [Member]
Loans	291	318
Unlikely to be Collected Financing Receivable [Member] \| Commercial Portfolio Segment [Member]
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] \| Residential Portfolio Segment [Member]
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] \| Consumer Portfolio Segment [Member]
Loans	$ 291	$ 318