Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Credit Risk Profile by Internally Assigned Grade (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Loans	$ 979,033	$ 1,068,126
Pass [Member]
Loans	963,089	1,049,854
Substandard [Member]
Loans	14,235	16,807
Doubtful [Member]
Loans	739	931
Unlikely to be Collected Financing Receivable [Member]
Loans	970	534
Commercial Portfolio Segment [Member]
Loans	180,416	233,090
Commercial Portfolio Segment [Member] | Pass [Member]
Loans	179,923	232,710
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans	493	380
Commercial Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Commercial Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member]
Loans	492,749	535,261
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Loans	480,476	521,300
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Loans	12,273	13,961
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Construction Portfolio Segment [Member]
Loans	2,635	48
Construction Portfolio Segment [Member] | Pass [Member]
Loans	2,635	48
Construction Portfolio Segment [Member] | Substandard [Member]
Loans	0	0
Construction Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Construction Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Residential Portfolio Segment [Member]
Loans	14,719	18,133
Residential Portfolio Segment [Member] | Pass [Member]
Loans	13,669	16,874
Residential Portfolio Segment [Member] | Substandard [Member]
Loans	1,050	1,259
Residential Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Residential Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Consumer Portfolio Segment [Member]
Loans	288,514	281,594
Consumer Portfolio Segment [Member] | Pass [Member]
Loans	286,386	278,922
Consumer Portfolio Segment [Member] | Substandard [Member]
Loans	419	1,207
Consumer Portfolio Segment [Member] | Doubtful [Member]
Loans	739	931
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	$ 970	$ 534