Note 4 - Loans and Leases - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loans	$ 1,123,343	$ 981,447
Commercial Loans [Member]
Loans	819,476	695,353
Accruing Loans [Member]
Loans	302,893	285,304
Nonaccrual Loans [Member]
Loans	974	790
Subtotal, Other Loans [Member]
Loans	303,867	286,094
Pass [Member] | Commercial Loans [Member]
Loans	799,332	676,421
Special Mention [Member] | Commercial Loans [Member]
Loans	9,142	10,639
Substandard [Member] | Commercial Loans [Member]
Loans	11,002	8,293
Doubtful [Member] | Commercial Loans [Member]
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] | Commercial Loans [Member]
Loans	0	0
Residential Portfolio Segment [Member]
Loans	250,221	234,113
Residential Portfolio Segment [Member] | Commercial Loans [Member]
Loans	43,721	42,635
Residential Portfolio Segment [Member] | Accruing Loans [Member]
Loans	205,887	190,919
Residential Portfolio Segment [Member] | Nonaccrual Loans [Member]
Loans	613	559
Residential Portfolio Segment [Member] | Subtotal, Other Loans [Member]
Loans	206,500	191,478
Residential Portfolio Segment [Member] | Pass [Member] | Commercial Loans [Member]
Loans	43,188	42,028
Residential Portfolio Segment [Member] | Special Mention [Member] | Commercial Loans [Member]
Loans	434	530
Residential Portfolio Segment [Member] | Substandard [Member] | Commercial Loans [Member]
Loans	99	77
Residential Portfolio Segment [Member] | Doubtful [Member] | Commercial Loans [Member]
Loans	0	0
Residential Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Commercial Loans [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member]
Loans	376,976	366,009
Commercial Real Estate Portfolio Segment [Member] | Commercial Loans [Member]
Loans	376,976	366,009
Commercial Real Estate Portfolio Segment [Member] | Accruing Loans [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Nonaccrual Loans [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Subtotal, Other Loans [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Commercial Loans [Member]
Loans	367,866	350,904
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Commercial Loans [Member]
Loans	7,082	8,232
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Commercial Loans [Member]
Loans	2,028	6,873
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Commercial Loans [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Commercial Loans [Member]
Loans	0	0
Construction, Land Acquisition and Development [Member]
Loans	66,555	41,646
Construction, Land Acquisition and Development [Member] | Commercial Loans [Member]
Loans	63,762	34,869
Construction, Land Acquisition and Development [Member] | Accruing Loans [Member]
Loans	2,793	6,777
Construction, Land Acquisition and Development [Member] | Nonaccrual Loans [Member]
Loans	0	0
Construction, Land Acquisition and Development [Member] | Subtotal, Other Loans [Member]
Loans	2,793	6,777
Construction, Land Acquisition and Development [Member] | Pass [Member] | Commercial Loans [Member]
Loans	62,965	34,869
Construction, Land Acquisition and Development [Member] | Special Mention [Member] | Commercial Loans [Member]
Loans	797	0
Construction, Land Acquisition and Development [Member] | Substandard [Member] | Commercial Loans [Member]
Loans	0	0
Construction, Land Acquisition and Development [Member] | Doubtful [Member] | Commercial Loans [Member]
Loans	0	0
Construction, Land Acquisition and Development [Member] | Unlikely to be Collected Financing Receivable [Member] | Commercial Loans [Member]
Loans	0	0
Commercial and Industrial [Member]
Loans	272,024	193,086
Commercial and Industrial [Member] | Commercial Loans [Member]
Loans	270,062	190,774
Commercial and Industrial [Member] | Accruing Loans [Member]
Loans	1,962	2,312
Commercial and Industrial [Member] | Nonaccrual Loans [Member]
Loans	0	0
Commercial and Industrial [Member] | Subtotal, Other Loans [Member]
Loans	1,962	2,312
Commercial and Industrial [Member] | Pass [Member] | Commercial Loans [Member]
Loans	260,358	187,554
Commercial and Industrial [Member] | Special Mention [Member] | Commercial Loans [Member]
Loans	829	1,877
Commercial and Industrial [Member] | Substandard [Member] | Commercial Loans [Member]
Loans	8,875	1,343
Commercial and Industrial [Member] | Doubtful [Member] | Commercial Loans [Member]
Loans	0	0
Commercial and Industrial [Member] | Unlikely to be Collected Financing Receivable [Member] | Commercial Loans [Member]
Loans	0	0
Consumer Portfolio Segment [Member]
Loans	92,612	85,522
Consumer Portfolio Segment [Member] | Commercial Loans [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Accruing Loans [Member]
Loans	92,251	85,291
Consumer Portfolio Segment [Member] | Nonaccrual Loans [Member]
Loans	361	231
Consumer Portfolio Segment [Member] | Subtotal, Other Loans [Member]
Loans	92,612	85,522
Consumer Portfolio Segment [Member] | Pass [Member] | Commercial Loans [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Special Mention [Member] | Commercial Loans [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Substandard [Member] | Commercial Loans [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Doubtful [Member] | Commercial Loans [Member]
Loans	0	0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Commercial Loans [Member]
Loans	0	0
State and Political Subdivisions [Member]
Loans	64,955	61,071
State and Political Subdivisions [Member] | Commercial Loans [Member]
Loans	64,955	61,066
State and Political Subdivisions [Member] | Accruing Loans [Member]
Loans	0	5
State and Political Subdivisions [Member] | Nonaccrual Loans [Member]
Loans	0	0
State and Political Subdivisions [Member] | Subtotal, Other Loans [Member]
Loans	0	5
State and Political Subdivisions [Member] | Pass [Member] | Commercial Loans [Member]
Loans	64,955	61,066
State and Political Subdivisions [Member] | Special Mention [Member] | Commercial Loans [Member]
Loans	0	0
State and Political Subdivisions [Member] | Substandard [Member] | Commercial Loans [Member]
Loans	0	0
State and Political Subdivisions [Member] | Doubtful [Member] | Commercial Loans [Member]
Loans	0	0
State and Political Subdivisions [Member] | Unlikely to be Collected Financing Receivable [Member] | Commercial Loans [Member]
Loans	$ 0	$ 0