Note 5 - Loans and the Allowance for Credit Losses - Activity in the ACL for Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Balance	$ 82,739	$ 78,684	$ 78,773	$ 79,226
Charge-offs	(413)	(1,727)	(989)	(1,939)
Recoveries	53	113	117	188
Provision for credit losses - loans	9,338	916	13,816	(6,046)
Balance	91,717	77,986	91,717	77,986
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				6,557
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance				85,783
Commercial Portfolio Segment [Member]
Balance	28,135	25,567	25,969	28,443
Charge-offs	(410)	(254)	(751)	(304)
Recoveries	53	1	54	74
Provision for credit losses - loans	1,911	2,022	4,417	3,348
Balance	29,689	27,336	29,689	27,336
Commercial Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				(4,225)
Commercial Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance				24,218
Commercial Real Estate Portfolio Segment [Member]
Balance	47,562	43,815	45,589	39,330
Charge-offs	0	(1,473)	(226)	(1,628)
Recoveries	0	85	0	85
Provision for credit losses - loans	6,964	915	9,163	(4,050)
Balance	54,526	43,342	54,526	43,342
Commercial Real Estate Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				9,605
Commercial Real Estate Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance				48,935
Commercial Construction Portfolio Segment [Member]
Balance	3,413	4,927	3,580	8,194
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses - loans	31	(1,225)	(136)	(3,531)
Balance	3,444	3,702	3,444	3,702
Commercial Construction Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				(961)
Commercial Construction Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance				7,233
Residential Portfolio Segment [Member]
Balance	3,625	4,366	3,628	2,687
Charge-offs	0	0	(9)	(7)
Recoveries	0	20	63	20
Provision for credit losses - loans	428	(788)	371	(1,799)
Balance	4,053	3,598	4,053	3,598
Residential Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				2,697
Residential Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance				5,384
Consumer Portfolio Segment [Member]
Balance	4	9	7	4
Charge-offs	(3)	0	(3)	0
Recoveries	0	7	0	9
Provision for credit losses - loans	4	(8)	1	(14)
Balance	5	8	5	8
Consumer Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				9
Consumer Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance				13
Unallocated Financing Receivables [Member]
Balance	0	0	0	568
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses - loans	0	0	0	0
Balance	$ 0	$ 0	$ 0	0
Unallocated Financing Receivables [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				(568)
Unallocated Financing Receivables [Member] \| Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance				$ 0

Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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