Note 5 - Loans and Leases - Change in Allowance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Beginning balance	$ 18,886	$ 17,910	$ 18,806	$ 17,149	$ 17,149
Charge-offs	(251)	(293)	(477)	(597)
Recoveries	65	58	246	199
Provision for credit losses on loans	275	675	400	855
Ending balance	18,975	18,350	18,975	18,350	18,806
Initial allowance on loans purchased with credit deterioration				126
Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance				618	618
Commercial Portfolio Segment [Member]
Beginning balance	1,904	2,550	1,850	2,924	2,924
Charge-offs	(39)	(150)	(153)	(320)
Recoveries	3	1	5	22
Provision for credit losses on loans	313	(40)	479	(543)
Ending balance	2,181	2,361	2,181	2,361	1,850
Initial allowance on loans purchased with credit deterioration				0
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance				278	278
Commercial Real Estate Portfolio Segment [Member]
Beginning balance	8,824	8,157	8,835	7,162	7,162
Charge-offs	(126)	0	(131)	(32)
Recoveries	0	2	155	41
Provision for credit losses on loans	(11)	419	(172)	525
Ending balance	8,687	8,578	8,687	8,578	8,835
Initial allowance on loans purchased with credit deterioration				126
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance				756	756
Consumer Portfolio Segment [Member]
Beginning balance	2,263	2,448	2,391	2,827	2,827
Charge-offs	(86)	(143)	(193)	(245)
Recoveries	19	55	41	126
Provision for credit losses on loans	172	154	129	353
Ending balance	2,368	2,514	2,368	2,514	2,391
Initial allowance on loans purchased with credit deterioration				0
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance				(547)	(547)
Residential Portfolio Segment [Member]
Beginning balance	5,846	4,683	5,694	4,169	4,169
Charge-offs	0	0	0	0
Recoveries	43	0	45	10
Provision for credit losses on loans	(163)	164	(13)	470
Ending balance	5,726	4,847	5,726	4,847	5,694
Initial allowance on loans purchased with credit deterioration				0
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance				198	198
Unallocated Financing Receivables [Member]
Beginning balance	49	72	36	67	67
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses on loans	(36)	(22)	(23)	50
Ending balance	$ 13	$ 50	$ 13	50	36
Initial allowance on loans purchased with credit deterioration				0
Unallocated Financing Receivables [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance				$ (67)	$ (67)