Note 5 - Loans and Leases - Change in Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023		Dec. 31, 2022
Beginning balance	$ 17,149		$ 15,624
Initial allowance on loans purchased with credit deterioration	126
Charge-offs	(874)		(815)
Recoveries	296		240
Provision for credit losses on loans	1,491		2,100
Ending balance	18,806		17,149
Ending balance: individually evaluated	193		161
Ending balance: collectively evaluated	18,613		16,988
Financing Receivable, before Allowance for Credit Loss	1,685,098	[1],[2]	1,564,174	[3],[4]
Ending balance: individually evaluated	6,856		3,868
Ending balance: collectively evaluated	1,678,242		1,560,306
Ending balance: individually evaluated for impairment	193		161
Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance	618
Ending balance			618
Commercial Portfolio Segment [Member]
Beginning balance	2,924		2,204
Initial allowance on loans purchased with credit deterioration	0
Charge-offs	(320)		(371)
Recoveries	57		11
Provision for credit losses on loans	(1,089)		1,080
Ending balance	1,850		2,924
Ending balance: individually evaluated	16		48
Ending balance: collectively evaluated	1,834		2,876
Financing Receivable, before Allowance for Credit Loss	247,364	[1]	234,478	[3]
Ending balance: individually evaluated	84		719
Ending balance: collectively evaluated	247,280		233,759
Ending balance: individually evaluated for impairment	16		48
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance	278
Ending balance			278
Commercial Real Estate Portfolio Segment [Member]
Beginning balance	7,162		7,422
Initial allowance on loans purchased with credit deterioration	126
Charge-offs	(91)		(67)
Recoveries	44		153
Provision for credit losses on loans	838		(346)
Ending balance	8,835		7,162
Ending balance: individually evaluated	165		112
Ending balance: collectively evaluated	8,670		7,050
Financing Receivable, before Allowance for Credit Loss	655,787	[1]	606,618	[3]
Ending balance: individually evaluated	5,686		2,782
Ending balance: collectively evaluated	650,101		603,836
Ending balance: individually evaluated for impairment	165		112
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance	756
Ending balance			756
Consumer Portfolio Segment [Member]
Beginning balance	2,827		2,404
Initial allowance on loans purchased with credit deterioration	0
Charge-offs	(463)		(377)
Recoveries	165		74
Provision for credit losses on loans	409		726
Ending balance	2,391		2,827
Ending balance: individually evaluated	11		1
Ending balance: collectively evaluated	2,380		2,826
Financing Receivable, before Allowance for Credit Loss	280,401	[1],[5]	282,710	[3],[6]
Ending balance: individually evaluated	473		364
Ending balance: collectively evaluated	279,928		282,346
Ending balance: individually evaluated for impairment	11		1
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance	(547)
Ending balance			(547)
Residential Portfolio Segment [Member]
Beginning balance	4,169		3,508
Initial allowance on loans purchased with credit deterioration	0
Charge-offs	0		0
Recoveries	30		2
Provision for credit losses on loans	1,297		659
Ending balance	5,694		4,169
Ending balance: individually evaluated	1		0
Ending balance: collectively evaluated	5,693		4,169
Financing Receivable, before Allowance for Credit Loss	501,546	[1]	440,368	[3]
Ending balance: individually evaluated	613		3
Ending balance: collectively evaluated	500,933		440,365
Ending balance: individually evaluated for impairment	1		0
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance	198
Ending balance			198
Unallocated Financing Receivables [Member]
Beginning balance	67		86
Initial allowance on loans purchased with credit deterioration	0
Charge-offs	0		0
Recoveries	0		0
Provision for credit losses on loans	36		(19)
Ending balance	36		67
Ending balance: individually evaluated	0		0
Ending balance: collectively evaluated	36		67
Financing Receivable, before Allowance for Credit Loss	0	[1]	0	[3]
Ending balance: individually evaluated	0		0
Ending balance: collectively evaluated	0		0
Ending balance: individually evaluated for impairment	0		0
Unallocated Financing Receivables [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance	$ (67)
Ending balance			$ (67)

[1] Includes $4.9 million of net deferred loan costs.

[2] Includes net deferred loan costs of $4.9 million.

[3] Includes $4.6 million of net deferred loan costs.

[4] Includes net deferred loan costs of $4.6 million.

[5] Net of unearned lease revenue of $2.0 million

[6] Net of unearned lease revenue of $1.7 million.