Note 3 - Loans and Allowance for Credit Losses on Loans - Aging of the Recorded Investment in Loans (Details) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Loans	[1]	$ 6,278,133	$ 5,771,038
Commercial Real Estate Portfolio Segment [Member]
Loans		2,635,986	2,469,113
Commercial and Industrial Portfolio Segment [Member]
Loans		865,384	867,380
Total Commercial and Industrial Portfolio Segment [Member]
Loans		1,379,293	1,307,128
Residential Real Estate Portfolio Segment [Member]
Loans		1,164,388	1,067,608
Construction and Development [Member]
Loans		674,918	531,324
Consumer Portfolio Segment [Member]
Loans		143,684	145,340
Finance Leases Portfolio Segment [Member]
Loans		16,760	15,503
Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		1,686,448	1,561,689
Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		381,051	358,715
Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		949,538	907,424
Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		783,337	708,893
Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		865,384	867,380
Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		513,909	439,748
Home Equity Line of Credit [Member]
Loans		236,819	211,390
Credit Card Receivable [Member]
Loans		26,285	23,632
Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans		26,285	23,632
Financial Asset, Not Past Due [Member]
Loans		6,250,332	5,753,716
Financial Asset, Not Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		2,629,189	2,465,141
Financial Asset, Not Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans		1,375,280	1,305,760
Financial Asset, Not Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		1,148,971	1,057,238
Financial Asset, Not Past Due [Member] | Construction and Development [Member]
Loans		674,838	531,324
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member]
Loans		142,722	144,640
Financial Asset, Not Past Due [Member] | Finance Leases Portfolio Segment [Member]
Loans		16,760	15,503
Financial Asset, Not Past Due [Member] | Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		1,681,673	1,558,756
Financial Asset, Not Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		379,813	357,763
Financial Asset, Not Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		947,516	906,385
Financial Asset, Not Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		769,158	699,475
Financial Asset, Not Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		861,691	866,089
Financial Asset, Not Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		513,589	439,671
Financial Asset, Not Past Due [Member] | Home Equity Line of Credit [Member]
Loans		236,664	210,823
Financial Asset, Not Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans		25,908	23,287
Financial Asset, 30 to 59 Days Past Due [Member]
Loans		9,235	8,274
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		1,119	1,526
Financial Asset, 30 to 59 Days Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans		235	321
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		7,013	5,911
Financial Asset, 30 to 59 Days Past Due [Member] | Construction and Development [Member]
Loans		80	0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Loans		450	258
Financial Asset, 30 to 59 Days Past Due [Member] | Finance Leases Portfolio Segment [Member]
Loans		0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		3	768
Financial Asset, 30 to 59 Days Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		0	621
Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		1,116	758
Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		7,013	5,290
Financial Asset, 30 to 59 Days Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		235	244
Financial Asset, 30 to 59 Days Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		0	77
Financial Asset, 30 to 59 Days Past Due [Member] | Home Equity Line of Credit [Member]
Loans		130	67
Financial Asset, 30 to 59 Days Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans		208	191
Financial Asset, 60 to 89 Days Past Due [Member]
Loans		9,271	2,508
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		4,298	578
Financial Asset, 60 to 89 Days Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans		320	2
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		4,369	1,706
Financial Asset, 60 to 89 Days Past Due [Member] | Construction and Development [Member]
Loans		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Loans		214	145
Financial Asset, 60 to 89 Days Past Due [Member] | Finance Leases Portfolio Segment [Member]
Loans		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		4,236	318
Financial Asset, 60 to 89 Days Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		648	94
Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		62	260
Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		3,721	1,612
Financial Asset, 60 to 89 Days Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		0	2
Financial Asset, 60 to 89 Days Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		320	0
Financial Asset, 60 to 89 Days Past Due [Member] | Home Equity Line of Credit [Member]
Loans		0	33
Financial Asset, 60 to 89 Days Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans		70	44
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans		9,295	6,540
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		1,380	1,868
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans		3,458	1,045
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		4,035	2,753
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction and Development [Member]
Loans		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Loans		298	297
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Finance Leases Portfolio Segment [Member]
Loans		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		536	1,847
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		590	237
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		844	21
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		3,445	2,516
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		3,458	1,045
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Home Equity Line of Credit [Member]
Loans		25	467
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans		99	110
Financial Asset, Past Due [Member]
Loans		27,801	17,322
Financial Asset, Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		6,797	3,972
Financial Asset, Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans		4,013	1,368
Financial Asset, Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		15,417	10,370
Financial Asset, Past Due [Member] | Construction and Development [Member]
Loans		80	0
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member]
Loans		962	700
Financial Asset, Past Due [Member] | Finance Leases Portfolio Segment [Member]
Loans		0	0
Financial Asset, Past Due [Member] | Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		4,775	2,933
Financial Asset, Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		1,238	952
Financial Asset, Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans		2,022	1,039
Financial Asset, Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans		14,179	9,418
Financial Asset, Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		3,693	1,291
Financial Asset, Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans		320	77
Financial Asset, Past Due [Member] | Home Equity Line of Credit [Member]
Loans		155	567
Financial Asset, Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans		$ 377	$ 345

[1] (1) Total loans are presented inclusive of premiums, discounts and net loan origination fees and costs.