Note 3 - Loans and Allowance for Credit Losses on Loans - Aging of the Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Loans	$ 6,070,963	$ 5,771,038
Commercial Real Estate Portfolio Segment [Member]
Loans	2,595,627	2,469,113
Commercial and Industrial Portfolio Segment [Member]
Loans	868,093	867,380
Total Commercial and Industrial Portfolio Segment [Member]
Loans	1,356,970	1,307,128
Residential Real Estate Portfolio Segment [Member]
Loans	1,115,716	1,067,608
Construction and Development [Member]
Loans	586,820	531,324
Consumer Portfolio Segment [Member]
Loans	151,221	145,340
Finance Leases Portfolio Segment [Member]
Loans	17,258	15,503
Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	1,652,614	1,561,689
Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	365,846	358,715
Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	943,013	907,424
Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	749,870	708,893
Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	868,093	867,380
Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	488,877	439,748
Home Equity Line of Credit [Member]
Loans	223,304	211,390
Credit Card Receivable [Member]
Loans	24,047	23,632
Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans	24,047	23,632
Financial Asset, Not Past Due [Member]
Loans	6,039,114	5,753,716
Financial Asset, Not Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	2,590,958	2,465,141
Financial Asset, Not Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans	1,346,804	1,305,760
Financial Asset, Not Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	1,100,612	1,057,238
Financial Asset, Not Past Due [Member] | Construction and Development [Member]
Loans	586,820	531,324
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member]
Loans	150,372	144,640
Financial Asset, Not Past Due [Member] | Finance Leases Portfolio Segment [Member]
Loans	17,258	15,503
Financial Asset, Not Past Due [Member] | Non-owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	1,650,235	1,558,756
Financial Asset, Not Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	364,860	357,763
Financial Asset, Not Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	940,723	906,385
Financial Asset, Not Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	735,752	699,475
Financial Asset, Not Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	860,823	866,089
Financial Asset, Not Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	485,981	439,671
Financial Asset, Not Past Due [Member] | Home Equity Line of Credit [Member]
Loans	222,522	210,823
Financial Asset, Not Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans	23,768	23,287
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	19,632	8,274
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	1,757	1,526
Financial Asset, 30 to 59 Days Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans	8,143	321
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	8,690	5,911
Financial Asset, 30 to 59 Days Past Due [Member] | Construction and Development [Member]
Loans	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Loans	482	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	926	768
Financial Asset, 30 to 59 Days Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	525	621
Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	831	758
Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	8,165	5,290
Financial Asset, 30 to 59 Days Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	5,296	244
Financial Asset, 30 to 59 Days Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	2,847	77
Financial Asset, 30 to 59 Days Past Due [Member] | Home Equity Line of Credit [Member]
Loans	456	67
Financial Asset, 30 to 59 Days Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans	104	191
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	5,105	2,508
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	1,762	578
Financial Asset, 60 to 89 Days Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans	427	2
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	2,566	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	236	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	522	318
Financial Asset, 60 to 89 Days Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	41	94
Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	1,240	260
Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	2,525	1,612
Financial Asset, 60 to 89 Days Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	427	2
Financial Asset, 60 to 89 Days Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Home Equity Line of Credit [Member]
Loans	75	33
Financial Asset, 60 to 89 Days Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans	39	44
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	7,112	6,540
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	1,150	1,868
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans	1,596	1,045
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	3,848	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	131	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	931	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	420	237
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	219	21
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	3,428	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	1,547	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	49	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Home Equity Line of Credit [Member]
Loans	251	467
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans	136	110
Financial Asset, Past Due [Member]
Loans	31,849	17,322
Financial Asset, Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	4,669	3,972
Financial Asset, Past Due [Member] | Total Commercial and Industrial Portfolio Segment [Member]
Loans	10,166	1,368
Financial Asset, Past Due [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	15,104	10,370
Financial Asset, Past Due [Member] | Construction and Development [Member]
Loans	0	0
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member]
Loans	849	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	2,379	2,933
Financial Asset, Past Due [Member] | Non-owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	986	952
Financial Asset, Past Due [Member] | Owner Occupied [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	2,290	1,039
Financial Asset, Past Due [Member] | Owner Occupied [Member] | Residential Real Estate Portfolio Segment [Member]
Loans	14,118	9,418
Financial Asset, Past Due [Member] | Term, Excluding PPP [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	7,270	1,291
Financial Asset, Past Due [Member] | Lines of Credit [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans	2,896	77
Financial Asset, Past Due [Member] | Home Equity Line of Credit [Member]
Loans	782	567
Financial Asset, Past Due [Member] | Credit Card Receivable [Member] | Commercial Portfolio Segment [Member]
Loans	$ 279	$ 345