Note 4 - Loans/Leases Receivable - Composition Of Allowance For Credit Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	$ 83,976	$ 74,826
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	6,459,440	6,064,045
Gross loans/leases receivable	6,543,416	6,138,871
Allowance for Credit Losses, Individually Evaluated for Credit Losses	8,518	6,928
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	78,682	80,778
Allowance for Credit Losses, Total	87,200	87,706	$ 78,721
Construction Loans [Member]
Gross loans/leases receivable	1,420,525	1,192,061
C&I
Gross loans/leases receivable	1,807,021	1,748,562
C&I | Commercial And Industrial [Member]
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses		12,744
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses		1,767,707
Gross loans/leases receivable		1,780,451
Allowance for Credit Losses, Individually Evaluated for Credit Losses		2,406
Allowance for Credit Losses, Collectively Evaluated for Credit Losses		29,804
Allowance for Credit Losses, Total		32,210
C&I | C&I - revolving
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	4,680	3,386
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	320,563	293,483
Gross loans/leases receivable	325,243	296,869
Allowance for Credit Losses, Individually Evaluated for Credit Losses	632	961
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	3,592	3,496
Allowance for Credit Losses, Total	4,224	4,457	3,907
C&I | C&I - other including lease
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	20,133	9,358
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	1,492,809	1,474,224
Gross loans/leases receivable	1,512,942	1,483,582
Allowance for Credit Losses, Individually Evaluated for Credit Losses	3,642	1,445
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	23,818	26,308
Allowance for Credit Losses, Total	27,460	27,753	25,982
C&I | Owner occupied
Allowance for Credit Losses, Total		9,965	8,501
C&I | Commercial And Industrial Revolving Other Including Lease
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	24,813
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	1,813,372
Gross loans/leases receivable	1,838,185
Allowance for Credit Losses, Individually Evaluated for Credit Losses	4,274
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	27,410
Allowance for Credit Losses, Total	31,684
CRE | Owner occupied
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	22,709	24,880
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	584,656	604,487
Gross loans/leases receivable	607,365	629,367
Allowance for Credit Losses, Individually Evaluated for Credit Losses	2,426	2,853
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	5,797	7,112
Allowance for Credit Losses, Total	8,223	9,965	8,501
CRE | Non-owner occupied
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	21,886	21,588
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	987,006	941,651
Gross loans/leases receivable	1,008,892	963,239
Allowance for Credit Losses, Individually Evaluated for Credit Losses	661	869
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	10,920	10,880
Allowance for Credit Losses, Total	11,581	11,749	8,549
Construction and land development
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	2,726
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	1,417,799
Gross loans/leases receivable	1,420,525	1,192,061
Allowance for Credit Losses, Individually Evaluated for Credit Losses	809
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	16,047
Allowance for Credit Losses, Total	16,856	14,262	16,972
Construction and land development | Construction Loans [Member]
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses		10,394
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses		1,181,667
Gross loans/leases receivable		1,192,061
Allowance for Credit Losses, Individually Evaluated for Credit Losses		13
Allowance for Credit Losses, Collectively Evaluated for Credit Losses		14,249
Allowance for Credit Losses, Total		14,262
Multi-family
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	8,206	1,302
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	987,937	962,501
Gross loans/leases receivable	996,143	963,803
Allowance for Credit Losses, Individually Evaluated for Credit Losses	3	395
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	12,460	12,791
Allowance for Credit Losses, Total	12,463	13,186	9,339
1-4 family real estate
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	3,128	3,177
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	541,843	496,352
Gross loans/leases receivable	544,971	499,529
Allowance for Credit Losses, Individually Evaluated for Credit Losses	289	317
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	4,628	4,646
Allowance for Credit Losses, Total	4,917	4,963	4,541
Consumer
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	508	741
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	126,827	109,680
Gross loans/leases receivable	127,335	110,421
Allowance for Credit Losses, Individually Evaluated for Credit Losses	56	75
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	1,420	1,296
Allowance for Credit Losses, Total	1,476	1,371	930
Direct financing leases
Gross loans/leases receivable	31,164	31,889
Allowance for Credit Losses, Total	992	970
Direct financing leases | C&I - other including lease
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	289	135
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	30,900	31,800
Allowance for Credit Losses, Individually Evaluated for Credit Losses	68	24
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	924	946
Allowance for Credit Losses, Total	$ 992	$ 970	$ 1,500