Note 4 - Loans Leases Receivable - Composition Of Allowance For Credit Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance for Credit Losses, Individually Evaluated for Credit Losses	$ 2,554		$ 2,680
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	76,167		81,696
Allowance for Credit Losses, Total	78,721	$ 84,376	84,376	$ 36,001	$ 39,847
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	58,677		14,628
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	4,621,455		4,229,163
Loans and leases receivable	4,680,132		4,243,791
C&I - revolving
Loans and leases receivable	248,483
C&I - other
Loans and leases receivable	4,640
Owner Occupied Commercial Real Estate Loans [Member]
Allowance for Credit Losses, Total	8,501
CRE - non owner occupied
Allowance for Credit Losses, Total	8,549
Commercial Portfolio Segment [Member]
Allowance for Credit Losses, Individually Evaluated for Credit Losses	911		650
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	28,978		34,771
Allowance for Credit Losses, Total	29,889	35,421	35,421	16,072	16,420
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	16,094		5,381
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	1,624,182		1,721,342
Loans and leases receivable	1,595,085		1,726,723
Commercial Portfolio Segment [Member] | C&I - revolving
Allowance for Credit Losses, Individually Evaluated for Credit Losses	168
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	3,739
Allowance for Credit Losses, Total	3,907
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	2,638
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	245,845
Loans and leases receivable	248,483		1,726,723
Commercial Portfolio Segment [Member] | C&I - other
Allowance for Credit Losses, Individually Evaluated for Credit Losses	743
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	25,239
Allowance for Credit Losses, Total	25,982
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	13,456
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	1,378,337
Loans and leases receivable	1,346,602
Commercial Real Estate Portfolio Segment [Member]
Allowance for Credit Losses, Individually Evaluated for Credit Losses			1,938
Allowance for Credit Losses, Collectively Evaluated for Credit Losses			40,223
Allowance for Credit Losses, Total		42,161	42,161	15,379	17,719
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses			7,487
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses			2,100,142
Loans and leases receivable			2,107,629
Commercial Real Estate Portfolio Segment [Member] | C&I - revolving
Allowance for Credit Losses, Total	3,907
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Allowance for Credit Losses, Individually Evaluated for Credit Losses	1,264
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	7,237
Allowance for Credit Losses, Total	8,501
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	3,841
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	417,860
Loans and leases receivable	421,701		496,471
Commercial Real Estate Portfolio Segment [Member] | CRE - non owner occupied
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	8,549
Allowance for Credit Losses, Total	8,549
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	25,006
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	621,494
Loans and leases receivable	646,500
Construction and Land Development [Member]
Allowance for Credit Losses, Individually Evaluated for Credit Losses	11
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	16,961
Allowance for Credit Losses, Total	16,972
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	10,436
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	908,135
Multi-family
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	9,339
Allowance for Credit Losses, Total	9,339
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	600,412
Loans and leases receivable	600,412
1-4 family real estate
Allowance for Credit Losses, Individually Evaluated for Credit Losses	329
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	4,212
Allowance for Credit Losses, Total	4,541
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	2,950
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	374,411
Loans and leases receivable	377,361
Consumer
Allowance for Credit Losses, Individually Evaluated for Credit Losses	39
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	891
Allowance for Credit Losses, Total	930	1,298	1,298
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	350
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	74,961
Loans and leases receivable	75,311		91,302
Direct financing leases
Allowance for Credit Losses, Collectively Evaluated for Credit Losses			1,764
Allowance for Credit Losses, Total	1,546	1,764	1,764	1,464	1,792
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses			578
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses			65,438
Loans and leases receivable	45,191		66,016
Direct financing leases | C&I - other
Allowance for Credit Losses, Individually Evaluated for Credit Losses	35
Allowance for Credit Losses, Collectively Evaluated for Credit Losses	1,500
Allowance for Credit Losses, Total	1,780
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses	847
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses	$ 44,400
Residential real estate
Allowance for Credit Losses, Individually Evaluated for Credit Losses			20
Allowance for Credit Losses, Collectively Evaluated for Credit Losses			3,712
Allowance for Credit Losses, Total		$ 3,732	3,732	1,948	2,557
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses			977
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses			251,144
Loans and leases receivable			252,121
Installment and other consumer loans
Allowance for Credit Losses, Individually Evaluated for Credit Losses			72
Allowance for Credit Losses, Collectively Evaluated for Credit Losses			1,226
Allowance for Credit Losses, Total			1,298	$ 1,138	$ 1,359
Amortized Cost of Loans Receivable, Individually Evaluated for Credit Losses			205
Amortized Cost of Loans Receivable, Collectively Evaluated for Credit Losses			91,097
Loans and leases receivable			$ 91,302