Note 5 - Loans and the Allowance for Credit Losses - Loans Receivable on Nonaccrual Status (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Nonaccrual loans with ACL	$ 38,932	$ 45,347
Nonaccrual loans without ACL	21,824	16,353
Total Nonaccrual loans	60,756	61,700
Commercial Portfolio Segment [Member]
Nonaccrual loans with ACL	27,875	28,746
Nonaccrual loans without ACL	1,263	1,316
Total Nonaccrual loans	29,138	30,062
Commercial Real Estate Portfolio Segment [Member]
Nonaccrual loans with ACL	10,162	15,362
Nonaccrual loans without ACL	19,021	10,031
Total Nonaccrual loans	29,183	25,393
Commercial Construction Portfolio Segment [Member]
Nonaccrual loans with ACL	0	0
Nonaccrual loans without ACL	0	3,150
Total Nonaccrual loans	0	3,150
Residential Portfolio Segment [Member]
Nonaccrual loans with ACL	895	1,239
Nonaccrual loans without ACL	1,540	1,856
Total Nonaccrual loans	2,435	3,095
Consumer Portfolio Segment [Member]
Nonaccrual loans with ACL	0	0
Nonaccrual loans without ACL	0	0
Total Nonaccrual loans	$ 0	$ 0