Note 5 - Loans and the Allowance for Credit Losses - Loans Receivable on Nonaccrual Status (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Nonaccrual loans with ACL	$ 23,159	$ 34,336
Nonaccrual loans without ACL	28,337	10,118
Total Nonaccrual loans	51,496	44,454
Commercial Portfolio Segment [Member]
Nonaccrual loans with ACL	18,829	23,512
Nonaccrual loans without ACL	5,824	1,745
Total Nonaccrual loans	24,653	25,257
Commercial Real Estate Portfolio Segment [Member]
Nonaccrual loans with ACL	3,346	10,220
Nonaccrual loans without ACL	20,183	6,597
Total Nonaccrual loans	23,529	16,817
Residential Portfolio Segment [Member]
Nonaccrual loans with ACL	984	604
Nonaccrual loans without ACL	2,330	1,776
Total Nonaccrual loans	$ 3,314	$ 2,380