Note 15 - Leases - Operating Lease Related Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Right-of-use assets- operating leases	$ 32,076	$ 29,627
Lease liabilities - operating leases	$ 34,797	$ 32,518
Weighted-average remaining lease term (in years) (Year)	4 years 1 month 6 days	4 years
Weighted-average discount rate	3.80%	2.90%
Operating cash flows from operating leases	$ 11,400	$ 11,400
ROU assets obtained in exchange for lease obligations	$ 12,600	$ 5,900