Note 15 - Leases - Operating Lease Related Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Right-of-use assets- operating leases	$ 29,627	$ 27,834
Lease liabilities - operating leases	$ 32,518	$ 30,694
Weighted-average remaining lease term (in years) (Year)	4 years	4 years 4 months 24 days
Weighted-average discount rate	2.90%	2.61%
Operating cash flows from operating leases	$ 11,400	$ 9,900
ROU assets obtained in exchange for lease obligations	$ 5,900	$ 6,000