Note 22 - Leases - Balance Sheet, Income Statement, and Cash Flow Detail Regarding Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Operating lease right-of-use asset	$ 15,449		$ 15,449		$ 12,100
Operating lease liability	$ 16,938		$ 16,938		$ 13,476
Weighted average remaining lease term (years) (Year)	9 years 6 months		9 years 6 months		8 years 7 months 6 days
Weighted average discount rate	3.02%		3.02%		3.37%
One year or less	$ 654		$ 654		$ 2,087
Year two	2,634		2,634		2,107
Year three	2,673		2,673		2,141
Year four	2,408		2,408		1,899
Year five	1,924		1,924		1,469
Greater than five years	9,308		9,308		5,882
Total lease payments	19,601		19,601		15,585
Less imputed interest	2,663		2,663		2,109
Total	16,938		16,938		$ 13,476
Operating lease cost	616	$ 468	1,623	$ 1,411
Variable lease cost	57	44	170	131
Less sublease income	9	0	36	38
Total lease cost	$ 664	$ 512	1,757	1,504
Cash paid for operating lease liabilities			$ 1,898	$ 1,186