Note 14 - Leases - Operating Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating lease cost	$ 2,086	$ 1,890	$ 5,920	$ 4,920
Sublease income	0	(80)	0	(241)
Total lease cost	2,086	1,810	5,920	4,679
Operating cash flows from operating leases	1,893	1,706	5,432	3,755
New operating lease liability obligation	$ 5,121	$ 101	$ 5,310	$ 72,457