Note 9 - Leases - Lease Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Amortization of right-of-use assets	$ 3,620	$ 4,080
Interest on lease liabilities	637	1,003
Operating lease cost	24,002	21,212
Variable lease cost	89	414
Total lease cost	28,348	26,709
Operating cash flows from finance leases	637	1,003
Operating cash flows from operating leases	18,996	24,325
Financing cash flows from finance leases	5,626	20,083
Right-of-use assets obtained in exchange for new finance lease liabilities	0	3,229
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 15,795	$ 1,730
Weighted-average remaining lease term—finance leases (Year)	1 year	1 year 9 months 18 days
Weighted-average remaining lease term—operating leases (Year)	4 years 10 months 24 days	2 years 3 months 18 days
Weighted-average discount rate—finance leases	4.70%	2.30%
Weighted-average discount rate—operating leases	6.40%	5.30%