Note 9 - Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
2021, Operating	$ 18,543
2021, Finance	6,324
2022, Operating	15,523
2022, Finance	6,884
2023, Operating	6,762
2023, Finance	3,616
2024, Operating	28
2024, Finance	0
2025, Operating	9
2025, Finance	0
Thereafter, Operating	0
Thereafter, Finance	0
Total minimum lease payments, Operating	40,865
Total minimum lease payments, Finance	16,824
Less: amount representing interest, Operating	2,402
Less: amount representing interest, Finance	(381)
Present value of minimum lease payments, Operating	38,463
Present value of minimum lease payments, Finance	16,443
Less: current portion, Operating	(16,989)	$ (19,460)
Less: current portion, Finance	(5,687)	(7,258)
Lease obligations, long-term, Operating	21,474
Lease obligations, long-term, Finance	$ 10,756	$ 26,010