Note 8 - Long-term Leases - Maturity of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
2023, finance leases	$ 5,200
2023, operating leases	35,950
2024, finance leases	2,167
2024, operating leases	34,353
2025, finance leases	0
2025, operating leases	33,278
2026, finance leases	0
2026, operating leases	32,613
2027, finance leases	0
2027, operating leases	8,148
Thereafter, finance leases	0
Thereafter, operating leases	0
Total minimum lease payments, finance leases	7,367
Total minimum lease payments, operating leases	144,342
Less: amounts representing interest, finance leases	(322)
Less: amounts representing interest, operating leases	(17,843)
Present value of future minimum lease payments, finance leases	7,045
Present value of future minimum lease payments, operating leases	126,499
Less: current portion, finance leases	(4,911)	$ (4,695)
Less: current portion, operating leases	(28,611)	(27,574)
Noncurrent lease liabilities, finance leases	2,134	5,845
Noncurrent lease liabilities, operating leases	$ 97,888	$ 128,542