Note 9 - Leases, Right-to-Use Assets and Related Liabilities - Future Minimum Payments Under Non-cancelable Operating Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
2022, financing leases	$ 4,397
2022, operating lease	881
2022, both	5,278
2023, financing leases	1,713
2023, operating lease	528
2023, both	2,241
2024, financing leases	1,729
2024, operating lease	305
2024, both	2,034
2025, financing leases	1,743
2025, operating lease	315
2025, both	2,058
2026, financing leases	1,759
2026, operating lease	324
2026, both	2,083
2026 and thereafter, financing leases	19,814
Thereafter, operating lease	706
Thereafter, both	20,520
Total, financing leases	31,155
Total, operating lease	3,059
Total, both	34,214
Less: Amounts representing present value discounts, financing leases	(9,945)
Less: Amounts representing present value discounts, operating lease	(385)
Less: Amounts representing present value discounts, both	(10,330)
Total lease liabilities, financing leases	21,210	$ 172
Total lease liabilities, operating leases	2,674	172
Less: current portion, financing leases	(3,413)	(10)
Less: current portion, operating lease	(772)	(172)
Finance lease liabilities (long-term)	17,797	162
Operating lease liabilities (long-term)	1,902	$ 0
Long-term portion, both	19,699
Accounts Payable, Accrued Liabilities and Other Noncurrent Liabilities [Member]
Total lease liabilities, financing leases	21,210
Total lease liabilities, operating leases	2,674
Total lease liabilities, both	23,884
Prepaid Expenses and Other Current Assets [Member]
Less: current portion, financing leases	(3,413)
Less: current portion, operating lease	(772)
Less: current portion, both	$ (4,185)