Note 11 - Accounts Payable and Accrued Expenses - Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Trade payable	$ 75,164	$ 75,779
Salaries and other payroll costs	25,513	29,271
Customer advances	1,218	1,197
Accrued interest	11,283	7,843
Income tax payable	8,138	19,913
Property tax payable	2,906	1,378
Scheduling and transmission	3,632	2,632
Royalty accrual	6,023	3,581
Warranty accrual	1,579	2,087
Other	7,730	9,082
Total	$ 143,186	$ 152,763