Note 14 - Long-term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Total debt	$ 339,918	$ 338,800
Debt issuance costs and other	8,814	7,247
Long-term Debt, Current Maturities, Total	8,727	8,278
Long-term Debt, Excluding Current Maturities, Total	331,191	330,522
Convertible Debt [Member] | The 2.75% Convertible Notes [Member]
Total debt	207,354	200,303
Term Loan [Member] | The Credit Agreement [Member]
Total debt	123,750	131,250
Long-term Debt, Current Maturities, Total	7,500	7,500
Long-term Debt, Excluding Current Maturities, Total	$ 116,300	$ 123,800