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Note 5 - Fair Value Measurements (Details Textual) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Other Accrued Liabilities [Member]    
Business Combination, Contingent Consideration, Liability, Total $ 64,324 $ 68,665
Other Long-term Liabilities [Member]    
Business Combination, Contingent Consideration, Liability, Total 75,139 $ 78,094
Fair Value, Inputs, Level 2 [Member]    
Debt Instrument, Fair Value Disclosure, Total 778,050  
Term Loan [Member]    
Long-term Debt, Total $ 768,682