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Note 5 - Fair Value of Financial Instruments - Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Present value of non-competition payments $ 6,500  
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Accrued contingent consideration (earn-out) 13,334 $ 13,096
Present value of non-competition payments $ (6,484) $ (8,474)