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Note 4 - Goodwill (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Goodwill $ 33,354   $ 55,111
Goodwill, Period Increase (Decrease) (25,700)    
Goodwill, Acquired During Period 3,943    
Goodwill, Impairment Loss 25,700 $ 0  
Fluent [Member]      
Goodwill $ 51,614    
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount 20.00%    
Goodwill, Impairment Loss $ 25,700