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Note 4 - Goodwill (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Mar. 31, 2023
Sep. 30, 2023
Sep. 30, 2022
Jun. 30, 2023
Dec. 31, 2022
Goodwill $ 1,261   $ 1,261     $ 55,111
Goodwill, Period Increase (Decrease)     (53,850)      
Goodwill, Impairment Loss 2,236   55,405 $ 55,400    
Goodwill, Acquired During Period     1,555      
Fluent [Member]            
Goodwill $ 27,469 $ 51,614 $ 27,469      
Goodwill, Impairment Loss   $ 25,700        
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount 32.00% 20.00% 32.00%   5.00%  
All Other Reporting Unit [Member]            
Goodwill $ 3,497   $ 3,497   $ 27,469  
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount 29.00%   29.00%