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Note 4 - Goodwill (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2023
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Goodwill   $ 30,966,000   $ 55,111,000
Goodwill, Period Increase (Decrease)   (24,145,000)    
Goodwill, Impairment Loss   25,700,000 $ 55,400,000  
Goodwill, Acquired During Period   1,555,000    
Fluent [Member]        
Goodwill $ 51,614,000 $ 27,469    
Goodwill, Impairment Loss $ 25,700,000      
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount 20.00% 5.00%