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Note 4 - Goodwill (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Sep. 01, 2020
Apr. 01, 2020
Goodwill, Ending Balance $ 166,180 $ 165,088    
Goodwill, Acquired During Period $ 1,092      
Winopoly, LLC [Member]        
Goodwill, Ending Balance       $ 1,131
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage 100.00%   100.00%