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Note 3 - Intangible Assets, Net (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Sep. 01, 2020
Apr. 01, 2020
Amortization of Intangible Assets, Total $ 3,006 $ 3,711 $ 9,352 $ 10,917      
Finite-Lived Intangible Assets, Gross, Total 111,601   111,601   $ 109,958    
Software Developed for Internal Use, Not Commenced Amortization [Member]              
Finite-Lived Intangible Assets, Gross, Total $ 592   $ 592        
Winopoly, LLC [Member]              
Business Acquisition, Percentage of Voting Interests Acquired             50.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, including Subsequent Acquisition, Percentage, Total           100.00%