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Note 3 - Intangible Assets, Net (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Apr. 01, 2020
Dec. 31, 2019
Amortization of Intangible Assets, Total $ 3,659 $ 3,127 $ 7,206 $ 6,252    
Finite-Lived Intangible Assets, Gross, Total 108,419   108,419     $ 105,721
Software Developed for Internal Use, Not Commenced Amortization [Member]            
Finite-Lived Intangible Assets, Gross, Total $ 633   $ 633      
Winopoly, LLC [Member]            
Business Acquisition, Percentage of Voting Interests Acquired         50.00%