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Capitalized Software Development Costs, Net (Tables)
6 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]  
Schedule of changes in capitalized software development costs
   Year ended December 31,   Six months ended
June 30,
 
   2019   2020 
       Unaudited 
         
Balance at the beginning of the year  $22,434   $23,953 
           
Capitalization   5,665    2,688 
Amortization   (5,668)   (3,027)
Functional currency translation adjustments   1,522    (71) 
           
Balance at year end  $23,953   $23,543