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Intangible Assets, Net (Tables)
 12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of intangible assets
   December 31, 
   2020   2019 
Original amounts:        
         
Capitalized software costs  $86,240   $82,878 
Customer relationships   78,750    70,032 
Backlog and non-compete agreement   2,712    2,712 
Acquired technology   18,052    15,867 
Other   616    
-
 
           
    186,370    171,489 
Accumulated amortization:          
           
Capitalized software costs   74,841    70,326 
Customer relationships   46,621    40,550 
Backlog and non-compete agreement   2,712    2,712 
Acquired technology   8,720    6,773 
Other   72    
-
 
           
    132,966    120,361 
           
Intangible assets, net  $53,404   $51,128 

 
Schedule of estimated future amortization expense of intangible assets
2021  $12,224 
2022   9,866 
2023   8,287 
2024   6,852 
2025   5,156 
2026 and thereafter   11,019 
      
   $53,404