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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill [Abstract]  
Schedule of changes in the carrying amount of goodwill
   IT
professional
services		   Software
services		   Total 
As of January 1, 2020  $60,346   $57,397   $117,743 
                
Business combinations   5,832    5,718    11,550 
Measurement period adjustments   1,443    618    2,061 
Foreign currency translation adjustments   1,725    2,603    4,328 
                
As of December 31, 2020  $69,346   $66,336   $135,682 
                
Business combinations   5,068    3,477    8,545 
Measurement period adjustments   321    558    879 
Foreign currency translation adjustments   868    829    1,697 
                
As of December 31, 2021  $75,603    71,200    146,803