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Goodwill (Tables)
6 Months Ended
Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table sets forth the activity in goodwill from December 31, 2019, through June 30, 2020 (in thousands):
Goodwill
  
Temporary and consultant staffingPermanent placement staffingRisk consulting and internal audit services Total
Balance as of December 31, 2019
$134,210  $26,097  $50,057  $210,364  
Foreign currency translation adjustments(245) (66) (223) (534) 
Balance as of June 30, 2020
$133,965  $26,031  $49,834  $209,830