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Goodwill (Tables)
9 Months Ended
Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill The following table sets forth the activity in goodwill from December 31, 2020 through September 30, 2021 (in thousands):
Goodwill
  
Temporary and consultant staffingPermanent placement staffingRisk consulting and internal audit services Total
Balance as of December 31, 2020
$134,511 $26,180 $62,364 $223,055 
Foreign currency translation adjustments106 16 (285)(163)
Balance as of September 30, 2021
$134,617 $26,196 $62,079 $222,892