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Acquisitions and Divestitures - Reconciliation of Changes in Contingent Earn-Out Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Business Combinations [Abstract]    
Beginning balance $ 24,586 $ 2,608
Acquisitions 14,042 23,536
Foreign currency translation (3,688) (905)
Fair value remeasurements (2,630) 121
Payments or other settlements (2,062) (774)
Ending balance $ 30,248 $ 24,586