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Fair Value Measurements (Details) - Level 3 - Contingent Consideration - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward    
Beginning balance $ 1,640 $ 3,216
Acquisitions 0 200
Payments (938) (1,337)
Accretion of liability 0 33
Revaluation 1,034 153
Foreign currency translation 0 (23)
Ending balance $ 1,736 $ 2,242