Acquisitions and Divestitures - Reconciliation of Changes in Contingent Earn-Out Obligations (Details) - Series of individually immaterial business acquisitions - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Beginning balance	$ 30,248	$ 24,586
Acquisitions	14,854	14,042	$ 23,536
Foreign currency translation	(1,674)	(3,688)
Fair value remeasurements	(1,292)	(2,630)
Payments or other settlements	(8,536)	(2,062)
Ending balance	$ 33,600	$ 30,248	$ 24,586