Summary of Significant Accounting Policies - Schedule of Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 19,617	$ 23,443
Charges to expense	7,262	4,200
Deductions	(5,541)	(7,906)
Other, including translation adjustments	(695)	(120)
Ending balance	$ 20,643	$ 19,617