Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 19,617	$ 28,756	$ 27,678
Charged to Expenses	9,464	4,200	9,868
Deductions	(6,827)	(7,906)	(8,687)
Translation Adjustments	(724)	(120)	(103)
Balance at End of Period	21,530	19,617	28,756
Allowance for doubtful accounts receivable | Cumulative Effect, Period of Adoption, Adjusted Balance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		23,443
Balance at End of Period			23,443
Deferred tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	24,132	21,618	23,072
Charged to Expenses	5,635	3,462	719
Deductions	(3,936)	(2,333)	(2,154)
Translation Adjustments	(1,633)	1,385	(19)
Balance at End of Period	$ 24,198	$ 24,132	$ 21,618