SCHEDULE II — VALUATION And QUALIFYING ACCOUNTS And RESERVES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowance release	$ 100	$ 100	$ 5,400
Allowance for Possible Losses on Collection of Accounts Receivable
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	2,320	1,938	5,504
Additions Charged (Reductions Credited) to Costs and Expenses	1,050	530	1,086
Deductions	(1,048)	(205)	(4,487)
Adjustment for Differences in Exchange Rates	(362)	57	(165)
Balance at End of Period	1,960	2,320	1,938
Valuation Allowance on Net Deferred Tax Assets
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	11,680	11,434	25,596
Additions Charged (Reductions Credited) to Costs and Expenses	4,753	215	0
Deductions	(1,325)	(84)	(13,978)
Adjustment for Differences in Exchange Rates	(1,622)	115	(184)
Balance at End of Period	$ 13,486	$ 11,680	$ 11,434