SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Valuation accounts deducted from assets to which they apply – allowance for doubtful accounts:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 5,638	$ 5,109	$ 2,777
Charged to Costs and Expenses	2,037	6,222
Removal of Uncollectible Receivables	(1,482)	(3,907)
Translation Adjustments Increase (Decrease)	(26)	17
Balance at the End of Period	5,638	5,109
Valuation accounts deducted from assets to which they apply – valuation allowance for deferred income taxes:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	5,825	5,551	$ 2,945
Charged to Costs and Expenses	(15)	2,606
Other	289	0
Translation Adjustments Increase (Decrease)	0	0
Balance at the End of Period	$ 5,825	$ 5,551