SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - Allowance for doubtful accounts - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
Balance at beginning of period	$ 2,605	$ 967	$ 513
Additions charged to income	181	3,431	575
Accounts receivable written off	(10)	(1,429)	(36)
Currency and Other Adjustments	(3)	(364)	(85)
Balance at end of period	$ 2,773	2,605	$ 967
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
Additions charged to income		$ 50