SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 598	$ 434	$ 784
Net Expenses	86	164	(117)
Write-offs	0	0	(233)
Balance at End of Period	684	598	434
Inventory reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	8,968	8,923	8,951
Net Expenses	(1,700)	22	6
Foreign Currency	(137)	23	(34)
Balance at End of Period	$ 7,131	$ 8,968	$ 8,923