ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 51,867
Other comprehensive loss	346	$ 217
Tax Provision	0	102
Other comprehensive income (loss), net of tax	346	319
Balance, end of period	27,070
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(26,732)	(27,678)
Balance, end of period	(26,386)	(27,359)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(23,287)	(23,045)
Other comprehensive loss	346	217
Tax Provision	0	102
Balance, end of period	(22,940)	(22,828)
Foreign Currency Hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	0	2,988
Other comprehensive loss	0	0
Balance, end of period	0	2,988
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(3,277)	(8,021)
Other comprehensive loss	0	0
Balance, end of period	(3,277)	(8,021)
Tax Provision
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(169)	400
Tax Provision	0	102
Balance, end of period	$ (169)	$ 502