ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of Changes in Accumulated Other Comprehensive Loss Included Within Shareholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period			$ 214,603
Other comprehensive income (loss)	$ (3,084)	$ 2,570	(2,210)	$ (3,605)
Tax Provision	691	(60)	536	74
Other comprehensive income (loss), net of tax			(1,674)	(3,531)
Balance, end of period	75,437		75,437
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period			(27,678)	(30,190)
Balance, end of period	(29,352)	(33,721)	(29,352)	(33,721)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period			(23,045)	(26,742)
Other comprehensive income (loss)			(2,210)	(2,978)
Tax Provision			536	(81)
Balance, end of period	(25,255)	(29,720)	(25,255)	(29,720)
Foreign Currency Hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period			2,988	4,186
Other comprehensive income (loss)			0	(627)
Tax Provision			0	155
Balance, end of period	2,988	3,559	2,988	3,559
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period			(8,021)	(8,021)
Other comprehensive income (loss)			0	0
Balance, end of period	(8,021)	(8,021)	(8,021)	(8,021)
Tax Provision
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period			400	387
Tax Provision			536	74
Balance, end of period	$ 936	$ 461	$ 936	$ 461