ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of Changes in Accumulated Other Comprehensive Loss Included Within Shareholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 214,603
Other comprehensive income (loss)	217	$ (9,476)
Tax Provision	102	(185)
Other comprehensive income (loss), net of tax	319	(9,661)
Balance, end of period	182,860
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(27,678)	(30,190)
Balance, end of period	(27,359)	(39,851)
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)	217	(9,741)
Tax Provision	102	(120)
Balance, end of period	(22,828)	(36,483)
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	265
Tax Provision	0	(65)
Balance, end of period	2,988	4,451
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)
Tax Provision
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	400	387
Tax Provision	102	(185)
Balance, end of period	$ 502	$ 202