ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Changes in accumulated other comprehensive income (loss) [Abstract]
Net foreign currency translation adjustment	$ (2,842)	$ (6,143)
Unrealized gain on cash flow hedge	2,084	677
Tax	(511)	(165)
Net of tax	1,573	512
Net change in postretirement benefit plan (see Note 14 for further information)
Amortization of prior service cost	2	18
Amortization of gain	0	(5)
Gain arising during the period and prior service credit	(32)	(4)
Total before tax	(30)	9
Tax	3	(2)
Net of tax and adjustment	(27)	7
Other comprehensive loss	(1,296)	(5,624)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax (expense) benefit on net investment hedge	(333)	(1,026)
Cross-currency swap
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net investment hedge (cross-currency swap), net of tax	$ 1,123	$ 3,197