ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 873,682	$ 877,015	$ 849,492	$ 828,233	$ 877,015	$ 828,233
Other comprehensive (loss)/income	(6,135)	(1,296)	1,883	(5,624)	(7,431)	(3,741)
Ending balance	901,370	873,682	869,642	849,492	901,370	869,642
Foreign currency translation adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(3,602)			(3,602)
Other comprehensive (loss)/income					(9,793)
Ending balance	(13,395)				(13,395)
Cash flow hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(1,631)			(1,631)
Other comprehensive (loss)/income					2,423
Ending balance	792				792
Postretirement benefit plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		240			240
Other comprehensive (loss)/income					(61)
Ending balance	179				179
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(6,289)	(4,993)	(1,451)	4,173	(4,993)	4,173
Other comprehensive (loss)/income	(6,135)	(1,296)	1,883	(5,624)
Ending balance	$ (12,424)	$ (6,289)	$ 432	$ (1,451)	$ (12,424)	$ 432