PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	$ 432,248	$ 408,219
Less: accumulated depreciation	180,103	170,702
Property, plant and equipment, net	252,145	237,517
Land
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	11,273	11,692
Building
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	91,140	89,602
Equipment
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	263,929	253,995
Construction in progress
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	$ 65,906	$ 52,930