PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	$ 474,525,000		$ 474,525,000		$ 460,838,000
Less: accumulated depreciation	205,691,000		205,691,000		189,483,000
Property, plant and equipment, net	268,834,000		268,834,000		271,355,000
Impairment charges	1,618,000	$ 0	7,764,000	$ 0
Land
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	11,535,000		11,535,000		11,415,000
Building
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	103,125,000		103,125,000		90,644,000
Equipment
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	306,222,000		306,222,000		278,851,000
Construction in progress
Property, Plant and Equipment [Abstract]
Gross property, plant and equipment	$ 53,643,000		$ 53,643,000		$ 79,928,000