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PROPERTY, PLANT AND EQUIPMENT - Construction in Progress & Impairment of Property, Plant and Equipment (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Jun. 22, 2021
a
Property, Plant and Equipment [Line Items]      
Impairment $ 0 $ 0  
Construction in progress      
Property, Plant and Equipment [Line Items]      
Cash deposits   2,700  
Alabama Graphite      
Property, Plant and Equipment [Line Items]      
Acres of land under lease | a     70
Term of lease     10 years
Land grant   $ 1,400