PROPERTY, PLANT AND EQUIPMENT - Net Book Value of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	$ 64,259	$ 14,479
Mineral rights and properties
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	8,972	8,972
Other property, plant and equipment
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	5,781	4,490
Construction in progress
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	49,506	1,017
Alabama
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	64,233	14,451
Alabama | Mineral rights and properties
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	8,972	8,972
Alabama | Other property, plant and equipment
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	5,755	4,462
Alabama | Construction in progress
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	49,506	1,017
Corporate
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	26	28
Corporate | Other property, plant and equipment
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	$ 26	$ 28