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PROPERTY, PLANT AND EQUIPMENT - Net Book Value of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Property, Plant and Equipment [Line Items] |  |
Total Property, Plant and Equipment | $ 90,078 | $ 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 | 5,769 | 4,490
Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Total Property, Plant and Equipment | 75,337 | 1,017
Alabama |  |
Property, Plant and Equipment [Line Items] |  |
Total Property, Plant and Equipment | 90,054 | 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 | 5,745 | 4,462
Alabama | Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Total Property, Plant and Equipment | 75,337 | 1,017
Corporate |  |
Property, Plant and Equipment [Line Items] |  |
Total Property, Plant and Equipment | 24 | 28
Corporate | Other property, plant and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Total Property, Plant and Equipment | $ 24 | $ 28

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