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PROPERTY, PLANT AND EQUIPMENT - Net Book Value of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Total Property, Plant and Equipment | $ 15,203 | $ 20,337
Net property, plant and equipment | 8,996 | 8,995
Impairment expenses related to uranium assets | 5,200 |
Uranium And Lithium Operations |  |
Property, Plant and Equipment included in assets held for sale | 6,207 | 11,342
Discontinued operations. |  |
Impairment expenses related to uranium assets | 5,200 |
Texas |  |
Total Property, Plant and Equipment | 2,307 | 3,536
Texas | Uranium And Lithium Operations |  |
Property, Plant and Equipment included in assets held for sale | 2,307 | 3,536
Alabama |  |
Total Property, Plant and Equipment | 8,972 | 8,972
Net property, plant and equipment | 8,972 | 8,972
New Mexico |  |
Total Property, Plant and Equipment | 3,900 | 7,806
New Mexico | Uranium And Lithium Operations |  |
Property, Plant and Equipment included in assets held for sale | 3,900 | 7,806
Corporate |  |
Total Property, Plant and Equipment | 24 | 23
Net property, plant and equipment | 24 | 23
Texas and New Mexico |  |
Impairment expenses related to uranium assets | 5,200 |
Uranium plant |  |
Total Property, Plant and Equipment | 1,855 | 3,112
Uranium plant | Texas |  |
Total Property, Plant and Equipment | 1,855 | 3,112
Uranium plant | Alabama |  |
Total Property, Plant and Equipment | 0 |
Mineral rights and properties |  |
Total Property, Plant and Equipment | 12,872 | 16,778
Mineral rights and properties | Alabama |  |
Total Property, Plant and Equipment | 8,972 | 8,972
Mineral rights and properties | New Mexico |  |
Total Property, Plant and Equipment | 3,900 | 7,806
Other property, plant and equipment |  |
Total Property, Plant and Equipment | 476 | 447
Other property, plant and equipment | Texas |  |
Total Property, Plant and Equipment | 452 | 424
Other property, plant and equipment | Corporate |  |
Total Property, Plant and Equipment | $ 24 | $ 23

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