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REVENUE BY GEOGRAPHIC LOCATION (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenues | $ 78,114 | $ 37,928 | $ 12,515
Revenue from Contract with Customer, Excluding Assessed Tax | 78,114 | 37,928 | 12,515
Uranium | Customer 1 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 15,026 | 10,472 | 0
Uranium | Customer 3 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 8,590 | 0 | 0
Uranium | Customer 4 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 18,470 | 0
Uranium | Customer 5 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 4,335 | 0
Uranium | Customer 6 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 | 470
Uranium | Customer 7 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 866 | 8,778
Uranium | Customer 8 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 | 445
Heavy Mineral Sands | Customer 2 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 10,896 | 0 | 0
Rare Earth Elements | Customer 6 |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 2,848 | 2,122
UNITED STATES | Uranium |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 24,333 | 34,514 | 9,473
UNITED STATES | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 270 | 0 | 0
CHINA | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 17,303 | 0 | 0
JAPAN | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 12,409 | 0 | 0
NETHERLANDS | Uranium |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 5,275 | 0 | 0
NETHERLANDS | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 6,481 | 0 | 0
GERMANY | Uranium |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 8,590 | 0 | 0
SPAIN | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 1,245 | 0 | 0
KOREA, REPUBLIC OF | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 1,169 | 0 | 0
MEXICO | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 806 | 0 | 0
KENYA | Heavy Mineral Sands |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 191 | 0 | 0
ESTONIA | Uranium |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 | 470
ESTONIA | Rare Earth Elements |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 2,848 | 2,122
CANADA | Uranium |  |  |
Revenue from External Customers by Geographic Areas [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 42 | $ 566 | $ 450

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