INVENTORIES (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials and supplies, including spare parts | $ 78,075 | $ 56,491 |
| Mined ore stockpiles | 20,381 | 23,795 |
| Work in process | 49,351 | 51,652 |
| Finished goods | 28,332 | 39,622 |
| Total current inventories | 176,139 | 171,560 |
| Add: Non-current portion | 117,032 | 80,539 |
| Total inventories | 293,171 | 252,099 |
| Noncurrent mined ore stockpiles | 32,200 | 24,100 |
| Noncurrent concentrate stockpiles | $ 51,600 | $ 31,700 |
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- Definition Inventory, Bastnaesite Concentrate Stockpiles, Non-current No definition available.
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- Definition Inventory, Mined Ore Stockpiles, Net of Reserves, Current No definition available.
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- Definition Inventory, Mined Ore Stockpiles, Net of Reserves, Non-current No definition available.
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- Definition Total Current and Non-Current Inventories No definition available.
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- References No definition available.
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- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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