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INVENTORIES - Schedule of Inventory, Current (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024
Inventory Disclosure [Abstract] |  |  |
Concentrates and work-in-progress | $ 46,432 | $ 46,432 | $ 42,366
Inventory of ore in stockpiles | 26,455 | 26,455 | 19,238
Raw materials and consumables | 3,609 | 3,609 | 4,900
Total inventories | 76,496 | 76,496 | $ 66,504
Inventory write-off | $ 1,310 | $ 1,310 |

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