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INVENTORIES - Components of Inventories (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Inventory [Line Items] |  |
Work-in-process | $ 13,541 | $ 7,189
Finished goods | 16,949 | 21,324
Total current inventories | 465,109 | 515,143
Total non-current inventories | 238,954 | 219,808
Materials and supplies |  |
Inventory [Line Items] |  |
Raw materials | 124,181 | 104,217
Total non-current inventories | 0 | 1,669
Stockpiled ore |  |
Inventory [Line Items] |  |
Raw materials | 57,317 | 77,142
Total non-current inventories | 238,954 | 218,139
Leach pad inventory |  |
Inventory [Line Items] |  |
Raw materials | $ 253,121 | $ 305,271

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