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EQUITY METHOD INVESTMENTS - A summary of the operating results of Minera Santa Cruz S.A. (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
EQUITY METHOD INVESTMENTS |  |  |  |  |  |  |  |  |  |  |
Revenue from gold and silver sales | $ 33,523 | $ 52,250 | $ 47,476 | $ 41,228 | $ 58,680 | $ 38,404 | $ 34,395 | $ 34,752 | $ 174,477 | $ 166,231 | $ 110,417
Depreciation and depletion |  |  |  |  |  |  |  |  | (30,229) | (29,221) | (19,701)
Income income before tax |  |  |  |  |  |  |  |  | (46,739) | 67,036 | (80,288)
Net Income (Loss) | $ (8,232) | $ (2,081) | $ (12,995) | $ (20,383) | $ 138,453 | $ (18,451) | $ (21,627) | $ (43,076) | (43,691) | 55,299 | (81,075)
Income tax recovery |  |  |  |  |  |  |  |  | $ 3,048 | $ (33,859) | $ (5,806)
Minera Santa Cruz S.A. |  |  |  |  |  |  |  |  |  |  |
EQUITY METHOD INVESTMENTS |  |  |  |  |  |  |  |  |  |  |
Subsidiary (as a percent) |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
Revenue from gold and silver sales |  |  |  |  |  |  |  |  | $ 310,411 | $ 254,926 | $ 254,698
Production costs applicable to sales |  |  |  |  |  |  |  |  | (215,065) | (177,234) | (182,195)
Depreciation and depletion |  |  |  |  |  |  |  |  | (51,188) | (58,935) | (32,200)
Gross profit |  |  |  |  |  |  |  |  | 44,158 | 18,757 | 40,303
Exploration |  |  |  |  |  |  |  |  | (11,257) | (9,346) | (8,946)
Other expense |  |  |  |  |  |  |  |  | (1,717) | (3,977) | (19,715)
Income income before tax |  |  |  |  |  |  |  |  | 31,184 | 5,434 | 11,642
Current and deferred tax |  |  |  |  |  |  |  |  | (6,548) | 3,051 | 1,221
Net Income (Loss) |  |  |  |  |  |  |  |  | 24,636 | 8,485 | 12,863
Net income (loss) |  |  |  |  |  |  |  |  | 12,072 | 4,157 | 6,303
Amortization of fair value increments |  |  |  |  |  |  |  |  | (3,088) | (4,612) | (4,155)
Income tax recovery |  |  |  |  |  |  |  |  | 37 | 517 | 628
Income from investment in MSC, net of amortization |  |  |  |  |  |  |  |  | $ 9,021 | $ 62 | $ 2,776

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