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EQUITY METHOD INVESTMENTS - Assets and Liabilities associated with McEwen Copper and MSC (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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EQUITY METHOD INVESTMENTS |  |
Current assets | $ 41,192 | $ 52,661
Total assets | 664,623 | 657,239
Current liabilities | (47,693) | (30,003)
Total liabilities | (169,648) | (154,819)
Difference in proportionate share of net assets | 199,700 |
McEwen Copper |  |
EQUITY METHOD INVESTMENTS |  |
Difference in proportionate share of net assets | 31,600 |
McEwen Copper |  |
EQUITY METHOD INVESTMENTS |  |
Current assets | 34,067 | 104,195
Total assets | 226,329 | 281,353
Current liabilities | (14,656) | (23,988)
Total liabilities | (14,856) | (24,287)
Minera Santa Cruz S.A. |  |
EQUITY METHOD INVESTMENTS |  |
Current assets | 144,327 | 101,572
Total assets | 233,003 | 196,617
Current liabilities | (57,373) | (44,785)
Total liabilities | $ (89,594) | $ (77,742)

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