EQUITY METHOD INVESTMENTS - Assets and Liabilities associated with McEwen Copper and MSC (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
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)