EQUITY INVESTMENTS - Assets and Liabilities Associated with McEwen Copper (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Current assets	$ 52,661	$ 81,652
Total assets	657,239	528,719
Current liabilities	(30,003)	(84,186)
Total liabilities	(154,819)	(172,445)
McEwen Copper Inc | Balance excluding FV increments
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Current assets	104,195
Total assets	281,353
Current liabilities	(23,988)
Total liabilities	(24,287)
McEwen Copper Inc | Adjustments
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Total assets	262,494
McEwen Copper Inc | Balance including FV increments
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Current assets	104,195
Total assets	543,847
Current liabilities	(23,988)
Total liabilities	(24,287)
Minera Santa Cruz S.A. | Balance excluding FV increments
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Current assets	101,572	98,956
Total assets	196,617	204,671
Current liabilities	(44,785)	(60,584)
Total liabilities	(77,742)	(82,185)
Minera Santa Cruz S.A. | Adjustments
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Current assets	937	1,103
Total assets	71,528	81,434
Total liabilities	(239)	(1,295)
Minera Santa Cruz S.A. | Balance including FV increments
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Current assets	102,509	100,059
Total assets	268,145	286,105
Current liabilities	(44,785)	(60,584)
Total liabilities	$ (77,981)	$ (83,480)