EQUITY INVESTMENTS - A summary of the operating results of McEwen Copper (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Equity Investments
Advanced projects	$ (2,454)	$ (33,560)
Foreign exchange loss	(91)	10,641
Interest and other income	(870)	8,464
Loss before tax	22,940	36,946
Net income (loss)	20,383	43,076
Net income (loss) on investment in McEwen Copper	$ (16,734)	$ (3,461)
McEwen Copper Inc.
Equity Investments
Subsidiary (as a percent)	100.00%
Advanced projects	$ (48,183)
Other expenses	(2,016)
Foreign exchange loss	(3,992)
Interest and other income	16,454
Loss before tax	(37,737)
Net income (loss)	$ (37,737)
Subsidiary ownership interest (as a percent)	47.70%
Net income (loss) on investment in McEwen Copper	$ (18,012)