EQUITY METHOD INVESTMENTS - Summary of the operating results of McEwen Copper (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Equity Investments
Advanced projects	$ (2,990)	$ (1,275)	$ (5,444)	$ (2,954)
Foreign exchange income (loss)	485	24,472	394	35,113
Interest and other income	(1,734)	19,577	(2,604)	28,041
Loss before tax	15,371	45,310	38,311	82,256
Net income (loss)	12,995	21,627	33,378	64,703
Net income (loss) on investment in McEwen Copper	(12,115)	$ (914)	$ (28,849)	$ (4,375)
McEwen Copper Inc.
Equity Investments
Subsidiary (as a percent)			100.00%
Advanced projects	(37,547)		$ (85,730)
Other expenses	(1,835)		(3,851)
Foreign exchange income (loss)	310		(3,682)
Interest and other income	3,841		20,295
Loss before tax	(35,231)		(72,968)
Net income (loss)	$ (35,231)		$ (72,968)
Subsidiary ownership interest (as a percent)	47.70%		47.70%
Net income (loss) on investment in McEwen Copper	$ (16,816)		$ (34,828)