CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Shares and Additional Paid-in Capital McEwen Copper	Common Shares and Additional Paid-in Capital	Accumulated Deficit	Non-controlling Interests McEwen Copper	Non-controlling Interests	McEwen Copper	Total
Balance at Dec. 31, 2021		$ 1,615,424	$ (1,240,260)		$ 14,777		$ 389,941
Balance (in shares) at Dec. 31, 2021		45,919
Increase (Decrease) in Shareholders' Equity
Stock-based compensation		$ 340					340
Exercise of warrants		4					4
Sale of flow-through shares (Note 13)		$ 10,320					10,320
Sale of flow-through shares (Note 13) (in shares)		1,450
Shares issued for debt refinancing		$ 500					500
Shares issued for debt refinancing (in shares)		59
Issuance of equity by subsidiary		$ 17,643			23,707		41,350
Share repurchase		(87)					(87)
Net income (loss) and comprehensive income (loss)			(81,075)		(5,019)		(86,094)
Balance at Dec. 31, 2022		$ 1,644,144	(1,321,335)		33,465		356,274
Balance (in shares) at Dec. 31, 2022		47,428
Increase (Decrease) in Shareholders' Equity
Stock-based compensation		$ 605					605
Stock-based compensation (in shares)		66
Restricted shares issued		$ 366					366
Restricted shares issued (in shares)		43
Sale of flow-through shares (Note 13)		$ 13,428					13,428
Sale of flow-through shares (Note 13) (in shares)		1,903
Shares issued for debt refinancing	$ 109,913			$ 75,477		$ 185,390
Net income (loss) and comprehensive income (loss)			55,299		$ (22,122)		33,177
McEwen Copper Inc. deconsolidation				$ (86,820)		$ (86,820)
Balance at Dec. 31, 2023		$ 1,768,456	(1,266,036)				502,420
Balance (in shares) at Dec. 31, 2023		49,440
Increase (Decrease) in Shareholders' Equity
Stock-based compensation		$ 3,244					3,244
Stock-based compensation (in shares)		241
Exercise of warrants		$ 9					9
Exercise of warrants (in shares)		1
Sale of flow-through shares (Note 13)		$ 14,374					14,374
Sale of flow-through shares (Note 13) (in shares)		1,533
Shares issued to acquire Timberline Resources Corporation (Note 13)		$ 17,706					17,706
Shares issued to acquire Timberline Resources Corporation (Note 13) (in shares)		1,839
Warrants assumed in acquisition of Timberline Resources Corporation (Note 13)		$ 913					913
Net income (loss) and comprehensive income (loss)			(43,691)				(43,691)
McEwen Copper Inc. deconsolidation							(86,800)
Balance at Dec. 31, 2024		$ 1,804,702	$ (1,309,727)				$ 494,975
Balance (in shares) at Dec. 31, 2024		53,054