CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock and Additional Paid-in Capital McEwen Copper Inc.	Common Stock and Additional Paid-in Capital Goliath Resources Limited	Common Stock and Additional Paid-in Capital Paragon Advanced Labs Inc.	Common Stock and Additional Paid-in Capital	Accumulated Deficit	Non-controlling Interests McEwen Copper Inc.	Non-controlling Interests	McEwen Copper Inc.	Goliath Resources Limited	Paragon Advanced Labs Inc.	Total
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
Shares issued for debt refinancing (Note 11)	$ 109,913					$ 75,477		$ 185,390
Sale of flow-through shares (Note 13)				$ 13,428							13,428
Sale of flow-through shares (Note 13) (in shares)				1,903
Net income (loss) and comprehensive income (loss)					55,299		$ (22,122)				33,177
McEwen Copper Inc. deconsolidation (Note 9)						$ (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				$ 17,706							17,706
Shares issued to acquire Timberline Resources Corporation (in shares)				1,839
Warrants assumed in acquisition of Timberline Resources Corporation				$ 913							913
Net income (loss) and comprehensive income (loss)					(43,691)						(43,691)
Balance at Dec. 31, 2024				$ 1,804,702	(1,309,727)						494,975
Balance (in shares) at Dec. 31, 2024				53,054
Increase (Decrease) in Shareholders' Equity
Stock-based compensation				$ 7,251							7,251
Stock-based compensation (in shares)				533
Exercise of warrants				$ 610							610
Exercise of warrants (in shares)				85
Investments in equity interest		$ 6,068	$ 13,719						$ 6,068	$ 13,719
Investments in equity interest (in shares)		868	709
Purchase of capped call options (Note 11)				$ (15,114)							(15,114)
Shares issued for debt refinancing (Note 11)				$ 400							400
Shares issued for debt refinancing (Note 11) (in shares)				53
Sale of flow-through shares (Note 13)				$ 3,894							3,894
Sale of flow-through shares (Note 13) (in shares)				215
Net income (loss) and comprehensive income (loss)					34,434						34,434
McEwen Copper Inc. deconsolidation (Note 9)											(86,800)
Balance at Dec. 31, 2025				$ 1,821,530	$ (1,275,293)						$ 546,237
Balance (in shares) at Dec. 31, 2025				55,517