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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands						3 Months Ended		6 Months Ended
	May 06, 2025	Apr. 28, 2025	Feb. 21, 2025	Jan. 31, 2025	Jun. 14, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Related Party Transactions
Outstanding loan						$ 125,772		$ 125,772		$ 40,000
Shares issued					1,533,000
Credit agreement
Related Party Transactions
Outstanding loan				$ 40,000
Extension term for repayment of debt				24 months
Amount of principal of debt repaid			$ 20,000
Shares issued	53,160
Debt instrument, shares issued	2.00%
Debt interest expense						$ 500	$ 900	$ 1,300	$ 1,900
Stated interest rate (as a percent)						9.75%	9.75%	9.75%	9.75%
Affiliate of Robert McEwen | Third amended loan agreement
Related Party Transactions
Outstanding loan						$ 40,000		$ 40,000
Debt interest expense						$ 500	$ 900	$ 1,100	$ 1,900
Stated interest rate (as a percent)						9.75%		9.75%
Affiliate of Robert McEwen | Credit agreement
Related Party Transactions
Outstanding loan				$ 40,000
Extension term for repayment of debt				24 months
Amount of principal of debt repaid				$ 20,000
Shares issued				53,160
Debt instrument, shares issued				2.00%
McEwen Copper
Related Party Transactions
Receivables from McEwen Copper Inc.						$ 7,242		$ 7,242		$ 286
Inventus Mining Corp.
Related Party Transactions
Number of warrants exercised		9,200,000
Number of warrants held		10,000,000

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