CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents (Note 4)	$ 21,989	$ 23,020
Investments (Note 5)	1,569	1,743
Receivables, prepaids and other current assets (Note 6)	5,838	5,578
Due from McEwen Copper Inc. (Note 13)	$ 2,754	$ 2,376
Other Receivable, after Allowance for Credit Loss, Current, Related Party, Name [Extensible Enumeration]	McEwen Copper Inc. [Member]	McEwen Copper Inc. [Member]
Inventories (Note 7)	$ 19,871	$ 19,944
Total current assets	52,021	52,661
Mineral property interests and plant and equipment, net (Note 8)	167,149	169,950
Investment in McEwen Copper Inc. (Note 9)	308,135	326,147
Investment in Minera Santa Cruz S.A. (Note 9)	94,496	93,218
Inventories (Note 7)	11,814	10,100
Restricted cash (Note 4)	4,429	4,490
Other assets	672	673
TOTAL ASSETS	638,716	657,239
Current liabilities:
Accounts payable and accrued liabilities	24,732	22,656
Reclamation and remediation liabilities (Note 11)	4,235	3,105
Current portion of long-term debt (Note 10)	3,000
Contract liability (Note 15)	1,966
Flow-through share premium	1,103	1,661
Tax liabilities	1,979	1,603
Lease liabilities	894	978
Total current liabilities	37,909	30,003
Reclamation and remediation liabilities (Note 11 )	39,024	39,916
Long-term debt (Note 10)	37,000	40,000
Deferred tax liabilities	37,907	40,572
Other liabilities	3,562	3,840
Lease liabilities	806	488
Total liabilities	156,208	154,819
Shareholders' equity:
Common shares: 49,440 as of March 31, 2024 (in thousands)	1,768,927	1,768,456
Accumulated deficit	(1,286,419)	(1,266,036)
Total shareholders' equity	482,508	502,420
TOTAL LIABILITIES & SHAREHOLDERS' EQUITY	$ 638,716	$ 657,239