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OPERATING SEGMENT REPORTING - Reportable Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue from gold and silver sales | $ 33,523 | $ 52,250 | $ 47,476 | $ 41,228 | $ 58,680 | $ 38,404 | $ 34,395 | $ 34,752 | $ 174,477 | $ 166,231 | $ 110,417
Depreciation and depletion |  |  |  |  |  |  |  |  | (30,229) | (29,221) | (19,701)
Gross profit (loss) | $ 363 | $ 13,803 | $ 10,758 | $ 6,011 | $ 13,050 | $ 3,755 | $ (3,468) | $ 4,443 | 30,935 | 17,780 | (544)
Exploration |  |  |  |  |  |  |  |  | $ (16,546) | $ (20,167) | $ (14,973)
Segment Reporting, Other Segment Item, Composition, Description |  |  |  |  |  |  |  |  | Other segment items include: | Other segment items include: | Other segment items include:
Dilution gain from investments in McEwen Copper Inc. |  |  |  |  |  |  |  |  | $ 5,777 |  |
Gain on deconsolidation of McEwen Copper Inc. |  |  |  |  |  |  |  |  |  | $ 222,157 |
General and administrative |  |  |  |  |  |  |  |  | (17,165) | (15,449) | $ (11,890)
Depreciation |  |  |  |  |  |  |  |  | (634) | (1,138) | (733)
Interest and other finance expense |  |  |  |  |  |  |  |  | (3,033) | (5,598) | (6,497)
Other income (expense) |  |  |  |  |  |  |  |  | (2,651) | 29,976 | (22,938)
(Loss) income before income and mining taxes |  |  |  |  |  |  |  |  | (46,739) | 67,036 | (80,288)
Capital expenditures |  |  |  |  |  |  |  |  | 43,095 | 26,198 | 26,234
Operating segment |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue from gold and silver sales |  |  |  |  |  |  |  |  | 174,477 | 166,231 | 110,417
Production costs applicable to sales |  |  |  |  |  |  |  |  | (113,313) | (119,230) | (91,260)
Depreciation and depletion |  |  |  |  |  |  |  |  | (30,229) | (29,221) | (19,701)
Gross profit (loss) |  |  |  |  |  |  |  |  | 30,935 | 17,780 | (544)
Advanced projects |  |  |  |  |  |  |  |  | (7,152) | (82,637) | (66,728)
Exploration |  |  |  |  |  |  |  |  | (16,546) | (20,167) | (14,973)
Income (loss) from equity method investments |  |  |  |  |  |  |  |  | (37,956) | (57,759) | 2,776
Other segment items |  |  |  |  |  |  |  |  | (5,278) | 371 | 10,579
Segment profit (loss) |  |  |  |  |  |  |  |  | (35,997) | (142,412) | (68,890)
Corporate non segment |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
General and administrative |  |  |  |  |  |  |  |  | (13,303) | (7,335) | (4,111)
Depreciation |  |  |  |  |  |  |  |  | (475) | (510) | (497)
Other income (expense) |  |  |  |  |  |  |  |  | 292 | 734 | (293)
USA | Operating segment |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue from gold and silver sales |  |  |  |  |  |  |  |  | 105,147 | 83,409 | 47,926
Production costs applicable to sales |  |  |  |  |  |  |  |  | (63,547) | (67,335) | (43,500)
Depreciation and depletion |  |  |  |  |  |  |  |  | (12,657) | (7,130) | (4,737)
Gross profit (loss) |  |  |  |  |  |  |  |  | 28,943 | 8,944 | (311)
Advanced projects |  |  |  |  |  |  |  |  |  |  | (52)
Exploration |  |  |  |  |  |  |  |  | (8,420) | (6,225) | (4,828)
Other segment items |  |  |  |  |  |  |  |  | (1,968) | (1,891) | (1,823)
Segment profit (loss) |  |  |  |  |  |  |  |  | 18,555 | 828 | (7,014)
Capital expenditures |  |  |  |  |  |  |  |  | 17,789 | 9,028 | 5,374
Canada | Operating segment |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue from gold and silver sales |  |  |  |  |  |  |  |  | 67,808 | 81,295 | 60,848
Production costs applicable to sales |  |  |  |  |  |  |  |  | (49,766) | (51,895) | (36,845)
Depreciation and depletion |  |  |  |  |  |  |  |  | (17,572) | (22,091) | (14,964)
Gross profit (loss) |  |  |  |  |  |  |  |  | 470 | 7,309 | 9,039
Advanced projects |  |  |  |  |  |  |  |  |  |  | (1,206)
Exploration |  |  |  |  |  |  |  |  | (8,126) | (13,556) | (9,443)
Other segment items |  |  |  |  |  |  |  |  | 334 | (220) | (546)
Segment profit (loss) |  |  |  |  |  |  |  |  | (7,322) | (6,467) | (2,156)
Capital expenditures |  |  |  |  |  |  |  |  | 23,288 | 9,131 | 15,317
Mexico | Operating segment |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue from gold and silver sales |  |  |  |  |  |  |  |  | 1,522 | 1,527 | 1,643
Production costs applicable to sales |  |  |  |  |  |  |  |  |  |  | (10,915)
Gross profit (loss) |  |  |  |  |  |  |  |  | 1,522 | 1,527 | (9,272)
Advanced projects |  |  |  |  |  |  |  |  | (7,152) | (6,292) | (4,322)
Exploration |  |  |  |  |  |  |  |  |  |  | (2)
Other segment items |  |  |  |  |  |  |  |  | (3,644) | (5,002) | (1,513)
Segment profit (loss) |  |  |  |  |  |  |  |  | (9,274) | (9,767) | (15,109)
Capital expenditures |  |  |  |  |  |  |  |  | $ 2,018 | $ 1,258 | $ 2,800
MSC |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Subsidiary (as a percent) |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
MSC | Operating segment |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Income (loss) from equity method investments |  |  |  |  |  |  |  |  | $ 9,021 | $ 62 | $ 2,776
Segment profit (loss) |  |  |  |  |  |  |  |  | 9,021 | 62 | 2,776
McEwen Copper | Operating segment |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Advanced projects |  |  |  |  |  |  |  |  |  | (76,345) | (61,148)
Exploration |  |  |  |  |  |  |  |  |  | (386) | (700)
Income (loss) from equity method investments |  |  |  |  |  |  |  |  | (46,977) | (57,821) |
Other segment items |  |  |  |  |  |  |  |  |  | 7,484 | 14,461
Segment profit (loss) |  |  |  |  |  |  |  |  | $ (46,977) | (127,068) | (47,387)
Capital expenditures |  |  |  |  |  |  |  |  |  | $ 6,781 | $ 2,743

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