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OPERATING SEGMENT REPORTING - Summary of Reportable Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 58,680 | $ 38,404 | $ 34,395 | $ 34,752 | $ 28,240 | $ 25,988 | $ 30,647 | $ 25,542 | $ 166,231 | $ 110,417 | $ 136,541
Depreciation and depletion |  |  |  |  |  |  |  |  | (29,221) | (19,701) | (23,798)
Gross profit (loss) | $ 13,050 | $ 3,755 | $ (3,468) | $ 4,443 | $ (288) | $ 1,503 | $ 4,235 | $ (5,994) | 17,780 | (544) | (6,480)
Advanced projects |  |  |  |  |  |  |  |  | (82,637) | (66,728) | (12,439)
Income (Loss) from equity investments |  |  |  |  |  |  |  |  | (57,759) | 2,776 | (7,533)
Segment income (loss) |  |  |  |  |  |  |  |  | (142,783) | (79,469) | (49,056)
Gain on Deconsolidation of McEwen Copper |  |  |  |  |  |  |  |  | 222,157 |  |
General and Administrative and other |  |  |  |  |  |  |  |  | (12,338) | (819) | (15,143)
Loss before income and mining taxes |  |  |  |  |  |  |  |  | 67,036 | (80,288) | (64,199)
Capital expenditures |  |  |  |  |  |  |  |  | 26,198 | 26,234 | 36,033
USA |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Depreciation and depletion |  |  |  |  |  |  |  |  | (7,130) | (4,737) | (8,502)
Gross profit (loss) |  |  |  |  |  |  |  |  | 8,944 | (311) | (3,287)
Advanced projects |  |  |  |  |  |  |  |  |  | (52) | (440)
Segment income (loss) |  |  |  |  |  |  |  |  | 2,719 | (5,191) | (9,602)
Capital expenditures |  |  |  |  |  |  |  |  | 9,028 | 5,374 | 2,416
Canada |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Depreciation and depletion |  |  |  |  |  |  |  |  | (22,091) | (14,964) | (15,296)
Gross profit (loss) |  |  |  |  |  |  |  |  | 7,309 | 9,039 | 2,447
Advanced projects |  |  |  |  |  |  |  |  |  | (1,206) | (2,635)
Segment income (loss) |  |  |  |  |  |  |  |  | (6,247) | (1,610) | (15,205)
Capital expenditures |  |  |  |  |  |  |  |  | 9,131 | 15,317 | 33,617
Mexico |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Gross profit (loss) |  |  |  |  |  |  |  |  | 1,527 | (9,272) | (5,640)
Advanced projects |  |  |  |  |  |  |  |  | (6,292) | (4,322) | (4,345)
Segment income (loss) |  |  |  |  |  |  |  |  | (4,765) | (13,596) | (9,999)
Capital expenditures |  |  |  |  |  |  |  |  | 1,258 | 2,800 |
MSC |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Income (Loss) from equity investments |  |  |  |  |  |  |  |  | 62 | 2,776 | (7,533)
Segment income (loss) |  |  |  |  |  |  |  |  | 62 | 2,776 | (7,533)
McEwen Copper |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Advanced projects |  |  |  |  |  |  |  |  | (76,345) | (61,148) | (5,019)
Income (Loss) from equity investments |  |  |  |  |  |  |  |  | (57,821) |  |
Segment income (loss) |  |  |  |  |  |  |  |  | (134,552) | (61,848) | (6,717)
Capital expenditures |  |  |  |  |  |  |  |  | 6,781 | 2,743 |
Gold and silver sales |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 166,231 | 110,417 | 136,541
Gold and silver sales | USA |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 83,409 | 47,926 | 79,205
Gold and silver sales | Canada |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 81,295 | 60,848 | 50,704
Gold and silver sales | Mexico |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,527 | 1,643 | 6,632
Production costs applicable to sales |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  | (119,230) | (91,260) | (119,223)
Production costs applicable to sales | USA |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  | (67,335) | (43,500) | (73,990)
Production costs applicable to sales | Canada |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  | (51,895) | (36,845) | (32,961)
Production costs applicable to sales | Mexico |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  |  | (10,915) | (12,272)
Exploration |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  | (20,167) | (14,973) | (22,604)
Exploration | USA |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  | (6,225) | (4,828) | (5,875)
Exploration | Canada |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  | (13,556) | (9,443) | (15,017)
Exploration | Mexico |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  |  | (2) | (14)
Exploration | McEwen Copper |  |  |  |  |  |  |  |  |  |  |
Operating Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Production costs applicable to sales |  |  |  |  |  |  |  |  | $ (386) | $ (700) | $ (1,698)

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