v3.26.1
OPERATING SEGMENT REPORTING - Reportable Operating Segments (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Operating Segment Reporting      
Revenue from gold and silver sales $ 74,049 $ 35,696  
Depreciation and depletion (6,910) (6,021)  
Gross profit 31,495 10,070  
Exploration (5,459) (3,681)  
Income (loss) from equity method investments $ 30,338 $ (8,068)  
Segment Reporting, Other Segment Item, Composition, Description Other segment items include Other segment items include  
General and administrative $ (9,464) $ (3,369)  
Depreciation (167) (150)  
Other income (6,338) 1,577 $ (231)
Income (loss) before income and mining taxes $ 33,205 (7,349)  
Number Of Reportable Segments Not Disclosed Flag true    
Paragon Advanced Labs Inc.      
Operating Segment Reporting      
Revenue from gold and silver sales     $ 312
Subsidiary (as a percent) 100.00%   100.00%
Operating segment      
Operating Segment Reporting      
Revenue from gold and silver sales $ 74,049 35,696  
Production costs applicable to sales (35,644) (19,605)  
Depreciation and depletion (6,910) (6,021)  
Gross profit 31,495 10,070  
Advanced projects (4,779) (1,684)  
Exploration (5,459) (3,681)  
Income (loss) from equity method investments 30,678 (8,068)  
Other segment items (4,324) (1,696)  
Segment profit (loss) 47,611 (5,059)  
Capital expenditures 16,885 14,534  
Corporate non segment      
Operating Segment Reporting      
Income (loss) from equity method investments (501)    
General and administrative (5,602) (2,411)  
Depreciation (113) (110)  
Interest and other finance expenses, net (1,590) (1,309)  
Other income (6,600) 1,540  
Income (loss) before income and mining taxes $ 33,205 (7,349)  
McEwen Copper and MSC reportable segments in aggregate      
Operating Segment Reporting      
Subsidiary (as a percent) 100.00%    
Gold Bar Mine Complex | Operating segment      
Operating Segment Reporting      
Revenue from gold and silver sales $ 37,717 22,391  
Production costs applicable to sales (19,379) (9,094)  
Depreciation and depletion (2,312) (1,178)  
Gross profit 16,026 12,119  
Exploration (3,140) (1,421)  
Other segment items (2,135) (418)  
Segment profit (loss) 10,751 10,280  
Capital expenditures 2,075 8,263  
Fox Complex | Operating segment      
Operating Segment Reporting      
Revenue from gold and silver sales 25,316 13,305  
Production costs applicable to sales (14,711) (10,511)  
Depreciation and depletion (4,598) (4,843)  
Gross profit 6,007 (2,049)  
Advanced projects (1,126)    
Exploration (1,385) (2,260)  
Other segment items (2,026) (347)  
Segment profit (loss) 1,470 (4,656)  
Capital expenditures 14,711 6,254  
Tartan Lake | Operating segment      
Operating Segment Reporting      
Exploration (934)    
Other segment items (76)    
Segment profit (loss) (1,010)    
El Gallo | Operating segment      
Operating Segment Reporting      
Revenue from gold and silver sales 11,016    
Production costs applicable to sales (1,554)    
Gross profit 9,462    
Advanced projects (3,653) (1,684)  
Other segment items (87) (931)  
Segment profit (loss) 5,722 (2,615)  
Capital expenditures 99 17  
MSC | Operating segment      
Operating Segment Reporting      
Income (loss) from equity method investments 32,752 510  
Segment profit (loss) 32,752 510  
McEwen Copper | Operating segment      
Operating Segment Reporting      
Income (loss) from equity method investments (2,074) (8,578)  
Segment profit (loss) $ (2,074) $ (8,578)