v3.26.1
EQUITY METHOD INVESTMENTS (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 15, 2025
Dec. 09, 2025
Mar. 31, 2026
Dec. 31, 2025
Feb. 06, 2026
Dec. 14, 2025
EQUITY METHOD INVESTMENTS            
Difference in proportionate share of net assets     $ 199,100      
Dilution gain (loss)     (162)      
Initial carrying amount of the equity investment     450,006 $ 428,641    
Total assets     972,597 820,218    
Current assets     109,819 107,886    
Total liabilities     320,637 273,981    
Current liabilities     $ 96,667 63,809    
McEwen Copper Inc.            
EQUITY METHOD INVESTMENTS            
Subsidiary ownership interest (as a percent)     46.30%      
Difference in proportionate share of net assets     $ 29,200      
Initial carrying amount of the equity investment     $ 272,115 274,189    
Dilution gain       789    
Price per common share for each warrant         $ 40  
Paragon Advanced Labs Inc.            
EQUITY METHOD INVESTMENTS            
Subsidiary ownership interest (as a percent) 27.00% 27.32% 27.00%     27.30%
Number of shares acquired   8,742,880        
Number of shares exchanged   709,992        
Fair value of transaction   $ 13,700        
Closing share price   $ 19.35        
Difference in proportionate share of net assets   $ 12,500        
Dilution gain (loss) $ 200   $ (162)      
Initial carrying amount of the equity investment     13,241 13,719    
Paragon Advanced Labs Inc. | Shareholder            
EQUITY METHOD INVESTMENTS            
Number of warrants exercised 400,000          
McEwen Copper Inc.            
EQUITY METHOD INVESTMENTS            
Total assets     236,725 203,277    
Current assets     24,589 7,089    
Total liabilities     67,761 41,759    
Current liabilities     $ 17,667 11,365    
Paragon Advanced Labs Inc.            
EQUITY METHOD INVESTMENTS            
Total assets       35,622    
Current assets       6,328    
Total liabilities       33,050    
Current liabilities       $ 10,642