v3.26.1
COMMITMENTS AND CONTINGENCIES - Reclamation obligations (Details) - Surety Bonds
$ in Millions, $ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2026
CAD ($)
Dec. 31, 2025
USD ($)
Reclamation Bonds      
Percentage of annual fees on surety bonds 2.40% 2.40%  
Percentage of required deposit on value of surety bonds 7.20% 7.20%  
Restricted cash $ 4.4   $ 4.2
Nevada      
Reclamation Bonds      
Surety bonding obligation 35.8    
Canada      
Reclamation Bonds      
Surety bonding obligation $ 13.6 $ 18.9