v3.26.1
Financial instruments - Price Risk (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
$ / Ounce
oz
Dec. 31, 2024
USD ($)
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Derivative average cap price (in usd per ounce) | $ / Ounce 4,350  
Financial liabilities, at fair value $ 601,100  
Unrealized gain (loss)   $ 200
Realized loss $ (5,900) (2,600)
Commodity price risk    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Reasonably possible change in risk variable (as a percent) 10.00%  
Commodity price risk | Commodity Contract    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Financial liabilities, at fair value $ 6,800 $ (100)
Commodity price risk | Gold | Commodity Contract    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Quantity (tonnes) | oz 5,000  
Derivate floor, price per ounce (in usd per ounce) | $ / Ounce 3,800  
Foreign exchange currency risk | Foreign exchange collar contracts    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Unrealized gain (loss) $ (4,700)