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Derivative financial instruments - Summary of derivative liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial liabilities [line items]    
Total liabilities $ 61,330 $ 19,122
Current 25,587 279
Non-current 35,743 18,843
Foreign currency collars    
Disclosure of financial liabilities [line items]    
Total liabilities 194 0
Euro forward contracts    
Disclosure of financial liabilities [line items]    
Total liabilities 2,353 35
Gold collars    
Disclosure of financial liabilities [line items]    
Total liabilities 20,465 3,026
Gold commodity swaps    
Disclosure of financial liabilities [line items]    
Total liabilities 18,149 2,966
Copper commodity swaps    
Disclosure of financial liabilities [line items]    
Total liabilities 3,165 1,032
Interest rate swaps    
Disclosure of financial liabilities [line items]    
Total liabilities 12,167 12,063
Foreign currency forward contracts    
Disclosure of financial liabilities [line items]    
Total liabilities $ 4,837 $ 0