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Derivative financial instruments - Summary of derivative liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Disclosure of financial liabilities [line items]    
Total derivative liabilities $ 19,122 $ 0
Current 279 0
Non-current 18,843 0
Euro forward contracts    
Disclosure of financial liabilities [line items]    
Total derivative liabilities 35 0
Gold collars    
Disclosure of financial liabilities [line items]    
Total derivative liabilities 3,026 0
Gold commodity swaps    
Disclosure of financial liabilities [line items]    
Total derivative liabilities 2,966 0
Copper commodity swaps    
Disclosure of financial liabilities [line items]    
Total derivative liabilities 1,032 0
Interest rate swaps    
Disclosure of financial liabilities [line items]    
Total derivative liabilities $ 12,063 $ 0