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Property, plant, equipment and development costs - Net assets for right in use (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, plant, equipment and development costs      
Book value of assets held under finance leases $ 231,600 $ 250,500  
Acquisitions of assets under lease agreements 0 0  
Impairment recovery (loss) of long-lived assets   19,874 $ (14,910)
Capitalized finance costs 0 0 0
Right-of-use assets 11,756 12,760  
Additions to right-of-use assets 1,900 11,700  
Disposal of right of use assets 0 0  
Write-off of stripping activity asset 0 0 6,763
Buildings and other constructions      
Property, plant, equipment and development costs      
Right-of-use assets 9,236 10,484  
Transportation units      
Property, plant, equipment and development costs      
Right-of-use assets 1,117 1,380  
Machinery and equipment [Member]      
Property, plant, equipment and development costs      
Right-of-use assets $ 1,403 896  
Impairment Of Long Lived Asset [Member] | Rio Seco      
Property, plant, equipment and development costs      
Impairment recovery (loss) of long-lived assets   $ 19,900  
Impairment loss     19,900
Impairment Of Long Lived Asset [Member] | La Zanja      
Property, plant, equipment and development costs      
Return of provision for loss of value of inventories for sale of the Mallay unit     5,000
Reversal of impairment loss recognised in profit or loss, property, plant and equipment     $ 14,900