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Subsidiaries with material non-controlling interest (Details) - USD ($)
$ in Thousands
 12 Months Ended 36 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2021
Accumulated balances of material non-controlling interest:        
Non-controlling interests $ 170,205 $ 172,397 $ 196,678 $ 170,205
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests 1,271 (14,621) (16,251)  
Sociedad Minera El Brocal S.A.A        
Accumulated balances of material non-controlling interest:        
Non-controlling interests 148,792 144,501   148,792
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests 4,322 (12,895) (13,432)  
Minera La Zanja S.R.L. [Member]        
Accumulated balances of material non-controlling interest:        
Non-controlling interests 20,064 26,121   20,064
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests (7,385) (6,905) (9,090)  
S.M.R.L. Chaupiloma Dos de Cajamarca        
Accumulated balances of material non-controlling interest:        
Non-controlling interests 1,284 1,648   1,284
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests 4,396 5,201 6,286  
Apu Coropuna S.R.L. [Member]        
Accumulated balances of material non-controlling interest:        
Non-controlling interests 65 127   $ 65
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests (62) (22) (14)  
Other minor subsidiaries [Member]        
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests 0 0 (1)  
Country of domicile [member] | Sociedad Minera El Brocal S.A.A        
Equity interest held by non-controlling interests:        
Proportion of ownership interests held by non-controlling interests       38.57%
Accumulated balances of material non-controlling interest:        
Non-controlling interests 148,792 144,501 161,917 $ 148,792
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests 4,322 (12,895) (13,432)  
Country of domicile [member] | Minera La Zanja S.R.L. [Member]        
Equity interest held by non-controlling interests:        
Proportion of ownership interests held by non-controlling interests       46.94%
Accumulated balances of material non-controlling interest:        
Non-controlling interests 20,064 26,121 33,026 $ 20,064
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests (7,385) (6,905) (9,090)  
Country of domicile [member] | S.M.R.L. Chaupiloma Dos de Cajamarca        
Equity interest held by non-controlling interests:        
Proportion of ownership interests held by non-controlling interests       40.00%
Accumulated balances of material non-controlling interest:        
Non-controlling interests 1,284 1,648 1,587 $ 1,284
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests 4,396 5,201 6,286  
Country of domicile [member] | Apu Coropuna S.R.L. [Member]        
Equity interest held by non-controlling interests:        
Proportion of ownership interests held by non-controlling interests       30.00%
Accumulated balances of material non-controlling interest:        
Non-controlling interests 65 127 148 $ 65
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests (62) (22) (14)  
Country of domicile [member] | Other minor subsidiaries [Member]        
Profit (loss) allocated to material non-controlling interest:        
Profit (loss), attributable to non-controlling interests $ 0 $ 0 $ (1)