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Financial obligations (Details) - USD ($)
Dec. 31, 2021
Jul. 23, 2021
Jun. 27, 2021
Dec. 31, 2020
Dec. 31, 2019
Oct. 29, 2019
Dec. 31, 2018
Oct. 29, 2018
Jun. 27, 2016
Jun. 30, 2014
Disclosure of Financial obligations [Line Items]                    
Financial liabilities $ 1,057,975,000     $ 531,653,000 $ 571,688,000   $ 587,062,000      
Classification by maturity:                    
Total current debt 179,417,000     25,086,000            
Non-current portion (e) 878,558,000     506,567,000            
Lease liabilities 5,779,000     7,839,000            
Financial Liabilities $ 1,057,975,000     531,653,000 $ 571,688,000   $ 587,062,000      
Borrowings, interest rate 1.65%                  
Empresa de Generacin Huanza S.A                    
Disclosure of Financial obligations [Line Items]                    
Borrowings $ 112,784,000     111,820,000            
Sociedad Minera El Brocal S.A.A                    
Disclosure of Financial obligations [Line Items]                    
Borrowings 118,111,000     139,709,000            
Compaa de Minas Buenaventura S.A.A. [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 275,000,000 $ 550,000,000 $ 275,000,000 275,000,000         $ 275,000,000  
Debt issuance costs 6,284,000     2,715,000            
Borrowings 281,284,000     272,285,000            
Senior Notes at 5.50 Percent Due 2026 [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 550,000,000 $ 550,000,000                
Debt issuance costs 9,983,000                  
Borrowings $ 540,017,000                  
Classification by maturity:                    
Borrowings, interest rate 5.50% 5.50%                
Issue price (in percent)   99.14%                
BBVA Banco Continental S.A. [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount $ 66,667,000     66,667,000            
BBVA Banco Continental S.A. [Member] | Contacto Corredores de Seguros S.A. [Member]                    
Classification by maturity:                    
Lease liabilities 5,779,000     7,839,000            
CorpBanca New York Branch [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 61,666,000     61,666,000            
Banco Internacional del Peru [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 40,000,000     40,000,000            
ICBC Peru Bank [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 30,000,000     30,000,000            
Banco de Sabadell, Miami Branch [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 15,000,000     15,000,000            
Banco De Credito Del Peru - New Financial Obligation [Member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount           $ 161,893,850        
Banco De Credito Del Peru - New Financial Obligation [Member] | Sociedad Minera El Brocal S.A.A                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 118,722,000     140,309,000            
Debt issuance costs 611,000     600,000            
Banco de Credito del Peru [member]                    
Disclosure of Financial obligations [Line Items]                    
Notional amount 61,667,000     61,667,000       $ 119,000,000   $ 103,373,000
Banco de Credito del Peru [member] | Empresa de Generacin Huanza S.A                    
Disclosure of Financial obligations [Line Items]                    
Debt issuance costs 312,000     1,276,000            
Classification by maturity:                    
Finance Lease Liabilities IAS17 $ 113,096,000     $ 113,096,000