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Commitments and contingencies - Income tax declaration for 2014 (Details)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
PEN (S/)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
PEN (S/)
Dec. 28, 2022
USD ($)
Dec. 28, 2022
PEN (S/)
Nov. 30, 2022
USD ($)
Nov. 30, 2022
PEN (S/)
Mar. 15, 2021
USD ($)
Mar. 15, 2021
PEN (S/)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
PEN (S/)
Disclosure of Commitments and contingencies [Line Items]                        
Contingent liability $ 10,337,000 S/ 38,381,000 $ 11,139,000 S/ 41,358,000                
Judicial process related to contractor bonuses [Member]                        
Disclosure of Commitments and contingencies [Line Items]                        
Contingent liability 1,265,000 4,695,000                    
SUNAT.                        
Disclosure of Commitments and contingencies [Line Items]                        
Declared tax deductions not recognized             $ 4,476,000 S/ 16,618,000        
Contingent liability $ 2,828,000 S/ 10,500,000                    
SUNAT. | Open tax procedure                        
Disclosure of Commitments and contingencies [Line Items]                        
Declared tax deductions not recognized         $ 168,000 S/ 624,000     $ 37,499,000 S/ 139,235,000    
SUNAT. | Year 2014 [Member] | Open tax procedure                        
Disclosure of Commitments and contingencies [Line Items]                        
Declared tax deductions not recognized                     $ 25,558,000 S/ 94,898,000