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Related parties - Transactions with related entities that affected results (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Expenses      
Supplies $ 57 $ 53 $ 55
Sociedad Minera Cerro Verde S.A.A.      
Revenues      
Reimbursement of expenses 747 65 226
Supplies 2 0 768
Total revenues 749 65 994
Expenses      
Reimbursement of information technology services 22,023 16,941 15,900
Commissions 10,550 8,484 7,801
Management fee 2,540 2,352 2,159
Stock-based compensation (a) 2,502 2,894 2,259
Supplies 7 0 492
Total expenses 37,622 30,671 28,611
Amounts of related payments/settlements 3,400 2,700 800
Other capital contributions $ 900 $ 200 $ 1,500