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Administrative expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | $ 67,185 | $ 76,297 | $ 77,099
Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 1,227 | 1,744 | 2,783
Management expenses [Member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 874 | 1,341 | 1,317
Others [Member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 353 | 403 | 1,466
Personnel expenses [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 34,500 | 38,566 | 34,656
Professional fees [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 10,517 | 13,924 | 15,324
Sundry charges [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 7,766 | 7,489 | 3,965
Board of Directors' participation [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 2,178 | 2,202 | 3,252
Software licenses [member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 1,731 | 1,706 | 1,824
Subscriptions and quotes [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 1,405 | 1,492 | 1,938
Donations [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 708 | 1,030 | 1,617
Short-term and low-value lease [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 611 | 1,011 | 5,818
Maintenance and repairs [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 579 | 953 | 2,732
Communications [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 973 | 1,296 | 1,512
Depreciation and amortization [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 3,700 | 3,825 | 1,295
Transport [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 255 | 878 | 1,212
Insurance [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 1,272 | 720 | 645
Travel and mobility [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 153 | 373 | 467
Consumption of materials and supplies [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 393 | 422 | 436
Canons and tributes [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | 318 | $ 410 | 388
Allowance for doubtful accounts [Member] |  |  |
Disclosure of administrative expense [Line Items] |  |  |
Administrative expenses. | $ 126 |  | $ 18

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