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Related parties (Schedule of Balances Outstanding and Transactions with Related Parties) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Related parties [Line Items] |  |  |
Amounts receivable, related party transactions | $ 4,680 | $ 2,236 |
Amounts payable, related party transactions | 0 | (3,528) |
Geological and geophysical expenses | 7,891 | 14,951 | $ 18,593
Administrative expenses | 46,828 | 50,315 | 60,818
Entities with joint control or significant influence over entity [member] |  |  |
Disclosure Of Related parties [Line Items] |  |  |
Amounts receivable, related party transactions | 4,680 | 2,236 | 1,035
Amounts payable, related party transactions | $ (953) | $ (5,760) | $ (4,803)
Description of nature of related party relationship | Joint Operations | Joint Operations | Joint Operations
Carlos Gulisano [Member] |  |  |
Disclosure Of Related parties [Line Items] |  |  |
Geological and geophysical expenses | $ 160 | $ 130 | $ 160
Description of nature of related party relationship | Non-Executive Director (a) | Non-Executive Director (a) | Non-Executive Director (a)
Pedro Aylwin [Member] |  |  |
Disclosure Of Related parties [Line Items] |  |  |
Administrative expenses | $ 656 | $ 561 | $ 581
Description of nature of related party relationship | Executive Director (b) | Executive Director (b) | Executive Director (b)

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