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Provisions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of other provisions [line items] |  |
Provisions, beginning | $ 195,384 | $ 75,155
Revisions in estimates and obligations incurred | 40,857 | 32,909
Acquired from Tahoe (Note 8) |  | 78,052
-new provisions | 2,402 | 2,551
-change in estimate | (1,754) | (252)
-exchange gains on provisions | (569) | (265)
Charged in the year | (165) | (405)
Reclamation expenditures | (2,462) | (2,264)
Accretion expense (Note 24) | 8,260 | 9,903
Provisions, ending | 241,953 | 195,384
Contingent liability for decommissioning, restoration and rehabilitation costs [member] |  |
Disclosure of other provisions [line items] |  |
Provisions, beginning | 188,455 | 70,587
Revisions in estimates and obligations incurred | 40,857 | 32,909
Acquired from Tahoe (Note 8) |  | 77,320
-new provisions | 0 | 0
-change in estimate | 0 | 0
-exchange gains on provisions | 0 | 0
Charged in the year | 0 | 0
Reclamation expenditures | (2,462) | (2,264)
Accretion expense (Note 24) | 8,260 | 9,903
Provisions, ending | 235,110 | 188,455
Litigation [member] |  |
Disclosure of other provisions [line items] |  |
Provisions, beginning | 6,929 | 4,568
Revisions in estimates and obligations incurred | 0 | 0
Acquired from Tahoe (Note 8) |  | 732
-new provisions | 2,402 | 2,551
-change in estimate | (1,754) | (252)
-exchange gains on provisions | (569) | (265)
Charged in the year | (165) | (405)
Reclamation expenditures | 0 | 0
Accretion expense (Note 24) | 0 | 0
Provisions, ending | $ 6,843 | $ 6,929

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase in existing other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount recognised for new other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_c&doctype=Standard -URIDate 2020-01-01 + Details
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