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Provisions (Tables) | 12 Months Ended
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Dec. 31, 2017
Provisions [abstract] |
Disclosure of provisions |
|  | Closure and Decommissioning |  | Litigation |  | Total |
December 31, 2015 |  | $ | 50,453 |  |  | $ | 4,418 |  |  | $ | 54,871 |
Revisions in estimates and obligations incurred |  | 6,875 |  |  | — |  |  | 6,875 |
Charged (credited) to earnings: |  |  |  |  |  |  |  |  |
-new provisions |  | — |  |  | 347 |  |  | 347 |
-change in estimate |  | — |  |  | (104 | ) |  | (104 | )
-exchange gains on provisions |  | — |  |  | (32 | ) |  | (32 | )
Charged in the year |  | — |  |  | (297 | ) |  | (297 | )
Reclamation expenditures |  | (6,080 | ) |  | — |  |  | (6,080 | )
Accretion expense (Note 23) |  | 4,363 |  |  | — |  |  | 4,363 |
December 31, 2016 |  | $ | 55,611 |  |  | $ | 4,332 |  |  | $ | 59,943 |
Revisions in estimates and obligations incurred |  | 12,561 |  |  | — |  |  | 12,561 |
Charged (credited) to earnings: |  |  |  |  |  |  |
-new provisions |  | — |  |  | 767 |  |  | 767 |
-change in estimate |  | — |  |  | (228 | ) |  | (228 | )
-exchange gains on provisions |  | — |  |  | 93 |  |  | 93 |
Charged in the year |  | — |  |  | (867 | ) |  | (867 | )
Reclamation expenditures |  | (8,749 | ) |  | — |  |  | (8,749 | )
Accretion expense (Note 23) |  | 5,973 |  |  | — |  |  | 5,973 |
December 31, 2017 |  | $ | 65,396 |  |  | $ | 4,097 |  |  | $ | 69,493 |
Maturity analysis of total provisions: |  | December 31, 2017 |  |  | December 31, 2016 |
Current |  | $ | 8,245 |  |  | $ | 8,499 |
Non-Current |  | 61,248 |  |  | 51,444 |
|  | $ | 69,493 |  |  | $ | 59,943 |

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- Definition The disclosure of other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_84&doctype=Standard -URIDate 2017-03-09 + Details
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