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ASSET RETIREMENT OBLIGATIONS (Tables) | 12 Months Ended
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Dec. 31, 2017
ASSET RETIREMENT OBLIGATIONS |
Schedule of reclamation expense |
|  | Year ended December 31,
|  | 2017 |  | 2016 |  | 2015
Reclamation Adjustment reflecting updated estimates |  | $ | 1,426 |  | $ | 89 |  | $ | —
Reclamation Accretion |  |  | 635 |  |  | 506 |  |  | 429
Total |  | $ | 2,061 |  | $ | 595 |  | $ | 429
Schedule of reconciliation of asset retirement obligations |
|  | 2017 |  | 2016
Asset retirement obligation liability, beginning of the period |  | $ | 9,843 |  | $ | 7,784
Settlements |  |  | (126) |  |  | (66)
Accretion of liability |  |  | 635 |  |  | 506
Acquisitions and divestitures |  |  | 11,803 |  |  | —
Adjustment reflecting updated estimates |  |  | 2,561 |  |  | 1,619
Foreign exchange revaluation |  |  | 6 |  |  | —
Asset retirement obligation liability, ending balance |  | $ | 24,722 |  | $ | 9,843
Current portion |  |  | (646) |  |  | (537)
Non-current portion |  | $ | 24,076 |  | $ | 9,306

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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