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ASSET RETIREMENT OBLIGATIONS (Details) $ in Thousands, CAD in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 03, 2015 USD ($) | Dec. 31, 2017 USD ($) | Jun. 30, 2017 USD ($) | Dec. 31, 2017 CAD | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Mineral Property Interests |  |  |  |  |  |  |
Restricted Cash |  | $ 10,000 |  |  | $ 10,000 |  |
Reclamation obligations |  |  |  |  |  |  |
Reclamation Adjustment |  |  |  |  | 1,426 | $ 89 |
Remediation Accretion |  |  |  |  | 635 | 506 | $ 429
Reclamation and remediation expense |  |  |  |  | 2,061 | 595 | 429
Changes in the asset retirement obligations |  |  |  |  |  |  |
Asset retirement obligation liability, beginning balance |  |  |  |  | 9,843 | 7,784 |
Settlements |  |  |  |  | (126) | (66) |
Accretion of liability |  |  |  |  | 635 | 506 |
Current year additions |  |  |  |  | 11,803 |  |
Adjustment reflecting updated estimates |  |  |  |  | 2,561 | 1,619 |
Foreign exchange revaluation |  |  |  |  | 6 |  |
Asset retirement obligation liability, ending balance |  | 24,722 |  |  | 24,722 | 9,843 | $ 7,784
Current portion |  | (646) |  |  | (646) | (537) |
Non-current portion |  | 24,076 |  |  | 24,076 | $ 9,306 |
Timmins |  |  |  |  |  |  |
Mineral Property Interests |  |  |  |  |  |  |
Surety bonds upfront deposit amount |  | 100 | $ 100 |  |  |  |
Tonkin Complex |  |  |  |  |  |  |
Mineral Property Interests |  |  |  |  |  |  |
Surety bonds upfront deposit amount | $ 3,600 |  |  |  |  |  |
Black Fox |  |  |  |  |  |  |
Mineral Property Interests |  |  |  |  |  |  |
Reclamation bonding obligation |  |  |  | CAD 20.5 | 16,500 |  |
Changes in the asset retirement obligations |  |  |  |  |  |  |
Asset retirement obligation liability, ending balance |  | 11,200 |  |  | $ 11,200 |  |
Gold Bar project |  |  |  |  |  |  |
Reclamation obligations |  |  |  |  |  |  |
Reclamation Adjustment |  | $ 100 |  |  |  |  |

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- Definition Amount of reclamation adjustments during the period. + References No definition available. + Details
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- Definition Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6394232&loc=d3e17558-110866 + Details
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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 + Details
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- Definition Amount of foreign currency translation gain (loss) which decreases (increases) asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of asset retirement obligations incurred during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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