Represents the amount of amortization expense related to the capitalized asset retirement costs.

No definition available.

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- Definition

Represents the amount of deferred income tax recovery on impairment of mineral properties.

+ References

No definition available.

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- Definition

Represents the amount of amortization expense related to the mineral property interests and capitalized asset retirement costs.

+ References

No definition available.

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- Definition

Mineral Property Interests [Line Items]

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No definition available.

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- Definition

Represents the number of properties of the entity which are subject to reclamation obligations.

+ References

No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

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-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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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)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Asset Retirement Obligation

-URI http://asc.fasb.org/extlink&oid=6505190

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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

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-Name Accounting Standards Codification

-Topic 410

-SubTopic 20

-Section 50

-Paragraph 1

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-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848

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- Definition

Current portion of 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

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- Definition

Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.

+ References

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- Definition

Amount of the Increase or Decrease in the amount of the asset retirement obligation during the current period for changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

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-Glossary Income Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6515339

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4

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MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($) item	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) item	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Minerals Property Interests [Line Items]
Impairment charges	$ 1,198		$ 29,740	$ 120,398
Recovery of deferred income tax	10,400		10,400	22,500
Income tax recovery	(1,619)	$ (8,714)	(15,103)	(52,705)
Changes in the asset retirement obligations
Amortization of mineral property interests and asset retirement obligations			966	923
Asset retirement obligation liability, beginning balance			7,471	7,247	$ 7,247
Settlements					(52)
Accretion of liability	110	100	342	309	407
Adjustment reflecting updated estimates			355		(131)
Asset retirement obligation liability, ending balance	8,168		8,168		7,471
Current portion of the asset retirement obligation	2,514		2,514		2,427
MSC
Minerals Property Interests [Line Items]
Income tax recovery	1,630	1,770	6,282	9,653	$ 10,503
Gold Bar Project \| Nevada
Minerals Property Interests [Line Items]
Impairment charges	1,161		20,847
Tonkin Project \| Nevada
Minerals Property Interests [Line Items]
Impairment charges			8,856
Los Azules Copper Project
Minerals Property Interests [Line Items]
Impairment charges		120,400		120,400
Recovery of deferred income tax		22,500		22,500
Income tax recovery	$ 10,400		$ 10,400
Los Azules Copper Project \| Argentina
Minerals Property Interests [Line Items]
Impairment charges				120,398
Tonkin property and El Gallo 1 mine portion of the El Gallo Complex
Changes in the asset retirement obligations
Number of most significant properties subject to reclamation obligations \| item	2		2
El Gallo mine
Changes in the asset retirement obligations
Amortization of mineral property interests and asset retirement obligations	$ 300	300	$ 1,000	1,000
Amortization of capitalized asset retirement costs	100	$ 100	300	$ 400
Other United States Properties \| Nevada
Minerals Property Interests [Line Items]
Impairment charges	$ 37		$ 37