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

No definition available.

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- Definition

Mineral Property Interests [Line Items]

+ References

No definition available.

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- Definition

The conditional deferred payment to be made provided the El Gallo 1 Mine is in operation at the time of the payment.

+ References

No definition available.

+ Details

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- Definition

The required payment of gross revenue less allowable deductions to the tiered net smelter return royalty (the “Royalty”) on the El Gallo 1 Mine.

+ References

No definition available.

+ Details

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- Definition

The eventually reduced percentage of required payment of gross revenue less allowable deductions to the tiered net smelter return royalty (the “Royalty”) on the El Gallo 1 Mine.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of annual fees on the value of the surety bonds.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of upfront deposit on the value of the surety bonds.

+ References

No definition available.

+ Details

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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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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

Exploration expenses (including prospecting) related to the mining industry would be included in operating expenses. Exploration costs include costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of mineral reserves.

+ 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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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6515339

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- Definition

Mineral properties, net of adjustments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 25
-Paragraph 7
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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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-SubTopic 10
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-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

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MINERAL PROPERTY INTEREST AND ASSET RETIREMENT OBLIGATIONS - Mineral Property Interests (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Apr. 19, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Mineral Property Interests
Mineral property interests			$ 243,051	$ 258,625	$ 243,051	$ 258,625	$ 237,245
Impairment charges				28,542		28,542
Recovery of deferred income tax			10,000	10,000	10,000	10,000
Income tax recovery			(856)	(12,321)	(2,723)	(13,484)
Exploration costs			(1,689)	(3,080)	$ (3,429)	(5,422)
Percentage of annual fees on surety bonds					1.50%
Percentage of upfront deposit on surety bonds					10.00%
MSC
Mineral Property Interests
Income tax recovery			1,530	2,240	$ 6,134	4,652	$ 15,942
Tonkin Project
Mineral Property Interests
Impairment charges			8,900		8,900
Gold Bar Project
Mineral Property Interests
Impairment charges			19,700		19,700
Royalty
Mineral Property Interests
Required payment of gross revenue less allowable deductions to the tiered net smelter return royalty on the El Gallo 1 Mine (as a percent)		3.50%
Eventually reduced percentage of required payment		1
Purchase price		$ 5,300
Conditional deferred payment to be made provided the El Gallo 1 Mine is in operation at the time of the payment	$ 1,000
Argentina
Mineral Property Interests
Mineral property interests			191,490	202,889	191,490	202,889
Exploration costs			(193)	(659)	(503)	(922)
Mexico
Mineral Property Interests
Mineral property interests			14,763	10,051	14,763	10,051
Exploration costs			$ (860)	$ (1,275)	$ (1,645)	$ (2,874)