Represents the amount of an agreement in which the entity entered to sell exploration concessions.

No definition available.

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- Definition

Represents the ares in hectares

+ References

No definition available.

+ Details

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- Definition

Represents the number of mining concessions sold during the period

+ References

No definition available.

+ Details

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- Definition

Represents the number of properties whose rights are relinquished as minimum requirement for continued evaluation is not fulfilled.

+ References

No definition available.

+ Details

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- Definition

Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230

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-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Impairment

-URI http://asc.fasb.org/extlink&oid=6515133

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- Definition

The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

+ 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

- Details

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Property, Plant and Equipment and Assets Held for Sale (Details 2) (USD $)	12 Months Ended		3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014 ha	Jun. 30, 2013	Dec. 31, 2013
Property, plant and equipment
Impairment of long lived assets		$ 243,985,000
Proceeds from sale of assets	982,000	4,217,000
Gain on sale of assets	689,000us-gaap_GainLossOnDispositionOfAssets	3,626,000us-gaap_GainLossOnDispositionOfAssets
Zacatecas District
Property, plant and equipment
Number of Mining Concessions Sold	45
Area in Hectares	770
Proceeds from sale of assets	700,000
Gain on sale of assets	500,000
Peruvian Exploration Properties
Property, plant and equipment
Area in Hectares			1,100
Amount of Agreement to Sell Property			450,000
Proceeds from sale of assets	150,000,000
Velardena Properties
Property, plant and equipment
Impairment of long lived assets	0	235,326,000		229,410,000	5,916,000
San Diego Exploration Property
Property, plant and equipment
Impairment of long lived assets	0	8,659,000		8,428,000	231,000
Mineral Properties
Property, plant and equipment
Impairment of long lived assets		217,524,000
Mineral Properties \| Velardena Properties
Property, plant and equipment
Impairment of long lived assets		217,524,000		211,608,000	5,916,000
Exploration Properties
Property, plant and equipment
Impairment of long lived assets		12,131,000
Exploration Properties \| Mexico
Property, plant and equipment
Number of properties whose rights are relinquished as minimum requirement for continued evaluation is not fulfilled		2
Assets Held for Sale
Carrying value of the properties in assets held for sale		200,000			200,000
Exploration Properties \| Velardena Properties
Property, plant and equipment
Impairment of long lived assets		3,472,000		3,472,000
Exploration Properties \| San Diego Exploration Property
Property, plant and equipment
Impairment of long lived assets		8,659,000		8,428,000	231,000
Building
Property, plant and equipment
Impairment of long lived assets		3,036,000
Building \| Velardena Properties
Property, plant and equipment
Impairment of long lived assets		3,036,000
Mining equipment and machinery
Property, plant and equipment
Impairment of long lived assets		10,394,000
Mining equipment and machinery \| Argentina
Property, plant and equipment
Proceeds from sale of assets	130,000,000
Mining equipment and machinery \| Velardena Properties
Property, plant and equipment
Impairment of long lived assets		10,394,000
Other furniture and equipment
Property, plant and equipment
Impairment of long lived assets		900,000
Other furniture and equipment \| Velardena Properties
Property, plant and equipment
Impairment of long lived assets		$ 900,000