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Mineral Properties (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended
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Jul. 31, 2014 | Oct. 31, 2013 | Jan. 31, 2014 Los Cardones, Mexico [Member] | Oct. 31, 2013 Los Cardones, Mexico [Member] | Aug. 31, 2014 Subsequent Event [Member] Los Cardones, Mexico [Member]
Business Acquisition [Line Items] |  |  |  |  |
Percentage of interest sold |  | 100.00% |  |  |
Sale price of gold project |  |  |  | $ 13,000 |
Proceeds from sale of gold project |  |  |  | 7,000 |
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates |  |  |  | 7,000 |
Sale price of gold project |  |  |  | 13,000 |
Proceeds to be received from sale of joint venture interest |  |  | 6,000 |  |
Increase to sale price of gold project | $ 250 |  |  |  | $ 250

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- Definition The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or sale of an entity that is related to it but not strictly controlled. + 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 (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition Percentage of interest sold. + References No definition available. + Details
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- Definition Proceeds to be received from sale of joint venture interest. + References No definition available. + Details
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- Definition Sale price of gold project. + References No definition available. + Details
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