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Liquidity - (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 1 Months Ended | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Jul. 31, 2013 Subsequent Event [Member] | Sep. 30, 2014 Subsequent Event [Member] Maximum [Member] | Sep. 30, 2014 Subsequent Event [Member] Minimum [Member] | Sep. 30, 2014 Guadalupe de los Reyes gold/silver project [Member]
Net Cash Provided by (Used in) Operating Activities | $ (5,511) | $ (21,476) |  | $ 1,750 | $ 1,500 |
Cash burn rate for future period | (5,511) | (21,476) |  | 1,750 | 1,500 |
Anticipation sale amount to be receive subject to purchase option |  |  | $ 6,000 |  |  | $ 500

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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Anticipation sale amount to be receive subject to purchase option + References No definition available. + Details
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