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Long-Term Reclamation Liability and Retirement Obligation Asset (Tables) | 12 Months Ended
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Dec. 31, 2012
Long-Term Reclamation Liability and Retirement Obligation Asset [Abstract] |
Schedule of Other Noncurrent Liabilities |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Long-term reclamation liability - beginning of period |  | $ | 2,007,605 |  |  | $ | 1,332,730 |  |  | $ | 1,186,966 |
Additional obligations incurred |  |  | 2,405,314 |  |  |  | 577,529 |  |  |  | 58,447 |
Accretion of reclamation liability |  |  | 184,237 |  |  |  | 97,346 |  |  |  | 87,317 |
Long-term reclamation liability - end of period |  | $ | 4,597,156 |  |  | $ | 2,007,605 |  |  | $ | 1,332,730 |
Schedule of Asset Retirement Obligations |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Retirement obligation asset - beginning of period |  | $ | 825,481 |  |  | $ | 339,357 |  |  | $ | 340,159 |
Additional obligations incurred |  |  | 2,405,314 |  |  |  | 577,529 |  |  |  | 58,447 |
Amortization of retirement obligation asset |  |  | (427,477 | ) |  |  | (91,405 | ) |  |  | (59,249 | )
Retirement obligation asset - end of period |  | $ | 2,803,318 |  |  | $ | 825,481 |  |  | $ | 339,357 |

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- Definition Schedule of Other Noncurrent Liabilities [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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