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Stockholders' Equity (Convertible Preferred Stock) (Details) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2012 | Oct. 31, 2011 | Oct. 31, 2010 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Class of Stock [Line Items] |  |  |  |  |  |
Prepaid mineral leases |  |  |  | $ 2,022,830 | $ 1,577,544 |
Dividend rate, percentage |  |  |  | 7.50% |  |
Dividends in arrears, amount |  |  |  | 2,200,000 |  |
Dividend in arrears, per share |  |  |  | $ 0.05 |  |
Percentage of preferred stock outstanding |  |  |  | 25.00% |  |
Northern Comstock, LLC [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Prepaid mineral leases |  |  |  | 1,987,104 | 1,547,677 |
7.5% Series A-1 Convertible Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, stated value per share |  |  |  | $ 1,000.0 |  |
Conversion of convertible preferred stock, shares |  |  |  | 1,536 |  |
Conversion of preferred stock to common stock, per Share |  |  |  | $ 0.651 |  |
Shares issued |  |  |  | 862.5 | 862.5 |
7.5% Series A-1 Convertible Preferred Stock [Member] | Northern Comstock, LLC [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Shares issued | 862.5 | 862.5 | 862.5 |  |  |
Equity-based payment to non-employees |  |  |  | 2,027,323 | 2,092,382 | 419,728
7.5% Series A-2 Convertible Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, stated value per share |  |  |  | $ 1,000.0 |  |
Conversion of convertible preferred stock, shares |  |  |  | 1,536 |  |
Conversion of preferred stock to common stock, per Share |  |  |  | $ 0.651 |  |
Minimum average common stock price for which Each shares of convertible preferred stock automatically converts into shares of common stock |  |  |  | $ 4.5 |  |
Number of consecutive trading days for which each shares of convertible preferred stock automatically converts into shares of common stock |  |  |  | 20 days |  |
Number of trading days for which Each shares of convertible preferred stock automatically converts into shares of common stock |  |  |  | 30 days |  |
7.5% Series B Convertible Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, stated value per share |  |  |  | $ 1,000.0 |  |
Conversion of convertible preferred stock, shares |  |  |  | 606 |  |
Conversion of preferred stock to common stock, per Share |  |  |  | $ 1.65 |  |
Shares issued |  |  | 35,749 |  |  |
Proceeds from issuance of convertible preferred stock |  |  | 35,750,000 |  |  |
Net proceeds from issuance of convertible preferred stock |  |  | 33,200,000 |  |  |
Minimum average common stock price for which Each shares of convertible preferred stock automatically converts into shares of common stock |  |  |  | $ 4.5 |  |
Number of consecutive trading days for which each shares of convertible preferred stock automatically converts into shares of common stock |  |  |  | 20 days |  |
Number of trading days for which Each shares of convertible preferred stock automatically converts into shares of common stock |  |  |  | 30 days |  |

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