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Interim Financial Statements (Details) (USD $) | 0 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 14, 2014 | Nov. 30, 2013 T | Jun. 30, 2014 oz | Jun. 30, 2013 | Jun. 30, 2014 oz | Jun. 30, 2013 | Dec. 31, 2013 T | Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |
Proceeds from issuance of common stock, net of expenses | $ 11,000,000 |  |  |  |  |  |  |
Shares underwritten in public offering (in shares) | 7,475,000 |  |  |  |  |  |  |
Shares delivered to underwriters for over-allotment option | 975,000 |  |  |  |  |  |  |
Price of shares underwritten (in usd per share) | $ 1.59 |  |  |  |  |  |  |
Ounces of gold sold during the period |  |  | 4,645 |  | 9,152 |  |  |
Gold revenue |  |  | 5,978,983 | 6,811,516 | 11,585,047 | 10,479,438 |  |
Ounces of silver sold during the period |  |  | 48,621 |  | 97,979 |  |  |
Silver sales |  |  | 1,000,000 |  | 2,000,000 |  |  |
Accumulated deficit |  |  | (186,183,901) |  | (186,183,901) |  | (178,970,335) |
Permitted annual mineral production (in tons) |  | 4,000,000 |  |  |  |  | 1,000,000 |
Net loss |  |  | (3,388,586) | (5,524,324) | (7,213,566) | (11,287,356) |  |
Net cash used in operating activities |  |  |  |  | (2,281,354) | (8,396,079) |  |
Cash and cash equivalents |  |  | 12,226,293 | 2,438,121 | 12,226,293 | 2,438,121 | 2,409,446 | 5,973,079
Proceeds from the issuance of common stock | $ 11,900,000 |  |  |  | $ 10,993,283 | $ 10,000,000 |  |

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