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Interim Financial Statements (Details) |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 28, 2016 USD ($) | Apr. 13, 2016 USD ($) shares | Mar. 31, 2016 USD ($) shares | Apr. 30, 2016 USD ($) shares | Jun. 30, 2016 USD ($) oz | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) oz shares | Jun. 30, 2015 USD ($) | Dec. 31, 2015 USD ($) | Dec. 28, 2015 USD ($) | Mar. 06, 2015 USD ($) | Dec. 31, 2014 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Ounces of gold sold during the period | oz |  |  |  |  | 1,255 |  | 2,957 |  |  |  |  |
Gold revenue |  |  |  |  | $ 1,457,991 | $ 5,442,027 | $ 3,438,755 | $ 11,369,201 |  |  |  |
Ounces of silver sold during the period | oz |  |  |  |  | 22,131 |  | 51,569 |  |  |  |  |
Silver sales |  |  |  |  | $ 400,000 |  | $ 700,000 |  |  |  |  |
Retained earnings (accumulated deficit) |  |  |  |  | (205,969,714) |  | (205,969,714) |  | $ (199,063,535) |  |  |
Net income (loss) |  |  |  |  | (2,854,784) | (1,509,446) | (6,906,179) | (220,332) |  |  |  |
Net cash provided by (used in) operating activities |  |  |  |  |  |  | (3,184,652) | 368,113 |  |  |  |
Cash and cash equivalents |  |  |  |  | 823,724 | 6,783,406 | 823,724 | 6,783,406 | 1,663,170 |  |  | $ 5,308,804
Current assets |  |  |  |  | 10,263,447 |  | 10,263,447 |  | 5,649,027 |  |  |
Current liabilities |  |  |  |  | 8,684,961 |  | 8,684,961 |  | $ 12,142,233 |  |  |
Current assets in excess of current liabilities |  |  |  |  | 1,600,000 |  | 1,600,000 |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued during period (in shares) | shares |  | 1,500,000 | 10,000,000 | 1,500,000 |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  | $ 525,000 | $ 3,500,000 | $ 525,000 |  |  | 4,025,000 | 0 |  |  |  |
Mine claims and costs |  |  |  |  | 273,877 | $ 293,163 | 570,310 | $ 714,227 |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility, borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 5,000,000 |
Note Payable - Auramet Facility | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility, borrowing capacity |  |  |  |  | 10,000,000 |  | 10,000,000 |  |  | $ 10,000,000 |  |
Reclassification, Effect |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Mine claims and costs |  |  |  |  | $ (364,092) |  | $ (707,134) |  |  |  |  |
International Assets Advisory LLC |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued during period (in shares) | shares |  |  |  |  |  |  | 0 |  |  |  |  |
Aggregate offering price, up to | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |
Commission paid per share sold, up to (as a percent) | 2.50% |  |  |  |  |  |  |  |  |  |  |

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