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Interim Financial Statements - Additional Information (Details) oz in Thousands |  |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 03, 2018 USD ($) | Nov. 09, 2017 | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) oz | Jun. 30, 2017 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Expense reimbursements |  |  |  |  | $ 300,000 |  |  |
Annual gold-equivalent production (in ounces) | oz |  |  |  |  | 20 |  |  |
Accumulated deficit |  |  | $ 227,504,653 |  | $ 227,504,653 |  | $ 222,604,417 |
Net loss |  |  | 2,415,332 | $ 2,932,722 | 4,900,236 | $ 5,706,903 |  |
Net cash used in operating activities |  |  |  |  | 2,183,677 | 3,613,933 |  |
Cash and cash equivalents |  |  | 1,469,429 | $ 1,031,209 | 1,469,429 | $ 1,031,209 | 2,066,718 | $ 184,359
Current assets |  |  | 7,542,080 |  | 7,542,080 |  | 7,731,508 |
Current liabilities |  |  | 1,583,291 |  | 1,583,291 |  | $ 1,109,485 |
Current assets in excess of current liabilities |  |  | 5,900,000 |  | 5,900,000 |  |  |
Unused borrowing capacity |  |  | 7,000,000 |  | 7,000,000 |  |  |
Reverse stock split conversion ratio |  | 0.2 |  |  |  |  |  |
Purchase Agreement | Leviston Resources LLC |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Remaining amount available for issuance under agreement |  |  | $ 2,600,000 |  | $ 2,600,000 |  |  |
Tonogold Resources, Inc. |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Payments made to the company | $ 2,000,000 |  |  |  |  |  |  |
Secured Debt | Senior Secured Debenture due 2021 |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Proceeds used to reduce indebtedness | $ 1,500,000 |  |  |  |  |  |  |

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