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Interim Financial Statements (Details) |  |  |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 13, 2016 USD ($) shares | Apr. 01, 2016 USD ($) | Mar. 31, 2016 USD ($) shares | Mar. 31, 2016 USD ($) oz | Mar. 31, 2015 USD ($) | Apr. 13, 2016 USD ($) shares | 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 |  |  |  | 1,702 |  |  |  |  |  |
Gold revenue |  |  |  | $ 1,980,764 | $ 5,927,174 |  |  |  |  |
Ounces of silver sold during the period | oz |  |  |  | 29,438 |  |  |  |  |  |
Silver sales |  |  |  | $ 400,000 |  |  |  |  |  |
Retained earnings (accumulated deficit) |  |  | $ (203,114,930) | (203,114,930) |  |  | $ (199,063,535) |  |  |
Net income (loss) |  |  |  | (4,051,395) | 1,289,114 |  |  |  |  |
Net cash provided by (used in) operating activities |  |  |  | (704,965) | 209,498 |  |  |  |  |
Cash and cash equivalents |  |  | 3,587,349 | 3,587,349 | $ 4,179,264 |  | 1,663,170 |  |  | $ 5,308,804
Current assets |  |  | 7,523,372 | 7,523,372 |  |  | 5,649,027 |  |  |
Current liabilities |  |  | 10,758,476 | 10,758,476 |  |  | $ 12,142,233 |  |  |
Current liabilities in excess of current assets |  |  | $ (3,200,000) | (3,200,000) |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock issued during period (in shares) | shares |  |  | 10,000,000 |  |  |  |  |  |  |
Proceeds from issuance of common stock, gross |  |  | $ 3,500,000 |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  |  |  | 3,500,000 |  |  |  |  |  |
Mine claims and costs |  |  |  | 296,433 | $ 421,065 |  |  |  |  |
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 |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock issued during period (in shares) | shares | 1,500,000 |  |  |  |  | 11,500,000 |  |  |  |
Proceeds from the issuance of common stock | $ 525,000 |  |  |  |  | $ 4,000,000 |  |  |  |
Subsequent Event | Note Payable (Auramet Facility) | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Repayments of lines of credit |  | $ 1,200,000 |  |  |  |  |  |  |  |
Reclassification, Effect |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Mine claims and costs |  |  |  | $ (343,042) |  |  |  |  |  |

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