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Inventories, Stockpiles and Mineralized Material on Leach Pads (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 USD ($) oz | Dec. 31, 2015 USD ($)
Inventory Disclosure [Abstract] |  |
In-process | $ 202,613 | $ 249,130
Finished goods | 0 | 201,821
Total inventories | 202,613 | 450,951
Stockpiles | 0 | 0
Mineralized material on leach pads | 800,073 | 1,322,211
Total stockpiles and mineralized material on leach pads | 800,073 | 1,322,211
Total | $ 1,002,686 | $ 1,773,162
Estimated recoverable gold ounces in stockpiles and leach pads (as a percent) | 87.50% | 85.00%
Increase of gold ounces in stockpiles and on leach pad due to change in estimate (in ounces) | oz | 1,317 |
Decrease in cost of mining revenue due to change in estimate | $ 300,000 |

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- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.BB) -URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section BB Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Article 5 + Details
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