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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