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Commitments and Contingencies (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2016 | Mar. 28, 2016 | Mar. 31, 2016
Loss Contingencies [Line Items] |  |  |
Percentage of royalty obligations |  |  | 3.00%
Number of shares issued in exchange for services |  | 9,000,000 |
Value of services exchanged for shares |  | $ 5 |
Holding period of shares issued in exchange for services |  | 6 months |
Minimum |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of royalty obligations |  |  | 0.50%
Share price (in dollars per share) (at least) |  | $ 0.56 |
Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of royalty obligations |  |  | 5.00%
American Mining & Tunneling, LLC and American Drilling Corp, LLC |  |  |
Loss Contingencies [Line Items] |  |  |
Number of shares issued in exchange for services | 0 |  |

X
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