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Supplemental Cash Flow Information and Material Non-Cash Transactions (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended | 12 Months Ended |  |  | 1 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2012 | Dec. 31, 2013 oz | Dec. 31, 2011 | Dec. 31, 2012 | Apr. 30, 2011 | Apr. 30, 2011 Midas Gold Corp [Member] | Jul. 31, 2012 Compensation Warrants [Member] | Dec. 31, 2013 2013 Facility [Member]
Number of shares issued in transaction, (Shares) |  |  | 30,402,615 |  |  | 30,402,615 |  | 612,180
Percentage of ownership under purchase agreement |  | 100.00% |  |  |  |  |  |
Royalty percentage on first tier volume production |  | 2.00% |  |  |  |  |  |
Gold production volume, first tier for royalty calculation |  | 1,250,000 |  |  |  |  |  |
Royalty percentage on second tier volume production |  | 2.50% |  |  |  |  |  |
Gold production volume, second tier for royalty calculation |  | 1,250,000 |  |  |  |  |  |
Warrants issued (Note 9) (in shares) |  |  |  | 4,757,941 |  |  | 166,667 |
Fair value of shares received |  |  | $ 78,872 |  | $ 78,872 |  |  |
Compensation Options Issued to Underwriters | 166,667 |  | 450,000 |  |  |  |  |

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- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section H + Details
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