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Other Investments (Summary Of Financial Information For Midas) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 132 Months Ended |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 | Dec. 31, 2001
Total current assets | $ 9,844 | $ 91,429 |  |  | $ 91,429 |
Total non-current assets | 43,250 | 41,636 |  |  | 41,636 |
Total current liabilities | 1,222 | 31,087 |  |  | 31,087 |
Total non-current liabilities | 8,859 | 635 |  |  | 635 |
Total equity | 43,013 | 101,343 | 141,223 | 58,342 | 101,343 | 1,614
Operating expense | (22,149) | (33,537) | 49,234 |  | (85,615) |
Net loss | (59,488) | (70,656) | 51,546 | (81,274) | (159,872) |
Midas Gold Corp [Member] |  |  |  |  |  |
Total current assets | 14,742 | 19,864 |  |  | 19,864 |
Total non-current assets | 186,673 | 175,957 |  |  | 175,957 |
Total current liabilities | 2,432 | 5,108 |  |  | 5,108 |
Total non-current liabilities | 919 | 380 |  |  | 380 |
Total equity | 198,064 | 190,333 |  |  | 190,333 |
Operating expense | 3,908 | 7,813 |  |  |  |
Net loss | $ 3,796 | $ 7,180 |  |  |  |

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