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Other Investments (Summary Of Financial Information For Midas) (Details) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012
Total current assets | $ 19,075,000 |  | $ 19,075,000 |  | $ 9,844,000 |
Total non-current assets | 25,530,000 |  | 25,530,000 |  | 43,250,000 |
Total current liabilities | 4,841,000 |  | 4,841,000 |  | 1,222,000 |
Total non-current liabilities |  |  |  |  | 8,859,000 |
Total equity | 39,764,000 |  | 39,764,000 |  | 43,013,000 | 101,343,000
Operating expense | (2,315,000) | (7,369,000) | (5,225,000) | (16,684,000) |  |
Net Income (loss) | (2,919,000) | (21,015,000) | (4,059,000) | (48,421,000) | (59,488,000) |
Midas Gold Corp [Member] |  |  |  |  |  |
Total current assets | 14,742,000 |  | 14,742,000 |  |  |
Total non-current assets | 186,673,000 |  | 186,673,000 |  |  |
Total current liabilities | 2,432,000 |  | 2,432,000 |  |  |
Total non-current liabilities | 919,000 |  | 919,000 |  |  |
Total equity | 198,064,000 |  | 198,064,000 |  |  |
Operating expense |  |  | 3,908,000 |  | 2,268,000 |
Net Income (loss) |  |  | $ 3,796,000 |  | $ 2,337,000 |

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