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Other Investments (Tables) | 12 Months Ended
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Dec. 31, 2014
Other Investments [Abstract] |
Summary Of Financial Information For Midas |
|  | December 31, 2013 |  | December 31, 2012
Total current assets | $ | 14,742 | $ | 19,864
Total non-current assets |  | 186,673 |  | 175,957
Total current liabilities |  | 2,432 |  | 5,108
Total non-current liabilities |  | 919 |  | 380
Total equity |  | 198,064 |  | 190,333
|  | Year ended December 31,
|  | 2013 |  |  | 2012
Operating expense | $ | 3,908 |  | $ | 7,813
Net loss |  | 3,796 |  |  | 7,180
Schedule of Summaries of Investment |
|  |  | Years Ended December 31,
|  |  | 2014 |  | 2013
Fair value at beginning of period |  | $ | 20,990 | $ | 69,489
Sale of Midas Gold Shares, net of costs to sell |  |  | (10,560) |  | -
Unrealized gain/(loss) based on the fair value at the end of the period |  |  | (4,267) |  | (48,499)
Fair value at end of period |  | $ | 6,163 | $ | 20,990
Estimated tax benefit/(expense) for the period |  | $ | 1,478 | $ | 17,915
Midas Gold shares held at the end of the period |  |  | 15,802,615 |  | 31,802,615

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