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Business and Significant Accounting Policies - Kinross Shares Sold (Details) (USD $) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Accounting Policies [Abstract] |  |  |  |
Shares sold | 10 |  | 70 | 180
Proceeds | $ 45 |  | $ 358 | $ 1,591
Gain on sale | $ 38 |  | $ 308 | $ 1,464

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