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Fair Value Option (Tables) | 6 Months Ended
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Jun. 30, 2012
Fair Value Option [Abstract] |
Gains And Losses Due To Changes In Fair Value Of Investments | The following table presents gains and losses due to changes in fair value of investments that are measured at fair value pursuant to application of the fair value option:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2012 |  | 2011 |  | 2012 |  | 2011
| (Amounts in thousands)
Fixed maturity securities | $ | 9,812 |  |  | $ | 33,879 |  |  | $ | 30,815 |  |  | $ | 24,309 |
Equity securities | (33,972 | ) |  | (13,237 | ) |  | (5,476 | ) |  | 17,151 |
Short-term investments | (628 | ) |  | (45 | ) |  | (784 | ) |  | (26 | )
Total | $ | (24,788 | ) |  | $ | 20,597 |  |  | $ | 24,555 |  |  | $ | 41,434 |

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- Definition Tabular disclosure of unrealized gains and losses on investments. + References No definition available. + Details
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