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Adoption of Accounting Pronouncements (Income Statement Statement) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Policy acquisition costs | $ 131,849 | $ 116,111 | $ 391,026 | $ 346,318
Deferred income tax expense (benefit) | 7,128 | (164) | 4,568 | (3,459)
Net income (loss) | 18,274 | (17,968) | 36,655 | 3,999
Basic net income (loss) per share | $ 0.33 | $ (0.33) | $ 0.67 | $ 0.07
Diluted net income (loss) per share | $ 0.33 | $ (0.33) | $ 0.66 | $ 0.07
As Previously Reported [Member] |  |  |  |
Policy acquisition costs |  | 119,456 |  | 346,729
Deferred income tax expense (benefit) |  | (1,335) |  | (3,603)
Net income (loss) |  | (20,142) |  | 3,732
Basic net income (loss) per share |  | $ (0.37) |  | $ 0.07
Diluted net income (loss) per share |  | $ (0.37) |  | $ 0.07
Add: Adjustment for the cumulative effect on prior years of applying retroactively the new method of accounting for deferred policy acquisition costs [Member] |  |  |  |
Policy acquisition costs |  | (3,345) |  | (411)
Deferred income tax expense (benefit) |  | 1,171 |  | 144
Net income (loss) |  | $ 2,174 |  | $ 267
Basic net income (loss) per share |  | $ 0.04 |  | $ 0.00
Diluted net income (loss) per share |  | $ 0.04 |  | $ 0.00

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