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Adoption of Accounting Pronouncements Adoption of Accounting Pronoucements (Tables) | 6 Months Ended
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Jun. 30, 2012
Adoption of Accounting Pronouncements [Abstract] |
Schedule Of New Accounting Pronouncements Balance Sheet Information [Table Text Block] |
Balance Sheet Information December 31, 2011 |  |  |  |  |  |
($ in thousands) |  | As Originally Reported |  | Effect of Change |  | As Adopted
Deferred policy acquisition costs |  | $ | 214,069 |  |  | (78,308 | ) |  | 135,761 |
Deferred federal income tax recoverable |  | 92,686 |  |  | 27,408 |  |  | 120,094 |
Retained earnings |  | 1,167,219 |  |  | (50,900 | ) |  | 1,116,319 |
Schedule Of New Accounting Pronouncements Income Statement Information [Table Text Block] |
Income Statement Information Six months ended June 30, 2011 |  |  |  |  |  |
($ in thousands, except per share amounts) |  | As Originally Reported |  | Effect of Change |  | As Adopted
Policy acquisition costs |  | $ | 227,273 |  |  | 2,934 |  |  | 230,207 |
Deferred federal income tax expense |  | (2,268 | ) |  | (1,027 | ) |  | (3,295 | )
Net income |  | $ | 23,874 |  |  | (1,907 | ) |  | 21,967 |
Net income per share: |  |  |  |  |  |
Basic |  | $ | 0.44 |  |  | (0.03 | ) |  | 0.41 |
Diluted |  | 0.43 |  |  | (0.03 | ) |  | 0.40 |
Income Statement Information Quarter ended June 30, 2011 |  |  |  |  |  |
($ in thousands, except per share amounts) |  | As Originally Reported |  | Effect of Change |  | As Adopted
Policy acquisition costs |  | $ | 113,843 |  |  | 1,320 |  |  | 115,163 |
Deferred federal income tax expense |  | (4,215 | ) |  | (462 | ) |  | (4,677 | )
Net income |  | 2,325 |  |  | (858 | ) |  | 1,467 |
Net income per share: |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.04 |  |  | (0.01 | ) |  | 0.03 |
Diluted |  | 0.04 |  |  | (0.01 | ) |  | 0.03 |
Schedule Of New Accounting Pronouncements Cash Flow Statement Information [Table Text Block] |
Cash Flow Information Six months ended June 30, 2011 |  |  |  |  |  |
($ in thousands, except per share amounts) |  | As Originally Reported |  | Effect of Change |  | As Adopted
(Increase) decrease in deferred policy acquisition costs |  | $ | (6,558 | ) |  | 2,934 |  |  | (3,624 | )
Decrease in net federal income taxes recoverable |  | 1,628 |  |  | (1,027 | ) |  | 601 |

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