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Comprehensive Income (Reclassification out of AOCI) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Total HTM Related, Tax | $ (165) | $ (117) | $ (631) | $ (665)
Amounts reclassified from AOCI, HTM Related | (307) | (219) | (1,172) | (1,236)
Total unrealized gains and losses on AFS, Gross | (13,516) | 1,037 | (24,780) | (3,451)
Total unrealized gains and losses on AFS, Tax | (4,731) | 363 | (8,673) | (1,208)
Realized (gains) losses on available for sale securities | (8,785) | 674 | (16,107) | (2,243)
Amount reclassified into Net Income: Net actuarial loss, Gross | 790 | 1,391 | 3,419 | 4,172
Prior service cost |  | 38 | 10 | 113
Curtailment expense |  |  | 16 |
Total defined benefit pension and post-retirement life, Gross | 790 | 1,429 | 47,445 | 4,285
Total defined benefit pension and post-retirement life,Tax | 277 | 501 | 16,606 | 1,500
Total defined benefit pension and post-retirement plans | 513 | 928 | 30,839 | 2,785
Accumulated Other-than-Temporary Impairment [Member] |  |  |  |
Amounts reclassified from AOCI | 1 | 6 | 9 | 177
Net Realized Investment Gains [Member] |  |  |  |
Unrealized gains and losses on HTM disposals | (19) |  | (170) |
Total unrealized gains and losses on AFS, Gross | (13,516) |  | (24,780) |
Net Investment Income Earned [Member] |  |  |  |
HTM Related, Gross | (453) |  | (1,633) |
Net Investment Income Earned [Member] | Accumulated Other-than-Temporary Impairment [Member] |  |  |  |
Amortization of non-credit OTTI losses on HTM securities | 1 |  | 14 |
Income From Continuing Operations Before Federal Income Tax [Member] |  |  |  |
HTM Related, Gross | (472) |  | (1,803) |
Total unrealized gains and losses on AFS, Gross | (13,516) |  | (24,780) |
Amount reclassified into Net Income: Net actuarial loss, Gross | 790 |  | 3,419 |
Prior service cost | 0 |  | 10 |
Curtailment expense | 0 |  | 16 |
Total defined benefit pension and post-retirement life, Gross | 790 |  | 3,445 |
Income From Continuing Operations Before Federal Income Tax [Member] | Accumulated Other-than-Temporary Impairment [Member] |  |  |  |
Amortization of non-credit OTTI losses on HTM securities | 1 |  | 14 |
Total Federal Income Tax Expense [Member] |  |  |  |
Total HTM Related, Tax | 165 |  | 631 |
Total unrealized gains and losses on AFS, Tax | 4,731 |  | 8,673 |
Total defined benefit pension and post-retirement life,Tax | (277) |  | (1,206) |
Total Federal Income Tax Expense [Member] | Accumulated Other-than-Temporary Impairment [Member] |  |  |  |
Amortization of non-credit OTTI losses on HTM securities, tax | 0 |  | (5) |
Net Income Financial Statement [Member] |  |  |  |
Amounts reclassified from AOCI | (8,578) |  | (15,031) |
Amounts reclassified from AOCI, HTM Related | (307) |  | (1,172) |
Realized (gains) losses on available for sale securities | (8,785) |  | (16,107) |
Net Income Financial Statement [Member] | Accumulated Other-than-Temporary Impairment [Member] |  |  |  |
Amounts reclassified from AOCI | 1 |  | 9 |
Net Income Financial Statement [Member] | Accumulated Defined Benefit Plans Adjustment [Member] |  |  |  |
Total defined benefit pension and post-retirement plans | 513 |  | 2,239 |
Loss and loss expense incurred [Member] |  |  |  |
Amount reclassified into Net Income: Net actuarial loss, Gross | 159 |  | 717 |
Prior service cost | 0 |  | 7 |
Policy acquisition costs [Member] |  |  |  |
Amount reclassified into Net Income: Net actuarial loss, Gross | 631 |  | 2,702 |
Prior service cost | 0 |  | 3 |
Curtailment expense | $ 0 |  | $ 16 |

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