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Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Non Credit Other Than Temporary Impaired Securities, Before Tax | $ 357,000 | $ 1,669,000 | $ 14,000
Amortization of non-credit OTTI losses on HTM securities, tax | (125,000) | (584,000) | (5,000)
Amortization on net unrealized gains on HTM securities | (580,000) | (1,299,000) | (1,577,000)
Total HTM Related, Tax | 203,000 | 455,000 | 552,000
Amount reclassified from AOCI, HTM | (377,000) | (844,000) | (1,025,000)
Total realized gains and losses on AFS disposals, gross | (14,016,000) | (28,864,000) | (23,540,000)
Realized gains and losses on AFS disposals, Tax | 4,906,000 | 10,102,000 | 8,239,000
Realized gains on available for sale securities | (9,110,000) | (18,762,000) | (15,301,000)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax | 7,077,000 | 1,902,000 | 4,374,000
Total defined benefit pension and post-retirement life, Gross | 9,515,000 | (52,234,000) | 64,054,000
Total defined benefit pension and post-retirement life,Tax | (3,330,000) | 18,281,000 | (22,419,000)
Total defined benefit pension and post-retirement plans | 6,185,000 | (33,953,000) | $ 41,635,000
Policy acquisition costs [Member] |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax | 5,539,000 | 1,571,000 |
Loss and loss expense incurred [Member] |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax | 1,538,000 | 331,000 |
Net Realized Investment Gains [Member] |  |  |
Unrealized gains and losses on HTM disposals | 308,000 | 157,000 |
Total realized gains and losses on AFS disposals, gross | (14,016,000) | (28,864,000) |
Net Income Financial Statement Line Item [Member] |  |  |
Amount reclassified from AOCI | (4,655,000) | (17,285,000) |
Amount reclassified from AOCI, HTM | (377,000) | (844,000) |
Realized gains on available for sale securities | (9,110,000) | (18,762,000) |
Net Income Financial Statement Line Item [Member] | Accumulated Defined Benefit Plans Adjustment [Member] |  |  |
Total defined benefit pension and post-retirement plans | 4,600,000 | 1,236,000 |
Net Income Financial Statement Line Item [Member] | Other-than-Temporary Impairment [Member] |  |  |
Amount reclassified from AOCI | 232,000 | 1,085,000 |
Total Federal Income Tax Expense [Member] |  |  |
Total HTM Related, Tax | (203,000) | (455,000) |
Realized gains and losses on AFS disposals, Tax | 4,906,000 | 10,102,000 |
Total defined benefit pension and post-retirement life,Tax | (2,477,000) | (666,000) |
Total Federal Income Tax Expense [Member] | Other-than-Temporary Impairment [Member] |  |  |
Amortization of non-credit OTTI losses on HTM securities, tax | 125,000 | 584,000 |
Income From Continuing Operations Before Federal Income Tax [Member] |  |  |
Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Non Credit Other Than Temporary Impaired Securities, Before Tax | 357,000 | 1,669,000 |
Amortization on net unrealized gains on HTM securities | (580,000) | (1,299,000) |
Total realized gains and losses on AFS disposals, gross | (14,016,000) | (28,864,000) |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax | 7,077,000 | 1,902,000 |
Total defined benefit pension and post-retirement life, Gross | 7,077,000 | 1,902,000 |
Net Investment Income Earned [Member] |  |  |
Amortization on net unrealized gains on HTM securities | (888,000) | (1,456,000) |
Non Credit OTTI On Disposed Securities [Member] | Net Realized Investment Gains [Member] |  |  |
Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Non Credit Other Than Temporary Impaired Securities, Before Tax | $ 357,000 | $ 1,669,000 |

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