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Summary of Significant Accounting Policies (Details 7) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Components of comprehensive income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | $ 34,287 | $ 23,599 | $ 25,995 | $ 27,012 | $ 31,826 | $ 32,266 | $ 13,103 | $ 26,671 | $ 32,913 | $ 23,637 | $ (11,851) | $ 25,807 | $ 110,893 |  | $ 103,866 | $ 70,506
Change in net unrealized gains and losses on fixed maturities and equity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net unrealized holding gains and losses on fixed maturities and equity securities arising during the period |  |  |  |  |  |  |  |  |  |  |  |  | (375,184) |  | 204,460 | 281,202
Less: reclassification adjustment for net gains included in income before income tax |  |  |  |  |  |  |  |  |  |  |  |  | 22,245 |  | 27,298 | 37,663
Total, before tax |  |  |  |  |  |  |  |  |  |  |  |  | (397,429) |  | 177,162 | 243,539
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  | (149,019) |  | 62,984 | 86,585
Total, net of tax |  |  |  |  |  |  |  |  |  |  |  |  | (248,410) | [1],[2] | 114,178 | 156,954
Change in net funded status of pension and other postretirement benefit obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Before tax |  |  |  |  |  |  |  |  |  |  |  |  | 5,645 |  | 1,276 | (4,801)
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  | 2,110 |  | 345 | (1,714)
Total, net of tax |  |  |  |  |  |  |  |  |  |  |  |  | 3,535 |  | 931 | (3,087)
Total |  |  |  |  |  |  |  |  |  |  |  |  | $ (133,982) |  | $ 218,975 | $ 224,373
[1] | All amounts are net of tax.
[2] | The $22,245 pretax amount reclassified from accumulated other comprehensive income is included in net realized investment gains and losses and the $7,786 related tax expense (benefit) is included in income tax expense in the Consolidated Statement of Operations for the year ended December 31, 2013.

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