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Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Schedule of Components of Comprehensive Income-Gross and Net of Tax |
Second Quarter 2014 |  |  |  |  |  |
($ in thousands) |  | Gross |  | Tax |  | Net
Net income |  | $ | 39,521 |  |  | 10,180 |  |  | 29,341 |
Components of OCI: |  |  |  |  |  |  |  |  |
Unrealized gains on investment securities: |  |  |  |  |  |  |  |  |
Unrealized holding gains during the period |  | 45,122 |  |  | 15,793 |  |  | 29,329 |
Amounts reclassified into net income: |  |  |  |  |  |
HTM securities |  | (221 | ) |  | (77 | ) |  | (144 | )
Non-credit OTTI |  | 469 |  |  | 164 |  |  | 305 |
Realized gains on AFS securities |  | (5,008 | ) |  | (1,753 | ) |  | (3,255 | )
Net unrealized gains |  | 40,362 |  |  | 14,127 |  |  | 26,235 |
Defined benefit pension and post-retirement plans: |  |  |  |  |  |  |  |  |
Amounts reclassified into net income: |  |  |  |  |  |  |  |  |
Net actuarial loss |  | 381 |  |  | 133 |  |  | 248 |
Defined benefit pension and post-retirement plans |  | 381 |  |  | 133 |  |  | 248 |
Other comprehensive income |  | 40,743 |  |  | 14,260 |  |  | 26,483 |
Comprehensive income |  | $ | 80,264 |  |  | 24,440 |  |  | 55,824 |
Second Quarter 2013 |  |  |  |  |  |
($ in thousands) |  | Gross |  | Tax |  | Net
Net income |  | $ | 36,201 |  |  | 9,079 |  |  | 27,122 |
Components of OCI: |  |  |  |  |  |  |  |  |
Unrealized losses on investment securities: |  |  |  |  |  |  |  |  |
Unrealized holding losses during the period |  | (91,314 | ) |  | (31,961 | ) |  | (59,353 | )
Non-credit OTTI recognized in OCI |  | 47 |  |  | 16 |  |  | 31 |
Amounts reclassified into net income: |  |  |  |  |  |
HTM securities |  | (614 | ) |  | (215 | ) |  | (399 | )
Non-credit OTTI |  | 6 |  |  | 3 |  |  | 3 |
Realized gains on AFS securities |  | (5,288 | ) |  | (1,850 | ) |  | (3,438 | )
Net unrealized losses |  | (97,163 | ) |  | (34,007 | ) |  | (63,156 | )
Defined benefit pension and post-retirement plans: |  |  |  |  |  |  |  |  |
Amounts reclassified into net income: |  |  |  |  |  |  |  |  |
Net actuarial loss |  | 789 |  |  | 276 |  |  | 513 |
Defined benefit pension and post-retirement plans |  | 789 |  |  | 276 |  |  | 513 |
Other comprehensive loss |  | (96,374 | ) |  | (33,731 | ) |  | (62,643 | )
Comprehensive loss |  | $ | (60,173 | ) |  | (24,652 | ) |  | (35,521 | )
Six Months 2014 |  |  |  |  |  |
($ in thousands) |  | Gross |  | Tax |  | Net
Net income |  | $ | 64,605 |  |  | 17,290 |  |  | 47,315 |
Components of OCI: |  |  |  |  |  |  |  |  |
Unrealized gains on investment securities: |  |  |  |  |  |  |  |  |
Unrealized holding gains during the period |  | 78,086 |  |  | 27,331 |  |  | 50,755 |
Amounts reclassified into net income: |  |  |  |  |  |
HTM securities |  | (677 | ) |  | (237 | ) |  | (440 | )
Non-credit OTTI |  | 469 |  |  | 164 |  |  | 305 |
Realized gains on AFS securities |  | (12,237 | ) |  | (4,283 | ) |  | (7,954 | )
Net unrealized gains |  | 65,641 |  |  | 22,975 |  |  | 42,666 |
Defined benefit pension and post-retirement plans: |  |  |  |  |  |  |  |  |
Amounts reclassified into net income: |  |  |  |  |  |  |  |  |
Net actuarial loss |  | 761 |  |  | 266 |  |  | 495 |
Defined benefit pension and post-retirement plans |  | 761 |  |  | 266 |  |  | 495 |
Other comprehensive income |  | 66,402 |  |  | 23,241 |  |  | 43,161 |
Comprehensive income |  | $ | 131,007 |  |  | 40,531 |  |  | 90,476 |
Six Months 2013 |  |  |  |  |  |
($ in thousands) |  | Gross |  | Tax |  | Net
Net income |  | $ | 63,534 |  |  | 15,104 |  |  | 48,430 |
Components of OCI: |  |  |  |  |  |  |  |  |
Unrealized losses on investment securities: |  |  |  |  |  |  |  |  |
Unrealized holding losses during the period |  | (87,630 | ) |  | (30,671 | ) |  | (56,959 | )
Non-credit OTTI recognized in OCI |  | 77 |  |  | 27 |  |  | 50 |
Amounts reclassified into net income: |  |  |  |  |  |
HTM securities |  | (1,331 | ) |  | (466 | ) |  | (865 | )
Non-credit OTTI |  | 13 |  |  | 5 |  |  | 8 |
Realized gains on AFS securities |  | (11,264 | ) |  | (3,942 | ) |  | (7,322 | )
Net unrealized losses |  | (100,135 | ) |  | (35,047 | ) |  | (65,088 | )
Defined benefit pension and post-retirement plans: |  |  |  |  |  |  |  |  |
Net actuarial gains |  | 44,000 |  |  | 15,400 |  |  | 28,600 |
Amounts reclassified into net income: |  |  |  |  |  |  |  |  |
Net actuarial loss |  | 2,629 |  |  | 920 |  |  | 1,709 |
Prior service cost |  | 10 |  |  | 4 |  |  | 6 |
Curtailment expense |  | 16 |  |  | 5 |  |  | 11 |
Defined benefit pension and post-retirement plans |  | 46,655 |  |  | 16,329 |  |  | 30,326 |
Other comprehensive loss |  | (53,480 | ) |  | (18,718 | ) |  | (34,762 | )
Comprehensive income |  | $ | 10,054 |  |  | (3,614 | ) |  | 13,668 |
Schedule of Components of Accumulated Other Comprehensive Income |
June 30, 2014 |  | Net Unrealized (Loss) Gain on Investment Securities |  |  |  |
($ in thousands) |  | OTTI Related |  | HTM Related |  | All Other |  | Investments Subtotal |  | Defined Benefit Pension and Post-Retirement Plans |  | Total AOCI
Balance, December 31, 2013 |  | $ | (1,599 | ) |  | 1,467 |  |  | 51,635 |  |  | 51,503 |  |  | (26,652 | ) |  | 24,851 |
OCI before reclassifications |  | — |  |  | — |  |  | 50,755 |  |  | 50,755 |  |  | — |  |  | 50,755 |
Amounts reclassified from AOCI |  | 305 |  |  | (440 | ) |  | (7,954 | ) |  | (8,089 | ) |  | 495 |  |  | (7,594 | )
Net current period OCI |  | 305 |  |  | (440 | ) |  | 42,801 |  |  | 42,666 |  |  | 495 |  |  | 43,161 |
Balance, June 30, 2014 |  | $ | (1,294 | ) |  | 1,027 |  |  | 94,436 |  |  | 94,169 |  |  | (26,157 | ) |  | 68,012 |
Schedule of Reclassifications Out Of Accumulated Other Comprehensive Income |
| Quarter ended June 30, |  | Six Months ended June 30, |
($ in thousands) | 2014 |  | 2013 |  | 2014 |  | 2013 | Affected Line Item in the Unaudited Consolidated Statement of Income
OTTI related |  |  |  |  |  |  |  |
Amortization of non-credit OTTI losses on HTM securities | — |  |  | 6 |  |  | — |  |  | 13 |  | Net investment income earned
Realized loss on disposal of non-credit OTTI securities | 469 |  |  | — |  |  | 469 |  |  | — |  | Net realized gains
| 469 |  |  | 6 |  |  | 469 |  |  | 13 |  | Income from continuing operations, before federal income tax
| (164 | ) |  | (3 | ) |  | (164 | ) |  | (5 | ) | Total federal income tax expense
| 305 |  |  | 3 |  |  | 305 |  |  | 8 |  | Net income
HTM related |  |  |  |  |  |  |  |
Unrealized losses (gains) on HTM disposals | 51 |  |  | (70 | ) |  | 75 |  |  | (151 | ) | Net realized gains
Amortization of net unrealized gains on HTM securities | (272 | ) |  | (544 | ) |  | (752 | ) |  | (1,180 | ) | Net investment income earned
| (221 | ) |  | (614 | ) |  | (677 | ) |  | (1,331 | ) | Income from continuing operations, before federal income tax
| 77 |  |  | 215 |  |  | 237 |  |  | 466 |  | Total federal income tax expense
| (144 | ) |  | (399 | ) |  | (440 | ) |  | (865 | ) | Net income
Realized gains and losses on AFS and OTTI |  |  |  |  |  |  |  |
Realized gains on AFS disposals and OTTI | (5,008 | ) |  | (5,288 | ) |  | (12,237 | ) |  | (11,264 | ) | Net realized gains
| (5,008 | ) |  | (5,288 | ) |  | (12,237 | ) |  | (11,264 | ) | Income from continuing operations, before federal income tax
| 1,753 |  |  | 1,850 |  |  | 4,283 |  |  | 3,942 |  | Total federal income tax expense
| (3,255 | ) |  | (3,438 | ) |  | (7,954 | ) |  | (7,322 | ) | Net income
Defined benefit pension and post-retirement life plans |  |  |  |  |  |  |  |
Net actuarial loss | 88 |  |  | 158 |  |  | 175 |  |  | 558 |  | Loss and loss expense incurred
| 293 |  |  | 631 |  |  | 586 |  |  | 2,071 |  | Policy acquisition costs
| 381 |  |  | 789 |  |  | 761 |  |  | 2,629 |  | Income from continuing operations, before federal income tax
Prior service cost | — |  |  | — |  |  | — |  |  | 7 |  | Loss and loss adjustment expenses
| — |  |  | — |  |  | — |  |  | 3 |  | Policy acquisition costs
| — |  |  | — |  |  | — |  |  | 10 |  | Income from continuing operations, before federal income tax
Curtailment expense | — |  |  | — |  |  | — |  |  | 16 |  | Policy acquisition costs
| — |  |  | — |  |  | — |  |  | 16 |  | Income from continuing operations, before federal income tax
Total defined benefit pension and post-retirement life | 381 |  |  | 789 |  |  | 761 |  |  | 2,655 |  | Income from continuing operations, before federal income tax
| (133 | ) |  | (276 | ) |  | (266 | ) |  | (929 | ) | Total federal income tax expense
| 248 |  |  | 513 |  |  | 495 |  |  | 1,726 |  | Net income
Total reclassifications for the period | (2,846 | ) |  | (3,321 | ) |  | (7,594 | ) |  | (6,453 | ) | Net income

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