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Basis of Presentation (Tables) | 6 Months Ended
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Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Investment Contract And Life Policy Reserves | This table summarizes the Company’s investment contract and life policy reserves.
($ in thousands) |  | June 30, 2018 |  | December 31, 2017
Investment contract reserves |  | $ | 4,498,302 |  |  | $ | 4,452,972 |
Life policy reserves |  | 1,135,867 |  |  | 1,120,763 |
Total |  | $ | 5,634,169 |  |  | $ | 5,573,735 |
Accumulated Other Comprehensive Income (Loss) | The following tables reconcile these components.
($ in thousands) |  | Net Unrealized Investment Gains and Losses on Securities (1)(2) |  | Defined Benefit Plans (1) |  | Total (1)
Beginning balance, April 1, 2018 |  | $ | 178,040 |  |  | $ | (13,217 | ) |  | $ | 164,823 |
Other comprehensive income (loss) before reclassifications |  | (52,873 | ) |  | — |  |  | (52,873 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  | 429 |  |  | — |  |  | 429 |
Cumulative effect of change in accounting principle (3) |  | — |  |  | — |  |  | — |
Net current period other comprehensive income (loss) |  | (52,444 | ) |  | — |  |  | (52,444 | )
Ending balance, June 30, 2018 |  | $ | 125,596 |  |  | $ | (13,217 | ) |  | $ | 112,379 |
Beginning balance, January 1, 2018 |  | $ | 300,177 |  |  | $ | (13,217 | ) |  | $ | 286,960 |
Other comprehensive income (loss) before reclassifications |  | (162,412 | ) |  | — |  |  | (162,412 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  | 2,872 |  |  | — |  |  | 2,872 |
Cumulative effect of change in accounting principle (3) |  | (15,041 | ) |  | — |  |  | (15,041 | )
Net current period other comprehensive income (loss) |  | (174,581 | ) |  | — |  |  | (174,581 | )
Ending balance, June 30, 2018 |  | $ | 125,596 |  |  | $ | (13,217 | ) |  | $ | 112,379 |
________________
(1) | All amounts are net of tax.
(2) | The pretax amounts reclassified from AOCI, $(544) thousand and $(3,636) thousand, are included in Net investment gains (losses) and the related income tax expenses, $(115) thousand and $(764) thousand, are included in Income tax expense in the Consolidated Statements of Operations for the three and six month periods ended June 30, 2018, respectively.
(3) | The Company adopted guidance on January 1, 2018 that resulted in reclassifying $15,041 thousand of after tax net unrealized gains on equity securities from AOCI to Retained earnings.
($ in thousands) |  | Net Unrealized Investment Gains and Losses on Securities (1)(2) |  | Defined Benefit Plans (1) |  | Total (1)
Beginning balance, April 1, 2017 |  | $ | 198,271 |  |  | $ | (11,817 | ) |  | $ | 186,454 |
Other comprehensive income (loss) before reclassifications |  | 46,303 |  |  | — |  |  | 46,303 |
Amounts reclassified from accumulated other comprehensive income (loss) |  | (1,064 | ) |  | — |  |  | (1,064 | )
Net current period other comprehensive income |  | 45,239 |  |  | — |  |  | 45,239 |
Ending balance, June 30, 2017 |  | $ | 243,510 |  |  | $ | (11,817 | ) |  | $ | 231,693 |
Beginning balance, January 1, 2017 |  | $ | 175,738 |  |  | $ | (11,817 | ) |  | $ | 163,921 |
Other comprehensive income (loss) before reclassifications |  | 68,633 |  |  | — |  |  | 68,633 |
Amounts reclassified from accumulated other comprehensive income (loss) |  | (861 | ) |  | — |  |  | (861 | )
Net current period other comprehensive income |  | 67,772 |  |  | — |  |  | 67,772 |
Ending balance, June 30, 2017 |  | $ | 243,510 |  |  | $ | (11,817 | ) |  | $ | 231,693 |
________________
(1) | All amounts are net of tax.
(2) | The pretax amounts reclassified from AOCI, $1,638 thousand and $1,325 thousand, are included in Net investment gains (losses) and the related income tax expenses, $574 thousand and $464 thousand, are included in Income tax expense (benefit) in the Consolidated Statements of Operations for the three and six month periods ended June 30, 2017, respectively.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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