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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Summary of income tax assets and liabilities | The income tax assets and liabilities included in Other assets and Other liabilities, respectively, in the Consolidated Balance Sheets were as follows:
($ in thousands) |  | December 31,
|  | 2018 |  | 2017
Income tax (asset) liability |  |  |  |  |  |
Current |  | $ | (20,793 | ) |  | $ | (16,266 | )
Deferred |  | 103,686 |  |  | 157,775 |
Summary of deferred tax assets and liabilities | The "temporary differences" that gave rise to the deferred tax balances were as follows:
($ in thousands) |  | December 31,
|  | 2018 |  | 2017
Deferred tax assets |  |  |  |  |  |
Unearned premium reserve reduction |  | $ | 12,112 |  |  | $ | 11,472 |
Compensation accruals |  | 6,866 |  |  | 8,359 |
Impaired securities |  | 1,295 |  |  | 2,240 |
Other comprehensive income - net funded status of benefit plans |  | 3,254 |  |  | 3,526 |
Discounting of unpaid claims and claim expense tax reserves |  | 2,772 |  |  | 3,889 |
Postretirement benefits other than pensions |  | 302 |  |  | 321 |
Charitable contributions carryforwards |  | 89 |  |  | 62 |
Net operating loss carryforwards |  | 10,969 |  |  | 148 |
Total gross deferred tax assets |  | 37,659 |  |  | 30,017 |
Deferred tax liabilities |  |  |  |  |  |
Other comprehensive income - net unrealized gains on securities |  | 32,897 |  |  | 95,583 |
Deferred policy acquisition costs |  | 60,330 |  |  | 52,438 |
Life insurance future policy benefit reserve |  | 9,304 |  |  | 102 |
Life insurance future policy benefit reserve (transitional rule) |  | 14,910 |  |  | 23,869 |
Discounting of unpaid claims and claim expense tax reserves (transitional rule) |  | 1,203 |  |  | 2,513 |
Investment related adjustments |  | 17,531 |  |  | 8,661 |
Intangibles |  | 2,557 |  |  | 2,557 |
Other, net |  | 2,613 |  |  | 2,069 |
Total gross deferred tax liabilities |  | 141,345 |  |  | 187,792 |
Net deferred tax liability |  | $ | 103,686 |  |  | $ | 157,775 |
Summary of Loss Carryforwards and Credits | At December 31, 2018, the Company had available the following carryforwards or credits.
($ in thousands) |  | Pretax Amount |  | Expiration Years
Operating loss carryforwards |  | $ | 52,232 |  |  | 2037 - 2038
Charitable contributions carryforwards |  | 424 |  |  | 2021 - 2023
Income Taxes Expenses | The components of the provision for income tax expense were as follows:
($ in thousands) |  | Years Ended December 31,
|  | 2018 |  | 2017 |  | 2016
Current |  | $ | 4,152 |  |  | $ | 3,813 |  |  | $ | 26,359 |
Deferred |  | (2,958 | ) |  | (84,585 | ) |  | 4,108 |
Total income tax expense (benefit) |  | $ | 1,194 |  |  | $ | (80,772 | ) |  | $ | 30,467 |
Income Taxes Expenses Reconciliation | Income tax expense for the following periods differed from the expected tax computed by applying the federal corporate tax rate of 21% for 2018 and 35% for 2017 and 2016 to income before income taxes as follows:
($ in thousands) |  | Years Ended December 31,
|  | 2018 |  | 2017 |  | 2016
Expected federal tax on income |  | $ | 4,103 |  |  | $ | 31,041 |  |  | $ | 39,981 |
Add (deduct) tax effects of: |  |  |  |  |  |
Tax-exempt interest |  | (3,726 | ) |  | (5,335 | ) |  | (5,789 | )
Dividend received deduction |  | (412 | ) |  | (4,810 | ) |  | (5,751 | )
Tax Act DTL re-measurement |  | — |  |  | (98,988 | ) |  | — |
Employee share-based compensation |  | (1,134 | ) |  | (3,258 | ) |  | 127 |
Compensation deduction limitation |  | 1,754 |  |  | 326 |  |  | — |
Prior year adjustments |  | 300 |  |  | (293 | ) |  | 91 |
Other, net |  | 309 |  |  | 545 |  |  | 1,808 |
Income tax expense (benefit) provided on income |  | $ | 1,194 |  |  | $ | (80,772 | ) |  | $ | 30,467 |
Unrecognized tax benefits, excluding interest and penalties | A reconciliation of the beginning and ending amounts of unrecognized tax benefits, excluding interest and penalties, is as follows:
($ in thousands) |  | Years Ended December 31,
|  | 2018 |  | 2017 |  | 2016
Balance as of the beginning of the year |  | $ | 1,790 |  |  | $ | 1,594 |  |  | $ | 1,039 |
Increases related to prior year tax positions |  | — |  |  | 101 |  |  | 348 |
Decreases related to prior year tax positions |  | (152 | ) |  | — |  |  | — |
Increases related to current year tax positions |  | 96 |  |  | 422 |  |  | 283 |
Settlements |  | — |  |  | — |  |  | — |
Lapse of statute |  | — |  |  | (327 | ) |  | (76 | )
Balance as of the end of the year |  | $ | 1,734 |  |  | $ | 1,790 |  |  | $ | 1,594 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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