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Federal Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Reconciliation of Federal Income Tax on Income at the Corporate Rate to the Effective Tax Rate

($ in thousands)		2017				2016			2015
Tax at statutory rate of 35%		$	91,689			76,984			81,442
Tax-advantaged interest		(11,510		)		(12,126	)		(13,164	)
Dividends received deduction		(1,961		)		(1,114	)		(1,817	)
Stock based compensation		(4,281		)		—			—
Tax reform rate change		20,205				—			—
Other		(1,000		)		(2,284	)		370
Federal income tax expense from continuing operations		$	93,142			61,460			66,831

Schedule of Deferred Tax Assets and Liabilities

($ in thousands)		2017				2016
Deferred tax assets:
Net loss reserve discounting		$	38,771			70,065
Net unearned premiums		50,267				78,201
Employee benefits		8,606				17,881
Long-term incentive compensation plans		12,221				17,750
Temporary investment write-downs		1,044				2,475
Other investment related items, net		—				1,484
Net operating loss		54				771
Other		5,784				8,344
Total deferred tax assets		116,747				196,971
Deferred tax liabilities:
Deferred policy acquisition costs		47,484				75,310
Unrealized gains on investment securities		26,183				22,681
Other investment-related items, net		2,500				—
Accelerated depreciation and amortization		8,590				14,140
Total deferred tax liabilities		84,757				112,131
Net deferred federal income tax asset		$	31,990			84,840

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- References

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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

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- Definition

Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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