Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Summarized financial information for these segments

Summarized financial information for these segments is as follows: 

($ in thousands)	Years Ended December 31,
	2017			2016			2015
Insurance premiums and contract charges earned
Property and Casualty	$	648,263		$	620,514		$	595,958
Retirement	28,003			24,937			25,378
Life	118,437			113,695			110,544
Total	$	794,703		$	759,146		$	731,880
Net investment income
Property and Casualty	$	36,178		$	38,998		$	33,461
Retirement	261,994			249,410			228,378
Life	76,195			73,567			71,614
Corporate and Other	78			66			38
Intersegment eliminations	(815		)	(855		)	(891		)
Total	$	373,630		$	361,186		$	332,600
Net income (loss)
Property and Casualty	$	17,790		$	25,644		$	40,043
Retirement	88,473			50,674			43,384
Life	77,595			16,559			14,982
Corporate and Other	(14,399		)	(9,112		)	(4,927		)
Total	$	169,459		$	83,765		$	93,482

Additional significant financial information for these segments

($ in thousands)	December 31,
	2017			2016			2015
Assets
Property and Casualty	$	1,217,394		$	1,110,958		$	1,098,415
Retirement	8,063,912			7,449,777			7,001,411
Life	1,815,732			1,912,771			1,862,719
Corporate and Other	143,784			140,104			131,635
Intersegment eliminations	(42,482		)	(36,786		)	(37,208		)
Total	$	11,198,340		$	10,576,824		$	10,056,972

Additional significant financial information for these segments is as follows:

($ in thousands)	Years Ended December 31,
	2017			2016			2015
DAC amortization expense
Property and Casualty	$	76,967		$	74,950		$	73,173
Retirement	17,759			14,635			18,155
Life	7,459			7,147			7,591
Total	$	102,185		$	96,732		$	98,919
Income tax expense (benefit)
Property and Casualty	$	(3,279	)	$	4,627		$	11,274
Retirement	(19,498		)	20,334			19,873
Life	(51,876		)	9,775			7,951
Corporate and Other	(6,119		)	(4,269		)	(3,128		)
Total	$	(80,772	)	$	30,467		$	35,970