Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Net premiums earned	$ 259,563	$ 253,487	$ 513,435	$ 494,785
Investment income, net of investment expenses	24,610	24,507	49,645	46,731
Net realized investment gains (includes reclassifications for net unrealized investment gains on available-for-sale securities of $1,975 and $5,380 in 2017 and $700 and $2,346 in 2016; previously included in accumulated other comprehensive income)	2,680	1,596	6,634	3,651
Other income	126	183	324	291
Total revenues	286,979	279,773	570,038	545,458
Benefits, Losses and Expenses
Losses and loss settlement expenses	197,698	180,412	365,321	322,540
Increase in liability for future policy benefits	5,281	16,002	13,860	28,554
Amortization of deferred policy acquisition costs	53,093	52,585	105,227	102,816
Other underwriting expenses (includes reclassifications for employee benefit costs of $1,352 and $2,704 in 2017 and $1,371 and $2,742 in 2016; previously included in accumulated other comprehensive income)	26,201	24,772	51,091	51,525
Interest on policyholders’ accounts	4,651	5,138	9,395	10,385
Total benefits, losses and expenses	286,924	278,909	544,894	515,820
Income before income taxes	55	864	25,144	29,638
Federal income tax expense (benefit) (includes reclassifications of $219 and $937 in 2017 and ($234) and ($138) in 2016; previously included in accumulated other comprehensive income)	(2,903)	(2,250)	2,250	4,097
Net income	2,958	3,114	22,894	25,541
Other comprehensive income
Change in net unrealized appreciation on investments	30,653	49,332	45,619	93,208
Change in liability for underfunded employee benefit plans	0	0	0	0
Other comprehensive income , before tax and reclassification adjustments	30,653	49,332	45,619	93,208
Income tax effect	(10,729)	(17,267)	(15,967)	(32,624)
Other comprehensive income, after tax, before reclassification adjustments	19,924	32,065	29,652	60,584
Reclassification adjustment for net realized investment gains included in income	(1,975)	(700)	(5,380)	(2,346)
Reclassification adjustment for employee benefit costs included in expense	1,352	1,371	2,704	2,742
Total reclassification adjustments, before tax	(623)	671	(2,676)	396
Income tax effect	219	(234)	937	(138)
Total reclassification adjustments, after tax	(404)	437	(1,739)	258
Comprehensive income	$ 22,478	$ 35,616	$ 50,807	$ 86,383
Weighted average common shares outstanding (in shares)	25,133,035	25,366,283	25,288,068	25,288,086
Basic earnings per common share (in dollars per share)	$ 0.12	$ 0.12	$ 0.91	$ 1.01
Diluted earnings per common share (in dollars per share)	$ 0.12	$ 0.12	$ 0.89	$ 1.00