Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues
Net premiums earned	$ 253,872	$ 241,298
Investment income, net of investment expenses	25,035	22,224
Net realized investment gains (includes reclassifications for net unrealized investment gains on available-for-sale securities of $3,405 in 2017 and $1,646 in 2016; previously included in accumulated other comprehensive income)	3,954	2,055
Other income	198	108
Total revenues	283,059	265,685
Benefits, Losses and Expenses
Losses and loss settlement expenses	167,623	142,128
Increase in liability for future policy benefits	8,579	12,552
Amortization of deferred policy acquisition costs	52,134	50,231
Other underwriting expenses (includes reclassifications for employee benefit costs of $1,352 in 2017 and $1,371 in 2016; previously included in accumulated other comprehensive income)	24,890	26,753
Interest on policyholders’ accounts	4,744	5,247
Total benefits, losses and expenses	257,970	236,911
Income before income taxes	25,089	28,774
Federal income tax expense (includes reclassifications of ($718) in 2017 and ($96) in 2016; previously included in accumulated other comprehensive income)	5,153	6,347
Net income	19,936	22,427
Other comprehensive income
Change in net unrealized appreciation on investments	14,966	43,876
Change in liability for underfunded employee benefit plans	0	0
Other comprehensive income , before tax and reclassification adjustments	14,966	43,876
Income tax effect	(5,238)	(15,357)
Other comprehensive income, after tax, before reclassification adjustments	9,728	28,519
Reclassification adjustment for net realized investment gains included in income	(3,405)	(1,646)
Reclassification adjustment for employee benefit costs included in expense	1,352	1,371
Total reclassification adjustments, before tax	(2,053)	(275)
Income tax effect	718	96
Total reclassification adjustments, after tax	(1,335)	(179)
Comprehensive income	$ 28,329	$ 50,767
Weighted average common shares outstanding (in shares)	25,443,101	25,209,888
Basic earnings per common share (in dollars per share)	$ 0.78	$ 0.89
Diluted earnings per common share (in dollars per share)	$ 0.77	$ 0.88