Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
Net premiums earned	$ 229,225	$ 201,827	$ 442,396	$ 395,168
Investment income, net of investment expenses	25,792	27,603	50,155	54,365
Net realized investment gains (includes reclassifications for net unrealized investment gains on available-for-sale securities of $995 and $2,890 in 2015 and $1,606 and $3,088 in 2014; previously included in accumulated other comprehensive income (loss))	769	2,708	1,656	4,902
Other income	132	535	195	1,142
Total revenues	255,918	232,673	494,402	455,577
Benefits, Losses and Expenses
Losses and loss settlement expenses	150,362	142,716	276,771	267,953
Increase in liability for future policy benefits	12,096	8,077	19,719	15,898
Amortization of deferred policy acquisition costs	44,357	40,196	86,829	79,730
Other underwriting expenses (includes reclassifications for employee benefit costs of $1,867 and $3,734 in 2015 and $768 and $1,536 in 2014; previously included in accumulated other comprehensive income (loss))	23,546	20,776	47,080	47,204
Interest on policyholders’ accounts	6,024	7,852	12,639	15,839
Total benefits, losses and expenses	236,385	219,617	443,038	426,624
Income before income taxes	19,533	13,056	51,364	28,953
Federal income tax expense (includes reclassifications of ($305) and ($295) in 2015 and $293 and $543 in 2014; previously included in accumulated other comprehensive income (loss))	4,515	2,371	12,667	4,937
Net income	15,018	10,685	38,697	24,016
Other comprehensive income (loss)
Change in net unrealized appreciation on investments	(36,237)	27,108	(23,123)	51,177
Change in liability for underfunded employee benefit plans	0	0	0	0
Other comprehensive income (loss), before tax and reclassification adjustments	(36,237)	27,108	(23,123)	51,177
Income tax effect	12,682	(9,488)	8,092	(17,913)
Other comprehensive income (loss), after tax, before reclassification adjustments	(23,555)	17,620	(15,031)	33,264
Reclassification adjustment for net realized investment gains included in income	(995)	(1,606)	(2,890)	(3,088)
Reclassification adjustment for employee benefit costs included in expense	1,867	768	3,734	1,536
Total reclassification adjustments, before tax	872	(838)	844	(1,552)
Income tax effect	(305)	293	(295)	543
Total reclassification adjustments, after tax	567	(545)	549	(1,009)
Comprehensive income (loss)	$ (7,970)	$ 27,760	$ 24,215	$ 56,271
Weighted average common shares outstanding (in shares)	25,023,753	25,330,066	25,007,204	25,351,056
Basic earnings per common share (in dollars per share)	$ 0.60	$ 0.42	$ 1.55	$ 0.95
Diluted earnings per common share (in dollars per share)	$ 0.59	$ 0.42	$ 1.54	$ 0.94