Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues
Net premiums earned	$ 260,069	$ 239,421	$ 754,854	$ 681,817
Investment income, net of investment expenses	26,690	24,050	73,421	74,205
Net realized investment gains (includes reclassifications for net unrealized investment gains on available-for-sale securities of $2,320 and $4,666 in 2016 and $1,825 and $4,715 in 2015; previously included in accumulated other comprehensive income)	2,590	966	6,241	2,622
Other income	145	123	436	318
Total revenues	289,494	264,560	834,952	758,962
Benefits, Losses and Expenses
Losses and loss settlement expenses	176,555	144,526	499,095	421,297
Increase in liability for future policy benefits	14,091	12,784	42,645	32,503
Amortization of deferred policy acquisition costs	54,116	48,697	156,932	135,526
Other underwriting expenses (includes reclassifications for employee benefit costs of $1,371 and $4,113 in 2016 and $1,867 and $5,601 in 2015; previously included in accumulated other comprehensive income)	24,574	26,161	76,099	73,241
Interest on policyholders’ accounts	4,983	5,568	15,368	18,207
Total benefits, losses and expenses	274,319	237,736	790,139	680,774
Income before income taxes	15,175	26,824	44,813	78,188
Federal income tax expense (benefit) (includes reclassifications of ($332) and ($194) in 2016 and $15 and $310 in 2015; previously included in accumulated other comprehensive income)	2,807	7,290	6,904	19,957
Net income	12,368	19,534	37,909	58,231
Other comprehensive income (loss)
Change in net unrealized appreciation on investments	(9,440)	(2,008)	83,768	(25,131)
Change in liability for underfunded employee benefit plans	0	0	0	0
Other comprehensive income (loss), before tax and reclassification adjustments	(9,440)	(2,008)	83,768	(25,131)
Income tax effect	3,304	703	(29,320)	8,795
Other comprehensive income (loss), after tax, before reclassification adjustments	(6,136)	(1,305)	54,448	(16,336)
Reclassification adjustment for net realized investment gains included in income	(2,320)	(1,825)	(4,666)	(4,715)
Reclassification adjustment for employee benefit costs included in expense	1,371	1,867	4,113	5,601
Total reclassification adjustments, before tax	(949)	42	(553)	886
Income tax effect	332	(15)	194	(310)
Total reclassification adjustments, after tax	(617)	27	(359)	576
Comprehensive income	$ 5,615	$ 18,256	$ 91,998	$ 42,471
Weighted average common shares outstanding (in shares)	25,389,633	25,067,080	25,322,427	25,027,382
Basic earnings per common share (in dollars per share)	$ 0.49	$ 0.78	$ 1.50	$ 2.33
Diluted earnings per common share (in dollars per share)	$ 0.48	$ 0.77	$ 1.47	$ 2.31