Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues [Abstract]
Net premiums earned	$ 170,090	$ 152,210	$ 331,593	$ 266,414
Investment income, net of investment expenses	28,749	27,741	57,895	54,804
Net realized investment gains
Other-than-temporary impairment charges	(4)	0	(4)	0
All other net realized gains	568	1,124	3,362	3,777
Net realized investment gains	564	1,124	3,358	3,777
Other income	243	729	499	885
Total Revenue	199,646	181,804	393,345	325,880
Benefits, Losses and Expenses
Losses and loss settlement expenses	106,766	135,811	198,250	211,993
Future policy benefits	8,356	7,880	18,494	16,062
Amortization of deferred policy acquisition costs	34,179	43,732	68,730	69,778
Other underwriting expenses	20,541	14,720	42,535	30,777
Interest on policyholders' accounts	10,627	10,657	21,283	21,327
Total expenses	180,469	212,800	349,292	349,937
Income (loss) before income taxes	19,177	(30,996)	44,053	(24,057)
Federal income tax expense (benefit)	4,461	(13,082)	10,153	(11,953)
Net Income (loss)	14,716	(17,914)	33,900	(12,104)
Other comprehensive income
Change in net unrealized appreciation on investments	8,667	21,439	22,270	22,939
Adjustment for net realized gains included in income	(564)	(1,124)	(3,358)	(3,777)
Adjustment for employee benefit costs included in expense	1,732	732	2,375	1,286
Other comprehensive income before tax	9,835	21,047	21,287	20,448
Income tax effect of components of other comprehensive income	(3,442)	(7,366)	(7,451)	(7,157)
Other comprehensive income after tax	6,393	13,681	13,836	13,291
Comprehensive income (loss)	$ 21,109	$ (4,233)	$ 47,736	$ 1,187
Weighted average common shares outstanding	25,476,220	26,101,842	25,491,091	26,148,438
Basic earnings (loss) per common share	$ 0.58	$ (0.69)	$ 1.33	$ (0.46)
Diluted earnings (loss) per common share	$ 0.58	$ (0.69)	$ 1.33	$ (0.46)
Cash dividends declared per common share	$ 0.15	$ 0.15	$ 0.30	$ 0.30