Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue:
Net premiums earned	$ 244,570	$ 214,738	$ 181,300
Net investment income	10,729	11,335	13,971
Commissions and other income	6,098	6,911	6,562
Net realized gains (losses) on investments, excluding impairment losses	(15,897)	16,527	33,662
Total other-than-temporary impairment losses on investments	(1,987)	(42)	(2,846)
Portion of other-than-temporary impairment losses recognized in other comprehensive income	81	0	0
Net realized gains (losses) on investments	(17,803)	16,485	30,816
Total revenue	243,594	249,469	232,649
Expenses:
Losses and loss expenses incurred	215,555	145,952	99,351
Other operating expenses	73,328	68,704	69,032
Total expenses	288,883	214,656	168,383
Income (loss) before federal income taxes	(45,289)	34,813	64,266
Federal income taxes (benefits)	(17,114)	9,798	19,464
Net income (loss)	$ (28,175)	$ 25,015	$ 44,802
Per share data:
Diluted earnings (losses) (in dollars per share)	$ (1.90)	$ 1.69	$ 3.04
Basic earnings (losses) (in dollars per share)	$ (1.90)	$ 1.69	$ 3.04
Cash dividends paid (in dollars per share)	$ 1.00	$ 2.25	$ 1.00