CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Gross written premiums	$ 298,742	$ 255,318	$ 964,878	$ 830,315
Revenues:
Net written premiums	188,046	175,357	621,343	551,796
Change in unearned premiums	13,216	(1,724)	(40,945)	(51,908)
Net earned premiums	201,262	173,633	580,398	499,888
Net investment income	13,597	16,259	40,632	51,072
Total other-than-temporary impairment losses		(1,241)	(693)	(2,338)
Portion of loss recognized in other comprehensive income (pretax)		618	43	941
Net other-than-temporary impairment losses recognized in earnings		(623)	(650)	(1,397)
Net realized gains (losses)	4,761	3,238	10,820	4,856
Other income (expense)	789	(921)	2,087	643
Total revenues	220,409	191,586	633,287	555,062
Expenses:
Net losses and loss adjustment expenses	128,850	110,242	370,242	340,893
Commission expenses	31,258	25,934	90,211	80,164
Other operating expenses	40,112	34,989	116,238	107,341
Interest expense	2,049	2,047	6,147	6,140
Total expenses	202,269	173,212	582,838	534,538
Income (loss) before income taxes	18,140	18,374	50,449	20,524
Income tax expense (benefit)	5,225	4,476	14,731	5,015
Net income (loss)	$ 12,915	$ 13,898	$ 35,718	$ 15,509
Net income (loss) per common share:
Basic	$ 0.92	$ 0.94	$ 2.55	$ 1.02
Diluted	$ 0.90	$ 0.92	$ 2.51	$ 1.00
Average common shares outstanding:
Basic	14,026,855	14,796,309	14,004,302	15,243,603
Diluted	14,272,477	15,104,424	14,255,301	15,569,370