CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Gross written premiums	$ 343,149	$ 296,283
Revenues:
Net written premiums	243,045	193,076
Change in unearned premiums	(59,926)	(40,598)
Net earned premiums	183,119	152,478
Net investment income	11,258	17,384
Total other-than-temporary impairment losses	(198)	(263)
Portion of loss recognized in other comprehensive income (pretax)	44	22
Net other-than-temporary impairment losses recognized in earnings	(154)	(241)
Net realized gains (losses)	1,842	(1,389)
Other income (expense)	911	991
Total revenues	196,976	169,223
Expenses:
Net losses and loss adjustment expenses	117,985	116,788
Commission expenses	29,450	26,200
Other operating expenses	36,307	36,575
Interest expense	2,049	2,046
Total expenses	185,791	181,609
Income (loss) before income taxes	11,185	(12,386)
Income tax expense (benefit)	3,281	(4,493)
Net income (loss)	$ 7,904	$ (7,893)
Net income (loss) per common share:
Basic	$ 0.57	$ (0.50)
Diluted	$ 0.56	$ (0.50)
Average common shares outstanding:
Basic	13,979,442	15,738,693
Diluted	14,174,875	15,738,693