Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Gross written premiums	$ 327,469	$ 312,076	$ 1,099,054	$ 1,037,426
Revenues:
Net written premiums	228,417	196,556	772,131	664,477
Change in unearned premiums	16,950	17,339	(70,408)	(42,440)
Net earned premiums	245,367	213,895	701,723	622,037
Net investment income	15,839	14,094	48,097	41,997
Total other-than-temporary impairment losses	(41)	(1,821)	158	(1,863)
Portion of loss recognized in other comprehensive income (before tax)	41		(158)
Net other-than-temporary impairment losses recognized in earnings		(1,821)		(1,863)
Net realized gains (losses)	6,718	(988)	12,024	7,171
Other income (expense)	1,336	(210)	10,070	(507)
Total revenues	269,260	224,970	771,914	668,835
Expenses:
Net losses and loss adjustment expenses	135,284	125,086	410,571	387,576
Commission expenses	33,943	27,685	91,820	82,631
Other operating expenses	50,388	39,056	145,526	120,608
Interest expense	3,388	2,053	11,559	6,156
Total expenses	223,003	193,880	659,476	596,971
Income (loss) before income taxes	46,257	31,090	112,438	71,864
Income tax expense	15,032	9,804	36,384	22,731
Net income	$ 31,225	$ 21,286	$ 76,054	$ 49,133
Net income per common share:
Basic	$ 2.19	$ 1.50	$ 5.34	$ 3.48
Diluted	$ 2.14	$ 1.48	$ 5.22	$ 3.42
Average common shares outstanding:
Basic	14,265,260	14,144,478	14,252,910	14,120,788
Diluted	14,613,744	14,408,413	14,577,297	14,379,943