Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
REVENUE:
Gross premiums written	$ 155,985	$ 105,065	$ 425,183	$ 322,986
Increase in gross unearned premiums	(27,252)	(4,214)	(60,286)	(29,901)
Gross premiums earned	128,733	100,851	364,897	293,085
Ceded premiums earned	(44,730)	(35,741)	(122,394)	(99,757)
Net premiums earned	84,003	65,110	242,503	193,328
Investment income	2,413	1,807	6,725	4,891
Net realized gains (losses)	323	(69)	312	(24)
Other revenue	3,067	1,999	8,002	5,863
Total revenue	89,806	68,847	257,542	204,058
EXPENSES:
Losses and loss adjustment expenses	40,432	30,140	137,030	86,605
Policy acquisition costs	23,756	17,291	64,140	48,668
Operating expenses	4,329	3,086	12,679	8,453
General and administrative expenses	8,331	4,709	22,244	13,394
Interest expense	81	98	232	325
Total expenses	76,929	55,324	236,325	157,445
Income before other income	12,877	13,523	21,217	46,613
Other income	107	0	292	16
Income before income taxes	12,984	13,523	21,509	46,629
Provision for income taxes	4,901	4,883	7,953	17,010
Net income	8,083	8,640	13,556	29,619
OTHER COMPREHENSIVE INCOME:
Change in net unrealized gains (losses) on investments	641	(1,249)	(1,722)	4,401
Reclassification adjustment for net realized investment (gains) losses	(323)	69	(312)	24
Income tax benefit (expense) related to items of other comprehensive income	(123)	456	786	(1,710)
Total comprehensive income	$ 8,278	$ 7,916	$ 12,308	$ 32,334
Weighted average shares outstanding
Weighted-average shares outstanding (in shares)	21,290,759	20,745,245	21,193,825	19,658,199
Weighted-average diluted shares (in shares)	21,528,546	20,843,603	21,427,398	19,756,411
Earnings per share
Basic earnings per share (in usd per share)	$ 0.38	$ 0.42	$ 0.64	$ 1.51
Diluted earnings per share (in usd per share)	0.38	0.41	0.63	1.50
Dividends declared per share (in usd per share)	$ 0.05	$ 0.04	$ 0.15	$ 0.12