Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUE:
Gross premiums written	$ 295,935	$ 267,219	$ 960,214	$ 788,408
Change in gross unearned premiums	8,021	782	(87,667)	(76,758)
Gross premiums earned	303,956	268,001	872,547	711,650
Ceded premiums earned	(132,626)	(115,507)	(365,011)	(292,355)
Net premiums earned	171,330	152,494	507,536	419,295
Investment income	6,888	4,901	19,665	12,489
Net realized gains (losses)	(447)	(71)	(674)	(554)
Unrealized Gain (Loss) on Securities	6,109	0	5,046
Other revenue	3,772	13,804	11,280	40,604
Total revenue	187,652	171,128	542,853	471,834
EXPENSES:
Losses and loss adjustment expenses	120,552	143,127	286,393	293,398
Policy acquisition costs	54,200	46,546	153,716	125,302
Operating expenses	10,976	6,891	28,976	19,020
General and administrative expenses	15,358	19,316	51,326	58,825
Interest expense	2,455	771	7,371	2,282
Total expenses	203,541	216,651	527,782	498,827
Income (loss) before other income	(15,889)	(45,523)	15,071	(26,993)
Other income	19	36	106	94
Income (loss) before income taxes	(15,870)	(45,487)	15,177	(26,899)
Provision for income taxes	(4,163)	(17,475)	3,815	(10,043)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	(11,707)	(28,012)	11,362	(16,856)
Net income (loss)	(11,708)	(28,012)	11,361	(16,856)
Net Income (Loss) Attributable to Noncontrolling Interest	1	0	1	0
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	1	0	1	0
OTHER COMPREHENSIVE INCOME:
Change in net unrealized gains (losses) on investments	(3,354)	2,672	(30,706)	10,509
Reclassification adjustment for net realized investment (gains) losses	447	71	674	554
Income tax benefit (expense) related to items of other comprehensive income	699	(1,050)	7,110	(4,207)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(13,915)	(26,319)	(11,560)	(10,000)
Total comprehensive income	$ (13,916)	$ (26,319)	$ (11,561)	$ (10,000)
Weighted-average shares outstanding
Weighted-average shares outstanding	42,677,893	42,524,400	42,636,515	35,341,994
Weighted-average diluted shares	42,677,893	42,741,004	42,791,208	35,563,032
Earnings Per Share
Basic earnings per share	$ (0.27)	$ (0.66)	$ 0.27	$ (0.48)
Diluted earnings per share	(0.27)	(0.66)	0.27	(0.47)
Dividends declared per share (in usd per share)	$ 0.06	$ 0.06	$ 0.18	$ 0.18