Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
REVENUE:
Gross premiums written	$ 1,040,848	$ 708,156	$ 569,736
Increase in gross unearned premiums	(54,825)	(41,327)	(65,521)
Gross premiums earned	986,023	666,829	504,215
Ceded Premiums Earned	(400,533)	(209,898)	(168,257)
Net premiums earned	585,490	456,931	335,958
Net investment income	17,812	10,679	9,212
Net realized gains (losses)	67	547	827
Other revenue	51,051	18,960	11,572
Total revenue	654,420	487,117	357,569
EXPENSES:
Losses and loss adjustment expenses	365,535	298,353	183,108
Deferred Policy Acquisition Costs, Amortization Expense	175,444	117,658	87,401
Operating Expenses	27,675	20,524	15,316
General and Administrative Expense	81,762	42,956	29,852
Interest Expense	3,247	723	326
Total expenses	653,663	480,214	316,003
Income before other income	757	6,903	41,566
Other Nonoperating Income (Expense)	153	100	294
Income before income taxes	910	7,003	41,860
Provision (benefit) for income taxes	(9,235)	1,305	14,502
Net income	10,145	5,698	27,358
OTHER COMPREHENSIVE INCOME:
Change in net unrealized gain (loss) on investments	10,647	(629)	(3,070)
Reclassification adjustment for net realized investment gains	(67)	(547)	(827)
Income tax benefit (expense) related to items of other comprehensive income	(2,181)	378	1,506
Total comprehensive income	$ 18,544	$ 4,900	$ 24,967
Weighted average shares outstanding
Basic	37,152,768	21,417,486	21,218,233
Diluted	37,375,340	21,614,443	21,452,540
Earnings per share
Earnings Per Share, Basic	$ 0.27	$ 0.27	$ 1.29
Earnings Per Share, Diluted	0.27	0.26	1.28
Common Stock, Dividends, Per Share, Declared	$ 0.24	$ 0.23	$ 0.20