Unpaid Losses and Loss Adjustment Expenses - Changes in the Liability for Unpaid Losses and Loss Adjustment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross reserves - beginning of period	$ 41,832	$ 32,357	$ 35,422	$ 31,531
Less: reinsurance recoverables on unpaid losses	5,890	5,022	5,405	3,224
Net reserves - beginning of period	35,942	27,335	30,017	28,307
Add: incurred losses and LAE, net of reinsurance:
Current period	11,989	9,894	35,135	27,234
Prior period	2,593	(81)	5,687	125
Total net incurred losses and LAE	14,582	9,813	40,822	27,359
Deduct: loss and LAE payments, net of reinsurance:
Current period	6,938	6,972	14,730	13,766
Prior period	3,926	2,650	16,449	14,374
Total net loss and LAE payments	10,864	9,622	31,179	28,140
Net reserves - end of period	39,660	27,526	39,660	27,526
Plus: reinsurance recoverables on unpaid losses	6,334	5,069	6,334	5,069
Gross reserves - end of period	$ 45,994	$ 32,595	$ 45,994	$ 32,595