Loss and Loss Adjustment Expense Reserves (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Insurance Loss Reserves [Abstract]
Balance at beginning, gross of reinsurance	$ 6,971	$ 2,123
Less reinsurance recoverable on loss and LAE expense reserves	(3,652)	(120)
Balance, beginning of period, net of reinsurance	3,319	2,003
Incurred related to:
Current year	3,960	6,803
Prior years	(329)	(167)
Paid related to:
Current year	(2,685)	(4,444)
Prior years	(921)	(266)
Balance, March 31, net of reinsurance	3,344	3,929
Plus reinsurance recoverable related to loss and LAE expense reserves	4,469	2,028
Balance at ending, gross of reinsurance	$ 7,813	$ 5,957