Reserve for Losses and Loss Adjustment Expenses - (Details 2) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract]
Incurred claims and claim adjustment expenses	$ 3,710	$ 1,869
Favorable prior year development	6,653	2,873
Reserve for losses and LAE, for prior years	$ 17,800	$ 13,000