Deferred Policy Acquisition Costs (Deferred Amortized Policy Acquisition Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Document and Entity Information [Abstract]
Deferred	$ (6,306)	$ (10,616)	$ (16,671)	$ (21,713)
Amortized	(8,242)	(10,375)	(18,615)	(21,571)
Deferred policy acquisition costs, net	$ (1,936)	$ 241	$ (1,944)	$ 142