Deferred Policy Acquisition Costs (Deferred Amortized Policy Acquisition Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Document and Entity Information [Abstract]
Deferred	$ 11,001	$ 9,759	$ 27,672	$ 31,472
Amortized	(11,909)	(9,849)	(30,524)	(31,420)
Deferred policy acquisition costs, net	$ (908)	$ (90)	$ (2,852)	$ 52