Deferred Policy Acquisition Costs (Deferred Amortized Policy Acquisition Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Document and Entity Information [Abstract]
Deferred	$ (10,365)	$ (11,097)
Amortized	10,373	11,196
Net	$ 8	$ 99