Accumulated Other Comprehensive Income (Loss) (Reclassification out of Accumulated Other Comprehensive Income (Loss) Alternate) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Related income tax expense	$ (910)	$ (1,132)	$ (2,079)	$ (3,499)
Reclassification out of AOCI [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Related income tax expense	(85)	(15)	(140)	(154)
Net Income	321	30	526	299
Reclassification out of AOCI [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member] | Other Income [Member]
Other Income	$ 406	$ 45	$ 666	$ 453