Accumulated Other Comprehensive Income (Schedule of Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income [Abstract]
Net unrealized holding gains arising during period, before tax	$ (1,095)	$ 216	$ 981
Reclassification adjustments, before tax	(22)	(6)	(3)
Other comprehensive gain, before tax	(1,117)	210	978
Net unrealized holding gains arising during period, tax effect	(433)	85	300
Reclassification adjustments, tax effect	(7)	(2)	(1)
Other comprehensive gain, tax effect	(440)	83	299
Net unrealized holding gains arising during period, net of tax	(662)	131	681
Reclassification adjustments, net of tax	(15)	(4)	(2)
Other comprehensive gain, net of tax	$ (677)	$ 127	$ 679