Accumulated Other Comprehensive Income (Loss) (Schedule of Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Abstract]
Net unrealized holding gains (losses) arising during period, before tax	$ (622)	$ (81)	$ (1,989)	$ 653
Reclassification adjustments, before tax				(9)
Other comprehensive gain, before tax	(622)	(81)	(1,989)	644
Net unrealized holding gains (losses) arising during period, tax effect	(171)	(32)	(547)	257
Reclassification adjustments, tax effect				(3)
Other comprehensive gain, tax effect	(171)	(32)	(547)	254
Net unrealized holding gains (losses) arising during period, net of tax	(451)	(49)	(1,442)	396
Reclassification adjustments, net of tax				(6)
Other comprehensive gain, net of tax	$ (451)	$ (49)	$ (1,442)	$ 390