Accumulated Other Comprehensive Income (Loss) (Schedule of Accumulated Other 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 gains and losses, beginning of period	$ (2,182)	$ (489)	$ (1,191)	$ (928)
Other comprehensive gain (losses), net of tax before reclassifications	(451)	(49)	(1,442)	396
Amounts reclassified from accumulated other comprehensive income				(6)
Net other comprehensive gain (loss)	(451)	(49)	(1,442)	390
Net unrealized gains and losses, end of period	$ (2,633)	$ (538)	$ (2,633)	$ (538)