Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Period Increase (Decrease)		$ (142,000)	$ 1,568,000
Finite-Lived Intangible Asset, Useful Life	10 years
Goodwill impairment	$ 0	$ 142,000	$ 0