Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Abstract]
Net unrealized gain on securities available-for-sale	$ (1,009)	$ 3,311
Net unrealized loss on securities available-for-sale for which a portion of an other-than-temporary impairment has been recognized in income	(866)	(905)
Net unrealized loss on derivative used for cash flow hedges		(1)
Net unrealized loss relating to defined benefit plan liability	30	(32)
Accumulated other comprehensive income before tax	(1,845)	2,373
Tax expense	(591)	883
Net of tax amount	$ (1,254)	$ 1,490