Comprehensive Income (Loss) (Schedule of Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive income (loss)	$ 3,634	$ (11,961)
Unrealized Gain (Loss) on Securities Available for Sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive income (loss)	7,327	(12,390)
Deferred tax asset (liability)	(1,684)	2,896
Total accumulated other comprehensive income (loss)	5,643	(9,494)
Additional Pension Asset (Liability)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive income (loss)	(2,609)	(3,220)
Deferred tax asset (liability)	600	753
Total accumulated other comprehensive income (loss)	(2,009)	(2,467)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive income (loss)	$ 3,634	$ (11,961)