Accumulated Other Comprehensive Loss (Schedule of Changes In Each Component of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Equity [Abstract]
Combined Federal and state income tax rate	37.00%	37.00%
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax [Roll Forward]
Defined Benefit Pension Plans, Beginning Balance	$ (4,660)	$ (4,759)
Defined Benefit Pension Plans, Ending Balance	(4,660)	(4,759)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Roll Forward]
Unrealized Gains (Losses) on Securities Available-for-Sale, Beginning Balance	(2,352)	927
Unrealized Gains (Losses) on Securities Available-for-Sale Securities, Other comprehensive income before reclassifications	3,571	2,743
Unrealized Gains (Losses) on Securities Available-for-Sale, Amounts reclassified from other comprehensive loss	(2,698)	0
Unrealized Gain (Losses) on Securities Available-for-Sale Total	873	2,743
Unrealized Gains (Losses) on Securities Available-for-Sale, Ending Balance	(1,479)	3,670
Accumulated Other Comprehensive Income (Loss), Net of Income Tax [Roll Forward]
Total, Beginning Balance	(7,012)	(3,832)
Total, Other comprehensive income before reclassifications	3,571	2,743
Total, Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(2,698)	0
Total, Accumulated other comprehensive loss	873	2,743
Total, Ending Balance	$ (6,139)	$ (1,089)