Accumulated Other Comprehensive Loss (Schedule of Changes In Each Component of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
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	$ (4,759)	$ (5,349)
Defined Benefit Pension Plans, Ending Balance	(4,759)	(5,349)
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	927	1,190
Unrealized Gains (Losses) on Securities Available-for-Sale Securities, Other comprehensive income before reclassifications	7,301	1,943
Unrealized Gains (Losses) on Securities Available-for-Sale, Amounts reclassified from other comprehensive loss	(2,215)	(1,344)
Unrealized Gain (Losses) on Securities Available-for-Sale Total	5,086	599
Unrealized Gains (Losses) on Securities Available-for-Sale, Ending Balance	6,013	1,789
Accumulated Other Comprehensive Income (Loss), Net of Income Tax [Roll Forward]
Total, Beginning Balance	(3,832)	(4,159)
Total, Other comprehensive income before reclassifications	7,301	1,943
Total, Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(2,215)	(1,344)
Total, Accumulated other comprehensive loss	5,086	599
Total, Ending Balance	$ 1,254	$ (3,560)