Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated other comprehensive income (loss), beginning balance	$ (9,699)
Total other comprehensive income (loss), net of tax	464	$ 984
Accumulated other comprehensive income (loss), ending balance	(9,235)
Net Unrealized Gains on AFS Securities [Member]
Accumulated other comprehensive income (loss), beginning balance	1,051	4,222
Other comprehensive income (loss) before reclassifications	364	664
Amounts reclassed from accumulated other comprehensive income	0	0
Total other comprehensive income (loss), net of tax	364	664
Accumulated other comprehensive income (loss), ending balance	1,415	4,886
Net Unrealized Losses on Cash Flow Hedges [Member]
Accumulated other comprehensive income (loss), beginning balance	(43)	(287)
Other comprehensive income (loss) before reclassifications	(66)	(8)
Amounts reclassed from accumulated other comprehensive income	0	93
Total other comprehensive income (loss), net of tax	(66)	85
Accumulated other comprehensive income (loss), ending balance	(109)	(202)
Pension Benefit Adjustment [Member]
Accumulated other comprehensive income (loss), beginning balance	(10,707)	(12,744)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassed from accumulated other comprehensive income	166	235
Total other comprehensive income (loss), net of tax	166	235
Accumulated other comprehensive income (loss), ending balance	(10,541)	(12,509)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated other comprehensive income (loss), beginning balance	(9,699)	(8,809)
Other comprehensive income (loss) before reclassifications	298	656
Amounts reclassed from accumulated other comprehensive income	166	328
Total other comprehensive income (loss), net of tax	464	984
Accumulated other comprehensive income (loss), ending balance	$ (9,235)	$ (7,825)