Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated other comprehensive income (loss), beginning balance	$ (19,757)	$ (9,699)
Other comprehensive income (loss) before reclassifications	413	298
Amounts reclassed from accumulated other comprehensive income	299	166
Total other comprehensive income (loss), net of tax	712	464
Accumulated other comprehensive income (loss), ending balance	(19,045)	(9,235)
Net Unrealized Gains on AFS Securities [Member]
Accumulated other comprehensive income (loss), beginning balance	(6,825)	1,051
Other comprehensive income (loss) before reclassifications	401	364
Amounts reclassed from accumulated other comprehensive income	0	0
Total other comprehensive income (loss), net of tax	401	364
Accumulated other comprehensive income (loss), ending balance	(6,424)	1,415
Net Unrealized Losses on Cash Flow Hedges [Member]
Accumulated other comprehensive income (loss), beginning balance	(300)	(43)
Other comprehensive income (loss) before reclassifications	12	(66)
Amounts reclassed from accumulated other comprehensive income	86	0
Total other comprehensive income (loss), net of tax	98	(66)
Accumulated other comprehensive income (loss), ending balance	(202)	(109)
Pension Benefit Adjustment [Member]
Accumulated other comprehensive income (loss), beginning balance	(12,632)	(10,707)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassed from accumulated other comprehensive income	213	166
Total other comprehensive income (loss), net of tax	213	166
Accumulated other comprehensive income (loss), ending balance	$ (12,419)	$ (10,541)