Other Comprehensive Income (Loss) (Activity in Other Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Net change in fair value of securities available for sale, before tax		$ 578	$ 1,053
Net change in fair value of securities available for sale, tax		214	389
Net change in fair value of securities available for sale		364	664
Change in fair value of cash flow hedges, before tax		(124)	(32)
Change in fair value of cash flow hedges, tax		(58)	(24)
Change in fair value of cash flow hedges		(66)	(8)
Net cash flow hedge losses reclassified into earnings, before tax	[1]	0	145
Net cash flow hedge losses reclassified into earnings, tax	[1]	0	52
Net cash flow hedge losses reclassified into earnings	[1]	0	93
Net change in fair value of cash flow hedges, before tax		(124)	113
Net change in fair value of cash flow hedges, tax		(58)	28
Net change in fair value of cash flow hedges		(66)	85
Defined benefit plan obligation adjustment, before tax	[2]	263	367
Defined benefit plan obligation adjustment, tax	[2]	97	132
Defined benefit plan obligation adjustment, net of tax	[2]	166	235
Total other comprehensive income (loss), before tax		717	1,533
Total other comprehensive income (loss), tax		253	549
Total other comprehensive income (loss), net of tax		$ 464	$ 984

[1] Included in interest expense on junior subordinated debentures in the Consolidated Statements of Income.

[2] Included in salaries and employee benefits expense in the Consolidated Statements of Income.