Other Comprehensive Income (Loss) (Activity in Other Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 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		$ 2,187	$ (2,614)	$ 2,765	$ (1,562)
Net change in fair value of securities available for sale, tax		809	(913)	1,023	(525)
Net change in fair value of securities available for sale		1,378	(1,701)	1,742	(1,037)
Change in fair value of cash flow hedges, before tax		10	26	(114)	(6)
Change in fair value of cash flow hedges, tax		34	27	(24)	3
Change in fair value of cash flow hedges		(24)	(1)	(90)	(9)
Net cash flow hedge losses reclassified into earnings, before tax	[1]	0	141	0	286
Net cash flow hedge losses reclassified into earnings, tax	[1]	0	51	0	103
Net cash flow hedge losses reclassified into earnings	[1]	0	90	0	183
Net change in fair value of cash flow hedges, before tax		10	167	(114)	280
Net change in fair value of cash flow hedges, tax		34	78	(24)	106
Net change in fair value of cash flow hedges		(24)	89	(90)	174
Defined benefit plan obligation adjustment, before tax	[2]	263	368	526	735
Defined benefit plan obligation adjustment, tax	[2]	98	14	195	146
Defined benefit plan obligation adjustment, net of tax	[2]	165	354	331	589
Total other comprehensive income (loss), before tax		2,460	(2,079)	3,177	(547)
Total other comprehensive income (loss), tax		941	(821)	1,194	(273)
Total other comprehensive income (loss), net of tax		$ 1,519	$ (1,258)	$ 1,983	$ (274)

[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.