Other Comprehensive Income (Loss) (Activity in Other Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015		Jun. 30, 2014
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Net change in fair value of securities available for sale, before tax		$ (2,614)	$ 2,837	$ (1,562)		$ 3,801
Net change in fair value of securities available for sale, tax		(913)	1,020	(525)		1,372
Net change in fair value of securities available for sale		(1,701)	1,817	(1,037)		2,429
Change in fair value of cash flow hedges, before tax		26	19	(6)		(24)
Change in fair value of cash flow hedges, tax		27	33	3		6
Change in fair value of cash flow hedges		(1)	(14)	(9)		(30)
Net cash flow hedge losses reclassified into earnings, before tax		141	145	286	[1]	290	[1]
Net cash flow hedge losses reclassified into earnings, tax		51	52	103	[1]	105	[1]
Net cash flow hedge losses reclassified into earnings		90	93	183	[1]	185	[1]
Net change in fair value of cash flow hedges, before tax		167	164	280		266
Net change in fair value of cash flow hedges, tax		78	85	106		111
Net change in fair value of cash flow hedges		89	79	174		155
Defined benefit plan obligation adjustment, before tax	[2]	368	127	735		254
Defined benefit plan obligation adjustment, tax	[2]	14	46	146		85
Defined benefit plan obligation adjustment, net of tax	[2]	354	81	589		169
Total other comprehensive (loss) income, before tax		(2,079)	3,128	(547)		4,321
Total other comprehensive (loss) income, tax		(821)	1,151	(273)		1,568
Total other comprehensive (loss) income, net of tax		$ (1,258)	$ 1,977	$ (274)		$ 2,753

[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.