Other Comprehensive Income (Activity in Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 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	$ 1,053		$ 964
Net change in fair value of securities available for sale, tax	389		352
Net change in fair value of securities available for sale	664		612
Change in fair value of cash flow hedges, before tax	(32)		(43)
Change in fair value of cash flow hedges, tax	(24)		(27)
Change in fair value of cash flow hedges	(8)		(16)
Net cash flow hedge losses reclassified into earnings, before tax	145	[1]	145	[1]
Net cash flow hedge losses reclassified into earnings, tax	52	[1]	53	[1]
Net cash flow hedge losses reclassified into earnings	93	[1]	92	[1]
Net change in fair value of cash flow hedges, before tax	113		102
Net change in fair value of cash flow hedges, tax	28		26
Net change in fair value of cash flow hedges	85		76
Defined benefit plan obligation adjustment, before tax	367	[2]	88	[2]
Defined benefit plan obligation adjustment, tax	132	[2]	0	[2]
Defined benefit plan obligation adjustment, net of tax	235	[2]	88	[2]
Total other comprehensive (loss) income, before tax	1,533		1,154
Total other comprehensive (loss) income, tax	549		378
Total other comprehensive (loss) income, net of tax	$ 984		$ 776

[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.