Other Comprehensive Income (Loss) (Activity in Other Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 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		$ (144)	$ 543	$ 2,621	$ (1,018)
Net change in fair value of securities available for sale, tax		(53)	199	970	(325)
Net change in fair value of securities available for sale		(91)	344	1,651	(693)
Change in fair value of cash flow hedges, before tax		(15)	(15)	(129)	(21)
Change in fair value of cash flow hedges, tax		(11)	(14)	(35)	(11)
Change in fair value of cash flow hedges		(4)	(1)	(94)	(10)
Net cash flow hedge losses reclassified into earnings, before tax	[1]	0	132	0	418
Net cash flow hedge losses reclassified into earnings, tax	[1]	0	50	0	153
Net cash flow hedge losses reclassified into earnings	[1]	0	82	0	265
Net change in fair value of cash flow hedges, before tax		(15)	117	(129)	397
Net change in fair value of cash flow hedges, tax		(11)	36	(35)	142
Net change in fair value of cash flow hedges		(4)	81	(94)	255
Defined benefit plan obligation adjustment, before tax	[2]	263	367	789	1,102
Defined benefit plan obligation adjustment, tax	[2]	97	134	292	280
Defined benefit plan obligation adjustment, net of tax	[2]	166	233	497	822
Total other comprehensive income (loss), before tax		104	1,027	3,281	481
Total other comprehensive income (loss), tax		33	369	1,227	97
Total other comprehensive income (loss), net of tax		$ 71	$ 658	$ 2,054	$ 384

[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.