Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount	$ (1,322)		$ (190)		$ 5,869		$ (8,924)
Change in fair value of securities available for sale, tax (expense) benefit	512		42		(2,325)		3,407
Change in fair value of securities available for sale, after tax amount	(810)		(148)		3,544		(5,517)
Net Security Gains Losses Reclassified Into Earnings Before Tax Amount	67				138		(4)
Net Security Gains Losses Reclassified Into Earnings Tax Amount	(27)				(56)		1
Net Security Gains Losses Reclassified Into Earnings Net Of Tax Amount	40				82		(3)
Change in fair value of securities available for sale, pre tax amount	(1,389)		(190)		5,731		(8,920)
Change in fair value of securities available for sale, tax (expense) benefit	539		42		(2,269)		3,406
Change in fair value of securities available for sale, after tax amount	(850)		(148)		3,462		(5,514)
Change in fair value of cash flow hedges, pre tax amount	252		(696)		(535)		592
Change in fair value of cash flow hedges, tax (expense) benefit	(103)		285		220		(242)
Change in fair value of cash flow hedges, after tax amount	149		(411)		(315)		350
Less: net cash flow hedge losses reclassified into interest on borrowings expense, pre tax amount	(726)	[1]	(1,464)	[1]	(2,937)	[1]	(4,322)	[1]
Less: net cash flow hedge losses reclassified into earnings, tax (expense) benefit	297	[1]	598	[1]	1,200	[1]	1,765	[1]
Less: net cash flow hedge losses reclassified into interest on borrowings expense, after tax	(429)	[1]	(866)	[1]	(1,737)	[1]	(2,557)	[1]
Loss reclassified from OCI into noninterest expense (loss on termination)		[1]			(1,121)	[1]
Less: Loss on termination of hedge reclassified into noninterest expense, tax (expense) benefit		[1]			458	[1]
Less: Loss on termination of hedge reclassified into noninterest expense, net of tax		[1]			(663)	[1]
Net change in fair value of cash flow hedges, pre tax amount	978		768		3,523		4,914
Net change in fair value of cash flow hedges, tax (expense) benefit	(400)		(313)		(1,438)		(2,007)
Net change in fair value of cash flow hedges	578		455		2,085		2,907
Amortization of certain costs included in net periodic retirement costs, pre tax amount	(66)	[2]	51	[2]	(198)	[2]	124	[2]
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit	27	[2]	(21)	[2]	81	[2]	(51)	[2]
Amortization of certain costs included in net periodic retirement costs, after tax amount	(39)	[2]	30	[2]	(117)		73
Total other comprehensive income, pre tax amount	(477)		629		9,056		(3,882)
Total other comprehensive income, tax (expense) benefit	166		(292)		(3,626)		1,348
Total other comprehensive income, after tax amount	$ (311)		$ 337		$ 5,430		$ (2,534)

[1] cludes the amortization of the remaining balance of a realized but unrecognized gain, net of tax, from the termination of interest rate swaps in June 2009. The original gain of $1.4 million, net of tax, is being recognized in earnings through December 2018, the original maturity date of the swap. The balance of this gain has amortized to $606,000 and $751,000 at September 30, 2014 and 2013, respectively.

[2] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in the Employee Benefit Plans footnote in the Company's Annual Report on Form 10-K for the year ended December 31, 2013, filed with the Securities and Exchange Commission.