Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount	$ 2,541	$ 3,287
Change in fair value of securities available for sale, tax (expense) benefit	(980)	(1,316)
Change in fair value of securities available for sale, after tax amount	1,561	1,971
Net Security Gains Losses Reclassified Into Earnings Before Tax Amount	0	91
Net Security Gains Losses Reclassified Into Earnings Tax Amount	0	(37)
Net Security Gains Losses Reclassified Into Earnings Net Of Tax Amount	0	54
Change in fair value of securities available for sale, pre tax amount	2,541	3,196
Change in fair value of securities available for sale, tax (expense) benefit	(980)	(1,279)
Change in fair value of securities available for sale, after tax amount	1,561	1,917
Change in fair value of cash flow hedges, pre tax amount	(567)	(300)
Change in fair value of cash flow hedges, tax (expense) benefit	231	123
Change in fair value of cash flow hedges, after tax amount	(336)	(177)
Less: net cash flow hedge losses reclassified into interest on borrowings expense, pre tax amount	(706)	(1,148)
Less: net cash flow hedge losses reclassified into earnings, tax (expense) benefit	288	469
Less: net cash flow hedge losses reclassified into interest on borrowings expense, after tax	(418)	(679)
Net change in fair value of cash flow hedges, pre tax amount	139	848
Net change in fair value of cash flow hedges, tax (expense) benefit	(57)	(346)
Net change in fair value of cash flow hedges	82	502
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	44	(80)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	(18)	33
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	26	(47)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	61	(11)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax	(25)	4
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	36	(7)
Amortization of certain costs included in net periodic retirement costs, pre tax amount	24	25
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit	(10)	(10)
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	14	15
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	129	(66)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(53)	27
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	76	(39)
Total other comprehensive income, pre tax amount	2,809	3,978
Total other comprehensive income, tax (expense) benefit	(1,090)	(1,598)
Total other comprehensive income, after tax amount	$ 1,719	$ 2,380