Derivative Instruments (Schedule Of Fair Values Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Other assets	$ 10,457	$ 12,980
Other liabilities	(10,948)	(13,329)
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other assets	0	0
Other liabilities	(22)	(300)
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Other assets	0	0
Other liabilities	(22)	(300)
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other assets	10,457	12,980
Other liabilities	(10,926)	(13,029)
Not Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Other assets	10,144	11,428
Other liabilities	(10,144)	(11,429)
Not Designated as Hedging Instrument [Member] | Interest Rate Caps [Member]
Derivatives, Fair Value [Line Items]
Other assets	62	1
Other liabilities	(62)	(1)
Not Designated as Hedging Instrument [Member] | Credit Risk Participation Agreements [Member]
Derivatives, Fair Value [Line Items]
Other assets	3	4
Other liabilities	(226)	(69)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets	248	1,547
Other liabilities	$ (494)	$ (1,530)