Derivative Instruments (Effect Of Fair Value Hedges On Consolidated Statements Of Income) (Details) (Not Designated As Hedging Instruments [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ 116		$ (6,585)		$ (255)		$ (1,802)
Other Non-Interest Income [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	65	[1]	221	[1]	449	[1]	63	[1]
Mortgage Banking Income [Member] | Mortgage Derivatives [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ 51	[2]	$ (6,806)	[2]	$ (704)	[2]	$ (1,865)	[2]

[1] Gain (loss) represents net fair value adjustments (including credit related adjustments) for customer swaps and offsetting positions.

[2] Gain (loss) represents net fair value adjustments recorded for interest rate lock commitments and commitments to sell mortgage loans to third party investors.