Derivative Instruments (Schedule Of Notional Amounts Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Notional Amount of Derivatives	$ 797,474	$ 740,332
Interest Rate Swaps [Member]
Derivative [Line Items]
Notional Amount of Derivatives	657,418	596,933
Interest Rate Caps [Member]
Derivative [Line Items]
Notional Amount of Derivatives	9,236	9,736
Credit Risk Participation Agreements [Member]
Derivative [Line Items]
Notional Amount of Derivatives	67,276	52,456
Foreign Exchange Contracts [Member]
Derivative [Line Items]
Notional Amount of Derivatives	$ 63,544	$ 81,207