Derivative Financial Instruments (Schedule Of Gain Or Loss On The Hedged Item In The Same Line Item, Other Revenue, As The Offsetting Loss Or Gain On The Related Interest Rate Swaps) (Details) (Other Revenue [Member], USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Swaps [Member]
Derivative [Line Items]
Gain (Loss)	$ (902)	$ (985)	$ (4,240)	$ (2,439)
Loan [Member]
Derivative [Line Items]
Gain (Loss)	$ 902	$ 985	$ 4,240	$ 2,439