Premises And Equipment, Net (Summary Of Premises And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Premises And Equipment, Net [Abstract]
Land	$ 15,331	$ 16,332
Buildings and improvements	98,906	101,285
Leasehold improvements	71,159	70,114
Fixtures and equipment	66,222	64,431
Data processing and software	153,282	140,649
Total premises and equipment	404,900	392,811
Less accumulated depreciation and amortization	(257,521)	(235,087)
Premises and equipment, net	$ 147,379	$ 157,724