Non-Covered Loans And Leases (Schedule Of Major Types Of Non-Covered Loans) (Details) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Non-Covered Loans And Leases [Abstract]
Commercial real estate, Term & multifamily	$ 3,616,386,000	$ 3,558,295,000
Commercial real estate, Construction & development	162,866,000	165,066,000
Commercial real estate, Residential development	74,604,000	90,073,000
Commercial, Term	687,242,000	625,766,000
Commercial, LOC & other	764,049,000	832,999,000
Residential, Mortgage	345,763,000	315,927,000
Residential, Home equity loans & lines	264,662,000	272,192,000
Consumer & other	37,082,000	38,860,000
Total	5,952,654,000	5,899,178,000
Deferred loan fees, net	(11,384,000)	(11,080,000)
Total loans and leases	5,941,270,000	5,888,098,000
Total loans pledged to secure borrowings and available lines of credit	$ 5,200,000,000