Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013 Impaired At Acquisition Date	Sep. 30, 2012 Impaired At Acquisition Date	Sep. 30, 2013 All Other Acquired Loans	Sep. 30, 2012 All Other Acquired Loans	Sep. 30, 2013 Loans on the Cost Recovery Method	Dec. 31, 2012 Loans on the Cost Recovery Method
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	$ 290,626	$ 458,305	$ 1,518,609	$ 1,903,847	$ 29,194	$ 74,479
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	(131,294)	(167,581)	(489,660)	(297,474)
Ending balance	159,332	290,724	1,028,949	1,606,373	29,194	74,479
Outstanding principal balance	$ 670,256	$ 1,077,975	$ 1,412,617	$ 2,253,660