Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013 Impaired At Acquisition Date	Jun. 30, 2012 Impaired At Acquisition Date	Jun. 30, 2013 All Other Acquired Loans	Jun. 30, 2012 All Other Acquired Loans	Jun. 30, 2013 Loans on the Cost Recovery Method	Dec. 31, 2012 Loans on the Cost Recovery Method	Jun. 30, 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	$ 46,892	$ 74,479	$ 166,138
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	(73,150)	(120,657)	(292,749)	(242,144)
Ending balance	217,476	337,648	1,225,860	1,661,703	46,892	74,479	166,138
Outstanding principal balance	$ 784,657	$ 1,156,145	$ 1,671,690	$ 2,293,228