Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Loans on the Cost Recovery Method	Dec. 31, 2013 Loans on the Cost Recovery Method
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	$ 1,029,426	$ 2,362,152	$ 52,100	$ 28,500
Fair value of acquired impaired loans covered by loss share agreements	316,327	0
Accretion	30,200	79,886
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	(105,135)	(258,169)
Ending balance	1,270,818	2,183,869	52,100	28,500
Outstanding principal balance	$ 1,727,492	$ 3,618,722