Allowance for Loan and Lease Loss and Credit Quality (Summary Of Reserve For Unfunded Commitments Activity) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	$ 3,539	$ 1,436
Net change to other expense	(345)	(19)
Balance, end of period	3,194	1,417
Unfunded loan commitments	$ 3,993,400	$ 1,595,665