Allowance for Loan and Lease Loss and Credit Quality (Summary Of Reserve For Unfunded Commitments Activity) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	$ 3,482	$ 3,194	$ 3,574	$ 3,539
Net change to other expense	49	(330)	(43)	(675)
Balance, end of period	3,531	2,864	3,531	2,864
Unfunded loan commitments	$ 4,006,031	$ 3,216,725	$ 4,006,031	$ 3,216,725