Allowance for Loan and Lease Loss and Credit Quality (Summary Of Reserve For Unfunded Commitments Activity) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	$ 2,864	$ 4,845	$ 3,539	$ 1,436
Net change to other expense	217	(457)	(458)	(1,014)
Acquired reserve	0	0	0	3,966
Balance, end of period	3,081	4,388	3,081	4,388
Unfunded loan commitments	$ 3,454,473	$ 2,949,211	$ 3,454,473	$ 2,949,211