Allowance for Loan and Lease Loss and Credit Quality (Schedule Of Troubled Debt Restructuring By Accrual versus Non-Accrual Status) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	$ 39,648	$ 66,696
Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	37,023	54,836
Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	2,625	11,860
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	24,734	51,136
Commercial Real Estate [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	24,734	48,817
Commercial Real Estate [Member] | Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	0	2,319
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	11,329	14,945
Commercial [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	8,704	5,404
Commercial [Member] | Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	2,625	9,541
Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	3,585	615
Residential [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	3,585	615
Residential [Member] | Non-Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Recorded Investments	$ 0	$ 0