Allowance for Loan and Lease Loss and Credit Quality (Schedule Of Troubled Debt Restructuring By Accrual versus Non-Accrual Status) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	$ 41,728	$ 41,207
Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	36,645	31,355
Non-Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	5,083	9,852
Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	20,749	22,509
Commercial Real Estate | Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	20,749	21,185
Commercial Real Estate | Non-Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	0	1,324
Commercial
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	13,616	13,781
Commercial | Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	8,533	5,253
Commercial | Non-Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	5,083	8,528
Residential
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	7,286	4,917
Residential | Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	7,286	4,917
Residential | Non-Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	0	$ 0
Consumer & Other
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	77
Consumer & Other | Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	77
Consumer & Other | Non-Accrual Status
Financing Receivable, Modifications [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	$ 0