Allowance for Loan and Lease Loss and Credit Quality (Schedule Of Newly Restructured Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	$ 3,172	$ 341
Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs		209
Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	2,919
Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	253	132
Rate Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Rate Modifications | Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs		0
Rate Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0
Rate Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Term Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Term Modifications | Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs		0
Term Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0
Term Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Interest Only Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Interest Only Modifications | Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs		0
Interest Only Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0
Interest Only Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Payment Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Payment Modifications | Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs		0
Payment Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0
Payment Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0
Combination Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	3,172	341
Combination Modifications | Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs		209
Combination Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	2,919
Combination Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	$ 253	$ 132