Allowance for Loan and Lease Loss and Credit Quality (Schedule Of Newly Restructured Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	$ 14,326	$ 3,126	$ 28,253	$ 12,986
Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	5,086		5,086	5,659
Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	9,053	1,009	21,846	4,405
Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	187	2,117	1,321	2,845
Consumer & other, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs				77
Rate Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	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		0	0
Rate Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	0	0
Rate Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	0	0
Rate Modifications | Consumer & other, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs				0
Term Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	187	0	187	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		0	0
Term Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	0	0
Term Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	187	0	187	0
Term Modifications | Consumer & other, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs				0
Interest Only Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	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		0	0
Interest Only Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	0	0
Interest Only Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	0	0
Interest Only Modifications | Consumer & other, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs				0
Payment Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	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		0	0
Payment Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	0	0
Payment Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	0	0	0	0
Payment Modifications | Consumer & other, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs				0
Combination Modifications
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	14,139	3,126	28,066	12,986
Combination Modifications | Commercial real estate | Term and Multi-family
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	5,086		5,086	5,659
Combination Modifications | Commercial | Term, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	9,053	1,009	21,846	4,405
Combination Modifications | Residential | Mortgage
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs	$ 0	$ 2,117	$ 1,134	2,845
Combination Modifications | Consumer & other, net
Financing Receivable, Modifications [Line Items]
Total restructured loans, net of deferred fees and costs				$ 77