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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total restructured loans, net of deferred fees and costs	$ 0	$ 0	$ 1,967	$ 106
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total restructured loans, net of deferred fees and costs			118	0
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total restructured loans, net of deferred fees and costs			1,842	0
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total restructured loans, net of deferred fees and costs			$ 7	$ 106