Allowance for Credit Losses (Schedule Of Newly Restructured Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	$ 1,661	$ 7,029	$ 5,939	$ 22,045
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	0	0	0	8,508
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	1,661	7,029	5,903	13,463
Consumer & Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings, net of deferred fees and costs	$ 0	$ 0	$ 36	$ 74