Fair Value Measurements (Schedule Of Level 2 Financial Assets And Liabilities Measured On A Recurring Basis) (Details) - Impaired Loans - Fair Value, Measurements, Nonrecurring - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Fair Value Measurement On Nonrecurring Basis Asset And Liabilities Value [Roll Forward]
Beginning balance	$ 10,078	$ 9,020
Loans classified as impaired during the period	0	0
Specific valuation allowance allocations	0	0
Fair Value	0	0
Reduction in (additional) specific valuation allowance allocations	74	(474)
Paydowns, payoffs, other activity	(684)	888
Ending balance	$ 9,468	$ 9,434