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	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Fair Value Measurement On Nonrecurring Basis Asset And Liabilities Value [Roll Forward]
Beginning balance	$ 6,916	$ 8,482
Loans classified as impaired during the period	2,995	0
Specific valuation allowance allocations	(86)	0
Fair Value	2,909	0
(Additional) reduction in specific valuation allowance allocations	40	0
Paydowns, payoffs, other activity	(609)	(3,115)
Ending balance	$ 9,256	$ 5,367