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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
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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

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