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Other Income - Net (Schedule Of Other Income - Net) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Other Income -Net [Abstract] |  |  |  |
Market value adjustment on assets held in deferred compensation trust | $ 2,886 | $ 2,189 | $ 5,094 | $ 3,827
Interest income | 173 | 111 | 387 | 529
Other - net | (23) |  | 7 |
Total other income - net | $ 3,036 | $ 2,300 | $ 5,488 | $ 4,356

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