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Other Income - Net (Schedule Of Other Income —Net) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Other Income—Net [Abstract] |  |  |  |
Market value adjustment on assets held in deferred compensation trust | $ (130) | $ 779 | $ 2,207 | $ 1,638
Interest income | 112 | 259 | 214 | 417
Other - net | 31 |  | 31 | 1
Total other income - net | $ 13 | $ 1,038 | $ 2,452 | $ 2,056

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