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Benefit Plans (Schedule Of Amounts Recognized In Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Benefit Plans [Abstract] |  |
Net Actuarial loss | $ (7,812) | $ (6,975)
Accumulated pension adjustment | (7,812) | (6,975)
Tax effect | 1,641 | 1,465
Net amount recognized in accumulated other comprehensive loss | $ (6,171) | $ (5,510)

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