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Pension And Other Liabilities (Schedule Of The Components Of Net Periodic Benefit Cost And Other Amounts Recognized In Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Pension And Other Liabilities [Abstract] |  |
Interest cost | $ 262 | $ 483
Amortization of prior service costs |  |
Amortization of net actuarial gain | 152 | 151
Net periodic benefit cost | 414 | 634
Amortization of net loss | (152) | (151)
Total recognized in other comprehensive income | (152) | (151)
Total recognized in net periodic benefit cost and other comprehensive income | $ 262 | $ 483

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