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Summary Of Significant Accounting Policies (Schedule Of Other Operating Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Other operating income | $ (987) | $ 75,095 | $ (9,132)
CARES Act Grant [Member] |  |  |
Other operating income |  | 80,225 |
Lost Revenue [Member] | CARES Act Grant [Member] |  |  |
Other operating income |  | 44,784 |
Incremental PTO [Member] | CARES Act Grant [Member] |  |  |
Other operating income |  | 21,425 |
Hard Costs [Member] | CARES Act Grant [Member] |  |  |
Other operating income |  | $ 14,016 |

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- Definition The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations. + References No definition available. + Details
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- Details
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- Details
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