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Pension Plans And Other Postretirement Benefit Plans (Deferred Compensation) (Details) - Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] - USD ($) $ in Thousands | 12 Months Ended |
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Dec. 31, 2019 | Dec. 31, 2018
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |
Deferred compensation assets and liabilities | $ 8,948 | $ 8,400
Executive Officer [Member] |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |
Deferred compensation, earlier of retirement, termination, disability or death, percent | 75.00% |
Deferred compensation incentive payments, percent | 100.00% |

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- Definition Deferred Compensation Assets And Liabilities + References No definition available. + Details
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- Definition Deferred Compensation, Maximum Incentive Payments + References No definition available. + Details
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- Definition Deferred Compensation, Maximum Salary + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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Period Type: |