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Income Taxes (Summary Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Income Tax Disclosure [Abstract] |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts | $ 4,395 | $ 5,883
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits | 3,538 | 3,165
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions | 1,112 | 1,784
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities | 1,693 | 2,218
Deferred Tax Assets, Other | 4,876 | 4,543
Total Deferred Tax Assets | 15,614 | 17,593
Deferred Tax Liabilities, Investments | 5,680 | 11,637
Deferred Tax Liabilities, Other | 9,871 | 9,158
Deferred Tax Liabilities, Gross | 15,551 | 20,795
Deferred Tax Liabilities, Net |  | $ (3,202)
Deferred Income Tax Assets, Net | $ 63 |

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