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Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Assets |  |  |
Pension plan assets | $ 52,296 | $ 61,936 | $ 49,914
Recurring |  |  |
Assets |  |  |
Pension plan assets | 52,296 | 61,936 |
Liabilities |  |  |
Contingent consideration |  | 4,609 |
Recurring | Level 1 |  |  |
Assets |  |  |
Pension plan assets | 0 | 0 |
Liabilities |  |  |
Contingent consideration | 0 | 0 |
Recurring | Level 2 |  |  |
Assets |  |  |
Pension plan assets | 0 | 0 |
Liabilities |  |  |
Contingent consideration | 0 | 0 |
Recurring | Level 3 |  |  |
Assets |  |  |
Pension plan assets | 52,296 | 61,936 |
Liabilities |  |  |
Contingent consideration | $ 6,911 | $ 4,609 |

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