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Other Non-Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2023
Other Liabilities Disclosure [Abstract] |
Composition of Other Non-Current Liabilities | The composition of other non-current liabilities was as follows:
|  | December 31 |
(In thousands) |  | 2023 |  |  | 2022 |
Deferred revenue |  | $ | 6,647 |  |  | $ | 8,762 |
Environmental and legal matters |  |  | 8,491 |  |  |  | 16,276 |
Deferred compensation liability |  |  | 27,607 |  |  |  | 32,459 |
Pension liability |  |  | 5,430 |  |  |  | 5,241 |
Other non-current liabilities |  |  | 21,172 |  |  |  | 17,953 |
Total other non-current liabilities |  | $ | 69,347 |  |  | $ | 80,691 |

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