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Components of Net Periodic Benefit Cost - Employer Contributions (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items] |  |  |
Amount of potential discretionary contributions accrued to a defined contribution plan | $ 744,000 |  | $ 608,000
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected future benefit payment |  | $ 3,900,000 |
Pension Benefits | Employee Stock Option [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected future benefit payment |  | 604,000 |
Contributions by employer | 0 |  |
Post-Retirement Health Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected future benefit payment |  | $ 249,000 |
Contributions by employer | $ 80,000 |  |

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