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Pensions - Fair Value of Pension Plan Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | $ 328,283 | $ 339,046 | $ 371,498
Fair Value, Inputs, Level 1, 2 and 3 |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 243,171 | 256,941 |
Fair Value, Inputs, Level 1, 2 and 3 | Cash and cash equivalents |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 8,833 | 3,475 |
Fair Value, Inputs, Level 1, 2 and 3 | Equity funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 77,614 | 32,540 |
Fair Value, Inputs, Level 1, 2 and 3 | U.S. treasuries and agencies |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 18,044 | 31,229 |
Fair Value, Inputs, Level 1, 2 and 3 | Corporate bond funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 138,680 | 189,697 |
Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 225,127 | 225,712 |
Fair Value, Inputs, Level 1 | Cash and cash equivalents |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 8,833 | 3,475 |
Fair Value, Inputs, Level 1 | Equity funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 77,614 | 32,540 |
Fair Value, Inputs, Level 1 | U.S. treasuries and agencies |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 1 | Corporate bond funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 138,680 | 189,697 |
Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 18,044 | 31,229 |
Fair Value, Inputs, Level 2 | Cash and cash equivalents |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 2 | Equity funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 2 | U.S. treasuries and agencies |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 18,044 | 31,229 |
Fair Value, Inputs, Level 2 | Corporate bond funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 3 | Cash and cash equivalents |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 3 | Equity funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 3 | U.S. treasuries and agencies |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Fair Value, Inputs, Level 3 | Corporate bond funds |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | 0 | 0 |
Hedge funds-investments measured at net asset value (“NAV”) as a practical expedient |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |
Defined benefit plan, plan assets, amount | $ 85,112 | $ 82,105 |

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