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Employee and Retiree Benefit Plans - Fair Value Measurements of Retirement Plan Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | $ 477,809 | $ 450,944
Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 278,515 | 273,447
Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 174,841 | 144,763
Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 24,454 | 32,734
U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 358,573 | 335,082
U.S. | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 278,515 | 273,447
U.S. | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 76,227 | 49,528
U.S. | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 3,831 | 12,106
U.S. | U.S. core equity |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 105,212 | 96,433
U.S. | U.S. core equity | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 105,212 | 96,433
U.S. | U.S. core equity | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | U.S. core equity | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | U.S. small/midcap |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 64,165 | 64,421
U.S. | U.S. small/midcap | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 64,165 | 64,421
U.S. | U.S. small/midcap | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | U.S. small/midcap | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | Other alternative strategies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 3,831 | 12,106
U.S. | Other alternative strategies | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | Other alternative strategies | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | Other alternative strategies | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 3,831 | 12,106
U.S. | International equity |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 31,820 | 44,672
U.S. | International equity | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 31,820 | 44,672
U.S. | International equity | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | International equity | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | Emerging market equity |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 10,525 | 13,541
U.S. | Emerging market equity | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 10,525 | 13,541
U.S. | Emerging market equity | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | Emerging market equity | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | U.S. fixed income |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 132,608 | 85,190
U.S. | U.S. fixed income | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 56,381 | 35,661
U.S. | U.S. fixed income | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 76,227 | 49,528
U.S. | U.S. fixed income | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | Cash and equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 10,412 | 18,719
U.S. | Cash and equivalents | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 10,412 | 18,719
U.S. | Cash and equivalents | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
U.S. | Cash and equivalents | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 119,236 | 115,862
Foreign Plans | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 98,613 | 95,234
Foreign Plans | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 20,623 | 20,628
Foreign Plans | Cash and equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 5,133 | 9,384
Foreign Plans | Cash and equivalents | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Cash and equivalents | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 5,133 | 9,384
Foreign Plans | Cash and equivalents | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Equity securities funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 24,389 | 23,877
Foreign Plans | Equity securities funds | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Equity securities funds | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 24,389 | 23,877
Foreign Plans | Equity securities funds | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Fixed income securities funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 23,930 | 30,727
Foreign Plans | Fixed income securities funds | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Fixed income securities funds | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 23,930 | 30,727
Foreign Plans | Fixed income securities funds | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Diversified pooled fund |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 45,162 | 31,246
Foreign Plans | Diversified pooled fund | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Diversified pooled fund | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 45,162 | 31,246
Foreign Plans | Diversified pooled fund | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 20,623 | 20,628
Foreign Plans | Other | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Other | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | 0 | 0
Foreign Plans | Other | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Retirement plan assets | $ 20,623 | $ 20,628

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