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Pensions and Other Post-retirement Benefits - Summary of Pension Plan Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy (Detail) - Pension Plan - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | $ 514,218 | $ 651,986 | $ 586,822
Fair Value, Measurements, Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 514,218 | 651,986 |
NAV | 132,390 | 221,615 |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 308,237 | 350,738 |
Fair Value, Measurements, Recurring | Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 69,137 | 75,422 |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 4,454 | 4,211 |
Fair Value, Measurements, Recurring | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 288,006 | 329,795 |
NAV | 44,583 | 66,897 |
Fair Value, Measurements, Recurring | Equity securities | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 243,423 | 262,898 |
Fair Value, Measurements, Recurring | Equity securities | Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Equity securities | Significant Unobservable Inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 132,659 | 161,965 |
NAV | 0 | 0 |
Fair Value, Measurements, Recurring | Fixed income securities | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 63,522 | 86,543 |
Fair Value, Measurements, Recurring | Fixed income securities | Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 69,137 | 75,422 |
Fair Value, Measurements, Recurring | Fixed income securities | Significant Unobservable Inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Pooled investment funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 79,853 | 146,081 |
NAV | 79,853 | 146,081 |
Fair Value, Measurements, Recurring | Pooled investment funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Pooled investment funds | Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Pooled investment funds | Significant Unobservable Inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Insurance contracts |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 4,454 | 4,211 |
NAV | 0 | 0 |
Fair Value, Measurements, Recurring | Insurance contracts | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Insurance contracts | Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Insurance contracts | Significant Unobservable Inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 4,454 | 4,211 |
Fair Value, Measurements, Recurring | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 9,246 | 9,934 |
NAV | 7,954 | 8,637 |
Fair Value, Measurements, Recurring | Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 1,292 | 1,297 |
Fair Value, Measurements, Recurring | Cash and cash equivalents | Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 0 | 0 |
Fair Value, Measurements, Recurring | Cash and cash equivalents | Significant Unobservable Inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | $ 0 | $ 0 |

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