Pensions and Other Post-retirement Benefits - Summary of Pension Plan Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Insurance contracts | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total	$ 5,622	$ 4,454	$ 4,211
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Total	563,449	514,218	$ 651,986
Fair Value, Measurements, Recurring | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Total	563,449	514,218
NAV	104,639	132,390
Fair Value, Measurements, Recurring | Pension Plan | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total	378,573	308,237
Fair Value, Measurements, Recurring | Pension Plan | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total	74,615	69,137
Fair Value, Measurements, Recurring | Pension Plan | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total	5,622	4,454
Fair Value, Measurements, Recurring | Pension Plan | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total	327,699	288,006
NAV	45,441	44,583
Fair Value, Measurements, Recurring | Pension Plan | Equity securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total	282,258	243,423
Fair Value, Measurements, Recurring | Pension Plan | Equity securities | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Fair Value, Measurements, Recurring | Pension Plan | Equity securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Fair Value, Measurements, Recurring | Pension Plan | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Total	169,321	132,659
NAV	0	0
Fair Value, Measurements, Recurring | Pension Plan | Fixed income securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total	94,706	63,522
Fair Value, Measurements, Recurring | Pension Plan | Fixed income securities | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total	74,615	69,137
Fair Value, Measurements, Recurring | Pension Plan | Fixed income securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Fair Value, Measurements, Recurring | Pension Plan | Pooled investment funds
Defined Benefit Plan Disclosure [Line Items]
Total	50,553	79,853
NAV	50,553	79,853
Fair Value, Measurements, Recurring | Pension Plan | 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 | Pension Plan | Pooled investment funds | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Fair Value, Measurements, Recurring | Pension Plan | Pooled investment funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Fair Value, Measurements, Recurring | Pension Plan | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Total	5,622	4,454
NAV	0	0
Fair Value, Measurements, Recurring | Pension Plan | 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 | Pension Plan | Insurance contracts | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Fair Value, Measurements, Recurring | Pension Plan | Insurance contracts | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total	5,622	4,454
Fair Value, Measurements, Recurring | Pension Plan | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total	10,254	9,246
NAV	8,645	7,954
Fair Value, Measurements, Recurring | Pension Plan | Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total	1,609	1,292
Fair Value, Measurements, Recurring | Pension Plan | Cash and cash equivalents | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Fair Value, Measurements, Recurring | Pension Plan | Cash and cash equivalents | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total	$ 0	$ 0