Postretirement Benefit Plans - Defined Contribution Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Contribution Plan Disclosure [Line Items]
Supplemental plan liability balances	$ 450,000	$ 446,000
Defined contribution plan expense	$ 10,949,000	13,832,000	$ 13,215,000
Percentage of union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions	85.00%
Percentage of us based union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions	100.00%
Statutory Plans [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan expense	$ 480,000	421,000	$ 219,000
Defined Contribution Plans [Member]
Defined Contribution Plan Disclosure [Line Items]
Balance of trust assets	$ 450,000	$ 376,000