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Postretirement Benefit Plans - Defined Benefit Plans - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2026 USD ($)
Defined Benefit Plan Disclosure [Line Items]
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%
Defined Contribution Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance of trust assets	$ 354
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected payment related to qualified plan	880
Expected payment related to non-qualified plan	147
United States [Member] | Unfunded Plan [Member] | Non-qualified Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions or payments	$ 89

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