Pension and Other Postretirement Benefits - Contributions for Pension and Other Postretirement Benefits (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Other Postretirement Benefit Plans [Member]
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Contribution	$ 189	$ 259
U.S. [Member] \| Defined Benefit Pension Plan [Member]
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Contribution	1,262	2,488
U.S. [Member] \| Defined Contribution Plan [Member]
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Contribution	1,113	2,220
U.S. [Member] \| Nonqualified [Member] \| Defined Benefit Pension Plan [Member]
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Contribution	476	574
Foreign Plans [Member] \| Defined Benefit Pension Plan [Member]
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Contribution	210	323
Foreign Plans [Member] \| Defined Contribution Plan [Member]
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Contribution	$ 186	$ 207