Pension and Other Postretirement Benefits - Net Periodic Pension and Other Postretirement Benefit Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Pension Plan [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 10	$ 13	$ 29	$ 38
Interest cost	2,483	1,546	7,450	4,639
Expected return on plan assets	(3,596)	(3,302)	(10,788)	(9,905)
Amortization of prior service cost	2	2	5	5
Amortization of actuarial (gain) loss	30	558	91	1,674
Net benefit expense (income)	(1,071)	(1,183)	(3,213)	(3,549)
Defined Benefit Pension Plan [Member] | Foreign Defined Benefits Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	87	85	225	223
Interest cost	468	256	1,391	821
Expected return on plan assets	(487)	(463)	(1,446)	(1,484)
Amortization of prior service cost	(70)	(65)	(207)	(210)
Amortization of actuarial (gain) loss	152	75	451	242
Net benefit expense (income)	150	(112)	414	(408)
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	43	59	128	176
Interest cost	98	55	293	165
Amortization of prior service cost	(256)	(299)	(768)	(897)
Amortization of actuarial (gain) loss	(81)	6	(242)	19
Net benefit expense (income)	$ (196)	$ (179)	$ (589)	$ (537)