v3.26.3
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, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Other Postretirement Benefit Plans [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 33 $ 34 $ 97 $ 103
Interest cost $ 75 $ 88 $ 226 $ 264
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Amortization of prior service credit $ (256) $ (256) $ (768) $ (768)
Amortization of actuarial loss (gain) $ (86) $ (80) $ (258) $ (239)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Net benefit expense (income) $ (234) $ (214) $ (703) $ (640)
U.S. [Member] | Defined Benefit Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 5 5 15 14
Interest cost $ 1,970 $ 2,236 $ 5,908 $ 6,708
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Expected return on plan assets $ (2,494) $ (2,818) $ (7,482) $ (8,458)
Amortization of actuarial loss (gain) $ 224 $ 44 $ 672 $ 131
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Net benefit expense (income) $ (295) $ (533) $ (887) $ (1,605)
Foreign Defined Benefits Pension Plans [Member] | Defined Benefit Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 9 36 27 96
Interest cost $ 45 $ 484 $ 141 $ 1,425
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Expected return on plan assets   $ (555)   $ (1,636)
Amortization of prior service credit   (74)   (218)
Amortization of actuarial loss (gain) $ 3 $ 209 $ 8 $ 614
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Net benefit expense (income) $ 57 $ 100 $ 176 $ 281