v3.26.3
Benefit Plans - Defined Benefit Pension Plan (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Retirement Benefits [Abstract]        
Service cost – benefits earned during year $ 209 $ 269 $ 667 $ 800
Interest cost on projected benefit obligation 716 775 2,207 2,299
Expected return on plan assets $ (1,730) $ (1,620) $ (5,075) $ (4,808)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Employee Benefits Employee Benefits Employee Benefits Employee Benefits
Amortization of prior service cost $ 1 $ (9) $ (16) $ (26)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Employee Benefits Employee Benefits Employee Benefits Employee Benefits
Amortization of net (gain) loss $ (165) $ (48) $ (489) $ (144)
Net periodic pension income $ (969) $ (633) $ (2,706) $ (1,879)