v3.26.3
Pensions and Other Post-employment Benefits (Details) - USD ($)
 3 Months Ended 9 Months Ended
Oct. 02, 2026
Sep. 26, 2025
Oct. 02, 2026
Sep. 26, 2025
Components of net periodic benefit (credit) cost        
Contributions by employer $ 0 $ 0 $ 0 $ 0
Pension Benefits        
Components of net periodic benefit (credit) cost        
Service cost 283,000 315,000 863,000 909,000
Interest cost 1,837,000 1,932,000 5,516,000 5,769,000
Expected return on plan assets (2,363,000) (2,539,000) (7,106,000) (7,575,000)
Amortization of prior service (benefit) cost (21,000) (23,000) (65,000) (67,000)
Amortization of net loss (gain) 259,000 90,000 776,000 269,000
Net periodic benefit (credit) cost (5,000) (225,000) (16,000) (695,000)
Other Benefits        
Components of net periodic benefit (credit) cost        
Service cost 0 11,000 0 33,000
Interest cost 31,000 58,000 93,000 174,000
Expected return on plan assets 0 0 0 0
Amortization of prior service (benefit) cost 0 0 0 0
Amortization of net loss (gain) (104,000) (87,000) (312,000) (262,000)
Net periodic benefit (credit) cost $ (73,000) $ (18,000) $ (219,000) $ (55,000)