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Pension Benefits - Net Periodic Pension Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Components of net periodic pension cost    
Service cost-benefits earned during the period $ 1,098 $ 1,288
Interest cost on projected benefit obligation 2,063 1,899
Expected return on plan assets (3,135) (2,930)
Amortization of unrecognized (gain) loss (75) (11)
Net periodic pension cost (49) 246
Employer contributions 0 $ 0
Contributions made for the remainder $ 2,500