v3.26.1
Pension Plans and Other Postretirement Benefits - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Sep. 27, 2025
Components of net periodic benefit costs included in operating expenses [Abstract]          
Contribution to defined pension benefit plan     $ 3,000 $ 3,000  
Settlement threshold amount       2,586  
Pension settlement charge     0 450  
Pension settlement charge $ 0 $ (450) 0 (450)  
Estimated obligation due to full withdrawal multi employer pension plans 17,440   17,440   $ 18,559
Pension Plans Defined Benefit [Member]          
Components of net periodic benefit costs included in operating expenses [Abstract]          
Defined benefit plan expected future benefit payments 4,000   4,000    
Contribution to defined pension benefit plan     3,000    
Pension settlement charge 0 $ (450) 0 $ (450)  
Post Retirement Benefits [Member]          
Components of net periodic benefit costs included in operating expenses [Abstract]          
Defined benefit plan expected future benefit payments $ 289   289    
Employer contribution for postretirement health care and life insurance     $ 179