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Defined Benefit Pension Plan - Fair Value Hierarchy of Benefit Plan Assets (Details) - Pension Plan - USD ($)
$ in Thousands
Sep. 28, 2025
Sep. 29, 2024
Sep. 24, 2023
Defined Benefit Plan Disclosure [Line Items]      
Pension assets $ 186,352 $ 193,192 $ 210,031
NAV | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0 0  
NAV | Common/collective funds      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 181,168    
NAV | Hedge fund investments      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 1,934 5,931  
NAV | Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets   5,043  
Level 1 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 3,261 3,191  
Level 1 | Common/collective funds      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0    
Level 1 | Hedge fund investments      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0 0  
Level 1 | Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets   0  
Level 2 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0 0  
Level 2 | Common/collective funds      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0    
Level 2 | Hedge fund investments      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0 0  
Level 2 | Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets   179,042  
Level 3 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0 0  
Level 3 | Common/collective funds      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets 0    
Level 3 | Hedge fund investments      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets $ 0 0  
Level 3 | Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Pension assets   $ 0