Retirement Plans - Fair Value of Plan Assets by Main Asset Category (Details) - USD ($) $ in Thousands	Sep. 28, 2025	Sep. 29, 2024
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	$ 43,553	$ 46,815
Equities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	692	3,739
Mutual funds
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	23,750	22,923
Liability driven investment funds
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	15,607	15,833
Bonds
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	2,647	2,657
Cash/other
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	$ 857	$ 1,663