Leases and Rental Expenses (Narrative) (Details) - USD ($)	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Leases and Rental Expense [Abstract]
Initial terms of leases	20 years
Rent expense for all operating leases	$ 7,400,000	$ 9,700,000	$ 10,600,000
Operating sub-lease rental income	300,000	300,000	300,000
Finance lease cost	840,000.0	318,500	270,700
Finance lease, amortization expense	674,800	275,600	231,300
Finance lease, interest expense	165,200	$ 82,300	$ 87,200
Lease extension exercised, decrease in operating lease assets and liabilities	$ 3,800,000
Operating lease weighted average remaining lease term	14 years 4 months 24 days
Operating lease weighted average discount rate	4.20%
Finance lease weighted average discount rate	6.00%