Leases (Supplemental Balance Sheet Lease Information) (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Sep. 30, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 59,489	$ 56,067
Operating lease - Accrued liabilities and other	11,687	11,283
Operating lease - Other long-term liabilities	59,306	56,398
Total operating lease liabilities	$ 70,993	67,681
Operating leases - Accrued liabilities and other	Accrued Liabilities, Current
Operating leases - Other long-term liabilities	Other Liabilities, Noncurrent
Total operating lease liabilities	Liabilities
Finance leases - Property, plant and equipment, at cost	$ 89,862	85,324
Finance leases - Accumulated depreciation	(13,256)	(10,913)
Finance leases - Property, plant, and equipment, net	$ 76,606	74,411
Finance Lease - Property, plant and equipment, net	Property, plant and equipment, net
Finance leases - Accrued liabilities and other	$ 5,968	5,621
Finance leases - Other long-term liabilities	73,661	71,225
Total finance lease liabilities	$ 79,629	$ 76,846
Finance leases - Accrued liabilities and other	Accrued Liabilities, Current
Finance leases - Other long-term liabilities	Other Liabilities, Noncurrent
Total finance lease liabilities	Liabilities
Weighted average remaining lease term - Operating leases	6 years 8 months 12 days	6 years 10 months 24 days
Weighted average remaining lease term - Financing leases	23 years	23 years 1 month 6 days
Weighted average discount rate - Operating leases	5.20%	5.00%
Weighted average discount rate - Finance leases	6.50%	6.50%