Leases (Supplemental Balance Sheet Lease Information) (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Sep. 30, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 57,074	$ 56,067
Operating lease - Accrued liabilities and other	11,395	11,283
Operating lease - Other long-term liabilities	56,807	56,398
Total operating lease liabilities	$ 68,202	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	$ 98,707	85,324
Finance leases - Accumulated depreciation	(15,224)	(10,913)
Finance leases - Property, plant, and equipment, net	$ 83,483	74,411
Finance Lease - Property, plant and equipment, net	Property, plant and equipment, net
Finance leases - Accrued liabilities and other	$ 7,139	5,621
Finance leases - Other long-term liabilities	79,963	71,225
Total finance lease liabilities	$ 87,102	$ 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 6 months	6 years 10 months 24 days
Weighted average remaining lease term - Financing leases	21 years 3 months 18 days	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%