Leases (Supplemental Balance Sheet Lease Information) (Details) - USD ($) $ in Thousands	Mar. 29, 2025	Sep. 28, 2024
Leases [Abstract]
Operating lease right-of-use assets	$ 55,354	$ 52,591
Operating lease - Accrued liabilities and other	12,160	11,124
Operating lease - Other long-term liabilities	55,229	53,228
Total operating lease liabilities	$ 67,389	64,352
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	$ 136,922	123,314
Finance leases - Accumulated depreciation	(21,487)	(14,875)
Finance leases - Property, plant, and equipment, net	$ 115,435	108,439
Finance Lease - Property, plant and equipment, net	Property, plant and equipment, net
Finance leases - Accrued liabilities and other	$ 11,409	9,198
Finance leases - Other long-term liabilities	107,191	100,146
Total finance lease liabilities	$ 118,600	$ 109,344
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 3 months 18 days	6 years 2 months 12 days
Weighted average remaining lease term - Financing leases	18 years 7 months 6 days	20 years 1 month 6 days
Weighted average discount rate - Operating leases	5.30%	5.20%
Weighted average discount rate - Finance leases	6.40%	6.40%