Leases (Supplemental Balance Sheet Lease Information) (Details) - USD ($) $ in Thousands	Jun. 27, 2020	Sep. 28, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 61,833	$ 0
Operating lease - Accrued liabilities and other	13,890
Operating lease - Other long-term liabilities	52,893
Total operating leases liabilities	66,783
Finance leases - Property, plant and equipment, at cost	9,237
Finance leases - Accumulated depreciation	(1,095)
Finance leases - Property, plant, and equipment, net	8,142
Finance leases - Accrued liabilities and other	1,609
Finance leases - Other long-term liabilities	7,731
Total finance lease liabilities	$ 9,340
Weighted average remaining lease term - Operating leases	7 years 3 months 18 days
Weighted average remaining lease term - Financing leases	15 years
Weighted average discount rate - Operating leases	4.70%
Weighted average discount rate - Finance leases	4.80%