Leases Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 03, 2020	Jun. 28, 2019
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases	$ 7,027
Operating cash flows from finance leases	1,641
Financing cash flows from finance leases	1,307	$ 809
Non-cash activities:
Operating lease right-of-use assets obtained in exchange for new lease liabilities	242
Financing lease assets obtained in exchange for new lease liabilities	$ 586