Leases Schedule of Lease Expense and Other Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 04, 2020 USD ($)	Apr. 04, 2020 USD ($)
Leases [Abstract]
Amortization of right-of-use assets	$ 1,075	$ 2,269
Interest on lease liabilities	1,211	2,502
Operating lease expense	2,898	6,079
Other lease expense	1,139	1,259
Total lease expense	$ 6,323	$ 12,109
Weighted average remaining lease term, Finance Lease	13 years 4 months 24 days	13 years 4 months 24 days
Weighted average remaining lease term, Operating Lease	18 years 3 months 18 days	18 years 3 months 18 days
Weighted average discount rate, Finance Lease	17.80%	17.80%
Weighted average discount rate, Operating Lease	3.00%	3.00%
Operating cash flows used in finance leases	$ 1,125	$ 2,249
Operating cash flows used in operating leases	2,659	5,838
Finance cash flows used in finance leases	845	1,564
Right-of-use asset obtained in exchange for operating lease liability	6	7,509
Right-of-use asset obtained in exchange for finance lease liability	$ 83	$ 357