Leases - Additional Lease Costs (Details) $ in Thousands	12 Months Ended
	Aug. 29, 2020 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 2,463
Operating cash flows from financing leases	289
Financing cash flows from financing leases	362
Lease assets obtained in exchange for new lease liabilities:
Operating leases	1,179
Finance leases	$ 5,664
Weighted average remaining lease term:
Operating leases	8 years 8 months 12 days
Finance leases	7 years 9 months 18 days
Weighted average discount rate:
Operating leases	6.20%
Finance leases	6.20%
Unfavorable lease liability	$ 1,000