Leases - Additional Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 26, 2023	Aug. 27, 2022	Aug. 28, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 5.0	$ 3.7	$ 2.6
Operating cash flows from financing leases	0.5	0.4	0.3
Financing cash flows from financing leases	$ 1.1	$ 0.9	$ 0.6
Weighted average remaining lease term:
Operating leases	7 years 3 months 18 days	8 years 1 month 6 days	8 years 1 month 6 days
Finance leases	5 years 2 months 12 days	6 years	6 years 9 months 18 days
Weighted average discount rate:
Operating leases	6.20%	5.80%	6.20%
Finance leases	6.40%	5.90%	6.30%