Goodwill and Other Intangible Assets - Schedule of Changes in Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 28, 2021	Aug. 29, 2020
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 4,533	$ 23,544
Total intangible assets and goodwill acquired	7,931	36,835
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 3,219	$ 12,697
Weighted average life	10 years	14 years 1 month 6 days
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 179	$ 594
Weighted average life	5 years	5 years 3 months 18 days