Goodwill and Intangibles - Schedule of Carrying Amounts of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 29, 2020	Aug. 31, 2019
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 29,376	$ 30,246
Accumulated Amortization	(27,933)	(24,630)
Net Carrying Amount	$ 1,443	5,616
Minimum [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Maximum [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Technology [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount		870
Accumulated Amortization		$ (870)
Technology [Member] | Minimum [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Estimated Useful Life		3 years
Technology [Member] | Maximum [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Estimated Useful Life		5 years
Customer Relationships [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 29,376	$ 29,376
Accumulated Amortization	(27,933)	(23,760)
Net Carrying Amount	$ 1,443	$ 5,616
Customer Relationships [Member] | Minimum [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years	3 years
Customer Relationships [Member] | Maximum [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years	10 years