Goodwill and Intangibles - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		24 Months Ended
	Feb. 14, 2015	Feb. 15, 2014	Feb. 14, 2015	Feb. 15, 2014	Feb. 14, 2015
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 2,100,000	$ 1,500,000	$ 4,100,000	$ 2,500,000
Purchase of intangibles			10,000,000	11,112,000
Interamerican Motor Corporation [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Increased intangible assets related to acquisition					8,300,000
Customer Relationships [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Purchase of intangibles			$ 10,000,000