Goodwill and Intangibles - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment charge	$ 18,300,000
Amortization expense of intangible assets		2,900,000
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment charge		4,100,000
AutoAnything [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment charge	18,300,000
AutoAnything [Member] | Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment charge	$ 4,100,000