Goodwill and Intangible Assets - Additional Information (Detail)	12 Months Ended	6 Months Ended
	May 31, 2013	Nov. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill	3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill		15 years
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill		3 years