Provision (Benefit) for Income Tax by Geographical Location (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before income taxes	$ (59,037)	$ 14,592	$ (8,868)
United States
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before income taxes	(58,692)	16,659	(7,518)
Foreign
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before income taxes	$ (345)	$ (2,067)	$ (1,350)