Income Before Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before income taxes	$ 14,592	$ (8,868)	$ 3,438
United States
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before income taxes	16,659	(7,518)	4,305
Foreign
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income (loss) before income taxes	$ (2,067)	$ (1,350)	$ (867)