Roll-forward of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at Beginning of Period	$ 52	$ 40
Additions: Charged to Costs and Expenses	17	27
Deductions	(53)	(15)
Balance at End of Period	$ 16	$ 52