Provision for Income Taxes Differs from Amount Computed by Applying Federal Statutory Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014
Income Taxes [Line Items]
Statutory U.S. federal income tax rate	$ (1,327)	$ (2,022)
State income taxes, net of federal benefit	(114)	(69)
Research and experimentation credits	(15)	(50)
Valuation allowance	2,739	1,556
Non-deductible expenses	19	12
Other	(22)	87
Taxes at effective income tax rate	$ 1,280	$ (486)