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Income Taxes - Income tax reconciliation (Details) (USD $)	12 Months Ended
	Feb. 28, 2013	Feb. 29, 2012
Income tax (benefit) reconciliation:
Expected federal income tax	$ 47,155	$ 486,150
State tax, net of federal	6,736	34,725
Permanent timing difference	19,409	28,319
State tax credits	(76,137)	(251,196)
Utilization of net operating loss carryforwards and research and development tax credits	(71,569)	(502,350)
(Decrease) in valuation allowance		(86,167)
Income tax (benefit)	(74,406)	(290,519)
Income tax (benefit) composition:
Current federal and state income taxes	5,585	46,844
Recognition of deferred tax assets	(3,854)	(86,167)
State tax credits	(76,137)	(251,196)
Income tax (benefit)	$ (74,406)	$ (290,519)

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