Stockholders' Equity - Summary of stock options (Details) (USD $)	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Shares
Granted (in shares)	135,500	1,105,718
Exercised (in shares)	(501,645)	(47,566)
Cancelled (in shares)	(10,000)	(1,053,894)
Outstanding at end of period (in shares)	946,573	1,322,718	1,318,460
Exercisable at end of period (in shares)	435,714	549,425	1,204,660
Weighted Average Exercise Price
Granted (in dollars per share)	$ 1.06	$ 0.6
Exercised (in dollars per share)	$ (0.6)	$ (0.79)
Cancelled (in dollars per share)	$ (1.11)	$ (0.93)
Outstanding at end of period (in dollars per share)	$ 0.76	$ 0.67	$ 1.1
Exercisable at end of period (in dollars per share)	$ 0.82	$ 0.77	$ 1.11
Fair value vested at end of period (in dollars per share)	$ 0.41	$ 0.39	$ 0.36