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Stockholders' Equity - Summary of stock options (Details) - $ / shares
 12 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Shares    
Outstanding at beginning of period (in shares) 464,100 489,434
Granted (in shares) 400,000 73,500
Exercised (in shares) (10,000) (41,334)
Cancelled (in shares) (14,500) (57,500)
Outstanding at end of period (in shares) 839,600 464,100
Exercisable at end of period (in shares) 395,405 349,820
Weighted Average Exercise Price    
Outstanding at beginning of period (in dollars per share) $ 0.91 $ 0.97
Granted (in dollars per share) .91 1.16
Exercised (in dollars per share) (0.48) (0.61)
Cancelled (in dollars per share) (1.21) (1.08)
Outstanding at end of period (in dollars per share) 0.91 0.91
Exercisable at beginning of period (in dollars per share) 0.83 0.86
Exercisable at end of period (in dollars per share) 0.89 0.83
Fair value vested at end of period (in dollars per share) $ 0.32 $ 0.39