Stock Option Plan and Stock Based Compensation (Details 3) (USD $)	12 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Summary of unvested stock options
Unvested at February 29, 2012, Number of Options	169,411
Unvested at February 29, 2012, Weighted Average Grant Date Fair Value	$ 3.31
New grants, Number of Options	72,707	82,743	62,500
New grants, Weighted Average Grant Date Fair Value	$ 2.83
Vested, Number of Options	(70,914)
Vested, Weighted Average Grant Date Fair Value	$ 3.13
Forfeited, Number of Options	(1,250)
Forfeited, Weighted Average Grant Date Fair Value	$ 1.58
Unvested at February 28, 2013, Number of Options	169,954	169,411
Unvested at February 28, 2013, Weighted Average Grant Date Fair Value	$ 3.20	$ 3.31