Stock Option Plan and Stock Based Compensation - Summary of Unvested Stock Options (Detail) - $ / shares	3 Months Ended
	May. 31, 2015	May. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Unvested Beginning Balance, Number of Options	79,760
New grants, Number of Options	43,426
Vested, Number of Options	(46,761)
Forfeited, Number of Options	0
Unvested Ending Balance, Number of Options	76,425
Unvested Beginning Balance, Weighted Average Grant Date Fair Value	$ 2.51
New grants, Weighted Average Grant Date Fair Value	2.24	$ 2.70
Vested, Weighted Average Grant Date Fair Value	2.58
Forfeited, Weighted Average Grant Date Fair Value	0
Unvested Ending Balance, Weighted Average Grant Date Fair Value	$ 1.86