Stock Option Plan and Stock Based Compensation - Summary of Unvested Stock Options (Detail) - $ / shares	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 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	31,418	36,155
Vested, Number of Options	(46,761)
Forfeited, Number of Options	0
Unvested Ending Balance, Number of Options	76,425	79,760
Unvested Beginning Balance, Weighted Average Grant Date Fair Value	$ 2.51
New grants, Weighted Average Grant Date Fair Value	2.24	$ 2.70	$ 1.96
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	$ 2.32	$ 2.51