Share Based Payments - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended	9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012	Apr. 02, 2012 2012 Retention Plan	Nov. 30, 2013 2012 Retention Plan	Nov. 30, 2012 2012 Retention Plan	Nov. 30, 2013 Minimum	Nov. 30, 2012 Minimum	Nov. 30, 2013 Maximum	Nov. 30, 2012 Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-Free Interest Rate:								0.60%	0.50%	1.50%	0.70%
Stock options granted, term			10 years
Stock options vesting period			3 years
Annual percentage over three years			33.33%
Stock options weighted average grant date fair value			$ 1.66	$ 0.77
Shares available for future grants	3,300,000		3,300,000
Vesting dates of outstanding options								2013-11		2017-03
Expiration dates of options								2014-03		2023-09
Restricted stock awards requisite service period			3 years		2 years
Grant date fair value of shares vested			$ 1,100,000	$ 100,000
Preferred stock contributed by company					400,000
Compensation expenses	471,000	1,370,000	3,553,000	2,324,000		1,400,000	600,000
Unrecognized compensation cost	$ 2,700,000		$ 2,700,000
Compensation cost of weighted average period			1 year 3 months 12 days		2 years