Share Based Payments - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013	Apr. 02, 2012 2012 Retention Plan	Aug. 31, 2014 2012 Retention Plan	Aug. 31, 2013 2012 Retention Plan	Aug. 31, 2014 Minimum	Aug. 31, 2013 Minimum	Aug. 31, 2014 Maximum	Aug. 31, 2013 Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from Stock Options Exercised			$ 300,000	$ 100,000
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options			100,000	0.00
Risk-Free Interest Rate:								1.20%	0.60%	1.50%	1.30%
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			$ 1.64	$ 1.36
Shares available for future grants	3,200,000		3,200,000
Vesting dates of outstanding options								2014-11		2018-03
Expiration dates of options								2015-03		2024-07
Restricted stock awards requisite service period			3 years		2 years
Grant date fair value of shares vested			3,600,000	400,000
Preferred stock contributed by company					400,000
Compensation expenses	583,000	2,419,000	1,531,000	3,082,000		400,000	1,500,000
Unrecognized compensation cost	$ 2,800,000		$ 2,800,000
Compensation cost of weighted average period			1 year 9 months 0 days