Shareholders' Equity - Additional Information (Detail)		6 Months Ended	94 Months Ended
	Aug. 31, 2016 USD ($)	Aug. 31, 2016 USD ($) $ / shares shares	Aug. 31, 2016 USD ($) $ / shares shares
Statement of Stockholders' Equity [Abstract]
Repurchase of common stock through a stock repurchase program	$ 20,000,000	$ 20,000,000	$ 20,000,000
Repurchase of common stock | shares		103,705	822,216
Repurchase of common stock, average cost per share | $ / shares		$ 17.22	$ 14.18
Total amount available to repurchase of shares	$ 8,300,000