Shareholders' Equity - Additional Information (Detail)		3 Months Ended	91 Months Ended
	May 31, 2016 USD ($)	May 31, 2016 USD ($)	May 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
Common stock shares repurchased | shares			718,511
Common stock average price, repurchased | $ / shares			$ 13.74
Total amount available to repurchase of shares	$ 10,100,000
Repurchase of common stock		$ 0