Shareholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended
	May. 31, 2015	Dec. 19, 2014	Apr. 20, 2012	Oct. 20, 2008
Statement of Stockholders' Equity [Abstract]
Repurchase of common stock through a stock repurchase program				$ 5,000,000
Common stock shares repurchased	718,511
Common stock average price, repurchased	$ 13.74
Additional authorized amount available to repurchase shares		$ 10,000,000	$ 5,000,000
Total amount available to repurchase of shares	$ 10,100,000
Repurchase of common stock	$ 0