Earnings (loss) per Common Share - Additional Information (Detail)	12 Months Ended								3 Months Ended
	Aug. 31, 2012	Aug. 31, 2012 Restricted Stock [Member]	Aug. 31, 2011 Restricted Stock [Member]	Aug. 31, 2010 Restricted Stock [Member]	Aug. 31, 2012 Stock Options [Member]	Aug. 31, 2011 Stock Options [Member]	Aug. 31, 2010 Stock Options [Member]	Aug. 31, 2011 Series B Voting Convertible Preferred Stock [Member]	May 31, 2012 Convertible Common Stock [Member]
Earnings Per Share [Line Items]
Shares included in weighted average common shares and equivalents computation of basic earnings per share								100,000
Shares converted from Series B Preferred Stock into company's common stock	1,000,000								1,000,000
Antidilutive weighted-average restricted stock awards/ options excluded from the calculation of diluted earnings (loss) per share		57,443	98,158	146,668	1,648,704	1,325,945	1,309,273