Restatement of Previously Issued Financial Statements - Additional Information (Detail) (USD $)	9 Months Ended
	May 31, 2013	May 31, 2012
Change in operating assets and liabilities - accounts payable and accrued liabilities	$ (855,000)	$ (2,029,000)
As Previously Reported [Member]
Change in operating assets and liabilities - accounts payable and accrued liabilities		$ 956,000