Shareholders' Equity (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended			108 Months Ended		3 Months Ended	12 Months Ended			12 Months Ended
	Mar. 02, 2013	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2013	Mar. 08, 2013	Mar. 02, 2013 Management Stock Loans [Member]	Aug. 31, 2013 Management Stock Loans [Member]	Aug. 31, 2013 Knowledge Capital [Member]	Aug. 31, 2011 Knowledge Capital [Member]	Aug. 31, 2005 Series A Preferred Stock [Member]
Shareholders' Equity [Line Items]
Shares of preferred stock authorized for issuance		14,000,000			14,000,000
Preferred stock issued		0			0
Preferred stock outstanding		0			0
Stock split											0.25
Common stock warrants issued						6,200,000
Common stock warrant exercise price						$ 8.00
Expiration date of warrants		March 8, 2013
Common stock issued from treasury stock for warrant exercise		1,700,000		600,000	2,300,000
Number of shares of common stock purchasable from warrant									5,900,000	2,200,000
Payments for exercise of common stock warrants		$ 55,000			$ 100,000
Expiration date of warrants									Mar. 08, 2013
Period after the date on which the warrant has been exercised									1 year
Period which company must notify intent to sell common shares									5 days
Period which company must wait to sell common shares if requested									120 days
Amount authorized under common stock purchase plan		10,000,000
Common stock purchase plan, amount which exceeded, will be paid for by cash		10,000,000
Number of shares purchased		73,320
Amount paid for shares purchased		800,000
Transfer of common stock shares as payment on the loans	3,300,000						3,300,000
Compensation cost		$ 3,589,000	$ 3,835,000	$ 2,788,000			$ 500,000	$ 498,000