Capital Stock (Details Textual) (USD $)	12 Months Ended
	Aug. 31, 2011	Jul. 30, 2011
Additional Class of Stock (Textual) [Abstract]
Shareholder rights plan exercisable condition by common stock percentage		10.00%
Number of shares of common stock authorized to purchase	8,259,647
Conditions to be followed for rights to be exercisable or traded separately	public announcement that a person or group has acquired 10% or more of the Common Stock of the Company (including in the form of synthetic ownership through derivative positions), or a tender or exchange offer is made for 10% or more of the Common Stock of the Company. Should either of these conditions be met and the Rights become exercisable, each Right will entitle the holder to buy one one-thousandth of a share of Series B Junior Participating Preferred Stock at an exercise price of $70.00
Condition for rights to be redeemed by company	The Rights may be redeemed by the Company for $0.001 per Right at any time until the tenth day following the first public announcement of the acquisition of beneficial ownership of 10% of the Company’s Common Stock. The Plan exempts any person or group owning 10% or more of the Company’s Common Stock as of the announcement of the Plan. However, the Rights also will be exercisable if a person or group that already owns 10% or more of the Company’s Common Stock acquires any additional shares (including through derivatives, but other than pursuant to a dividend or distribution paid or made by the Company or pursuant to a stock split or reclassification).
Stockholders right plan expiration	Aug. 01, 2014
Preferred stock shares authorized	2,000,000
Preferred stock par value	$ 1.00
Shareholder Rights Plan [Member]
Additional Class of Stock (Textual) [Abstract]
Value per shareholders right	$ 0.001
Discount on company's common stock or an acquirers stock		50.00%
Adoption of Stockholder rights plan	Jul. 30, 2011
Stockholder Rights Plan, stock rights exercise price		70.00