CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 31, 2013	Jul. 31, 2012
Accounts receivable, trade, allowance for doubtful accounts	$ 85	$ 344
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares Authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,400,000,000	1,400,000,000
Common stock, shares issued	43,970,878	43,926,622
Common stock, shares outstanding	43,970,878	43,926,622