Condensed Consolidated Balance Sheets Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jul. 31, 2012	Oct. 31, 2011
Stockholders' equity (deficit):
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	290,000,000	290,000,000
Common stock, shares issued	100,192,289	97,440,436
Common stock, shares outstanding	100,192,289	97,440,436