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Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Jul. 31, 2013
Oct. 31, 2012
Statement of Financial Position [Abstract]    
Preferred Stock, Liquidation Preference, Value $ 64,020 $ 64,020
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 275,000,000 275,000,000
Common stock, shares issued 192,054,464 185,856,123
Common stock, shares outstanding 192,054,464 185,856,123
Treasury stock, shares 5,679 5,679