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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Oct. 31, 2017
Oct. 31, 2016
Allowance for Doubtful Accounts Receivable, Current $ 79 $ 193
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 125,000,000 75,000,000
Common stock, shares issued 69,492,816 35,174,424
Common stock, shares outstanding 69,492,816 35,174,424
Treasury stock, shares 88,861 21,527
Preferred Stock Class B [Member]    
Preferred Stock, Liquidation Preference, Value $ 64,020 $ 64,020
Series C Preferred Stock [Member]    
Preferred Stock, Liquidation Preference, Value $ 33,300