Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2018	Oct. 31, 2017
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	225,000,000	125,000,000
Common stock, shares issued	92,280,169	69,492,816
Common stock, shares outstanding	92,280,169	69,492,816
Treasury stock, shares	182,962	88,861
Series B Preferred Stock [Member]
Preferred Stock, Liquidation Preference, Value	$ 64,020	$ 64,020
Series C Preferred Stock [Member]
Preferred Stock, Liquidation Preference, Value	$ 11,681	$ 33,300