Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2019	Oct. 31, 2018
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	225,000,000	225,000,000
Common stock, shares issued	13,709,330	7,972,686
Common stock, shares outstanding	13,709,330	7,972,686
Treasury stock, shares	42,496	13,042
Series B Preferred Stock [Member]
Preferred Stock, Liquidation Preference, Value	$ 64,020	$ 64,020
Series C Preferred Stock [Member]
Preferred Stock, Liquidation Preference, Value	1,618	8,992
Series D Preferred Stock [Member]
Preferred Stock, Liquidation Preference, Value	$ 18,462	$ 30,680