Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2020	Oct. 31, 2019
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	225,000,000	225,000,000
Common stock, shares issued	211,052,401	193,608,684
Common stock, shares outstanding	211,052,401	193,608,684
Treasury stock, shares	34,194	42,496
Series B Preferred Stock [Member]
Preferred Stock, Liquidation Preference, Value	$ 64,020	$ 64,020