Redeemable Preferred Stock - Redeemable Series B Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Oct. 31, 2021	Oct. 31, 2020	May 08, 2019	Mar. 31, 2005
Class Of Stock [Line Items]
Preferred stock, shares authorized			250,000
Common stock, shares issued	366,618,693	294,706,758
Series B Preferred Stock
Class Of Stock [Line Items]
Preferred stock, shares authorized	105,875			105,875
Preferred stock, liquidation preference per share	$ 1,000.00
Common stock, shares issued	64,020	64,020
Preferred Stock Shares Outstanding	64,020	64,020
Temporary equity, carrying amount, attributable to parent	$ 59,857	$ 59,857