Redeemable Preferred Stock - Redemption and Voting Rights (Details) - Series B Preferred Stock	12 Months Ended
	Oct. 31, 2021
Class Of Stock [Line Items]
Percentage of voting rights	50.00%
Consecutive number of years	2 years
Percentage of aggregate voting power	100.00%
Number of trading days	20 days
Number of consecutive trading days	30 days
Percentage of conversion price	105.00%
Discount on market price of shares of common stock	5.00%
Preferred stock, voting rights	no voting rights
Minimum [Member]
Class Of Stock [Line Items]
Percentage of consideration excluding cash payments for fractional shares	90.00%
Common Stock [Member]
Class Of Stock [Line Items]
Number of trading days	5 days
Number of consecutive trading days	10 days