Redeemable Preferred Stock - Dividends, Liquidations and Conversion Rights (Details) - USD ($)	1 Months Ended	12 Months Ended
	Mar. 31, 2005	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Class Of Stock [Line Items]
Dividends declared		$ 3,200,000	$ 3,200,000	$ 3,200,000
Series B Preferred Stock
Class Of Stock [Line Items]
Preferred stock, dividends per share, declared		$ 50.00
Dividends, preferred stock, cash		$ 3,200,000	3,200,000
Cumulative unpaid dividends		800,000	800,000
Dividends declared		$ 3,200,000	$ 3,200,000	$ 3,200,000
Preferred stock, dividend rate, percentage	5.00%	5.00%	5.00%	5.00%
Preferred stock, liquidation preference per share		$ 1,000.00
Payment on junior shares		$ 0
Preferred Stock, Liquidation Preference, Value		$ 64,020,000	$ 64,020,000
Shares of common stock issued upon conversion		0.591
Stock conversion price		$ 1,692.00
Percent of conversion price to exceed to exercise conversion right		150.00%
Number of trading days		20 days
Number of consecutive trading days		30 days