Redeemable Preferred Stock - Redeemable Series B Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Apr. 30, 2024	Oct. 31, 2023
Redeemable Preferred Stock
Temporary equity, carrying amount, attributable to parent	$ 59,857	$ 59,857
Series B Preferred Stock
Redeemable Preferred Stock
Preferred stock, shares authorized	105,875
Preferred stock, liquidation preference per share	$ 1,000.00
Preferred stock, shares issued	64,020	64,020
Preferred stock shares outstanding	64,020	64,020
Temporary equity, carrying amount, attributable to parent	$ 59,900	$ 59,900
Dividends, preferred stock, cash	$ 1,600	$ 1,600