Redeemable Preferred Stock (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Apr. 30, 2024
Redeemable Preferred Stock
Preferred stock, par value			$ 0.01
Maximum
Redeemable Preferred Stock
Preferred stock, shares authorized			250,000
Series B Preferred Stock
Redeemable Preferred Stock
Preferred stock, shares authorized			105,875
Preferred stock, dividend rate, percentage	5.00%	5.00%	5.00%