DEBT - Summary of Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2023	Apr. 30, 2022	Jul. 31, 2023	Jul. 31, 2022
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	$ 265		$ 2,588	$ 3,120
Umpqua Revolver
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	0		36	212
Other
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	4		20	68
7.50% Convertible Senior Note due September 1, 2024 | SPHG Holdings
Interest Expense, Debt [Line Items]
Debt instrument, interest expense		$ 2,500	300	2,800
7.50% Convertible Senior Note due September 1, 2024 | SPHG Holdings | Interest expense related to contractual interest coupon on the SPHG Note
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	261		844	1,136
7.50% Convertible Senior Note due September 1, 2024 | SPHG Holdings | Interest expense related to accretion of the discount on the SPHG Note
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	$ 0		$ 1,688	$ 1,704