PROPERTY AND EQUIPMENT - At Cost (Detail) - USD ($) $ in Thousands	Jul. 31, 2023	Jul. 31, 2022
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 4,154	$ 64,579
Less: accumulated depreciation and amortization	(456)	(61,045)
Property and equipment, net	3,698	3,534
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	1,388	12,632
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	606	9,994
Software
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	1,133	34,161
Computer hardware
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	400	5,317
Other
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 627	$ 2,475