INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jul. 31, 2022	Jul. 31, 2021
Deferred tax assets:
Accruals and reserves	$ 4,295	$ 18,104
Tax basis in excess of financial basis for intangible and fixed assets	901	181
Lease liability	2,288	9,544
Interest expense disallowance	2,357	7,764
Credit carry forwards	25	28
Net operating loss and capital loss carry forwards	478,530	459,008
Total gross deferred tax assets	488,396	494,629
Less: valuation allowance	(485,212)	(456,610)
Net deferred tax assets	3,184	38,019
Deferred tax liabilities:
Financial basis in excess of tax basis for intangible and fixed assets	(69)	(28,593)
Right of use asset	2,154	9,015
Convertible debt	(917)	(1,342)
Total gross deferred tax liabilities	(3,140)	(38,950)
Net deferred tax assets	$ 44
Net deferred tax liabilities		$ (931)