INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jul. 31, 2019	Jul. 31, 2018
Deferred tax assets:
Accruals and reserves	$ 21,297	$ 16,070
Tax basis in excess of financial basis of investments in affiliates	6,534	6,232
Tax basis in excess of financial basis for intangible and fixed assets	187	311
Net operating loss and capital loss carry forwards	469,735	468,129
Total gross deferred tax assets	497,753	490,742
Less: valuation allowance	(451,189)	(438,467)
Net deferred tax assets	46,564	52,275
Deferred tax liabilities:
Financial basis in excess of tax basis for intangible and fixed assets	(43,885)	(50,141)
Convertible Debt	(1,761)	(634)
Total gross deferred tax liabilities	(45,646)	(50,775)
Net deferred tax asset	$ 918	$ 1,500