INCOME TAXES - Difference of Income Tax Expense Attributable to Income from Continuing Operations and Expense Computed using U.S. Federal Income Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Income Tax Disclosure [Abstract]
Computed expected income tax expense (benefit)	$ (13,041)	$ (9,467)
Increase (decrease) in income tax expense resulting from:
Change in valuation allowance	16,158	(329,415)
Foreign dividends	0	7,379
Foreign tax rate differential	(593)	(1,948)
Federal rate change	0	280,438
Nondeductible goodwill impairment	0	191
Nondeductible expenses	2,484	(15,852)
Foreign withholding taxes	336	1,961
Addition (reversal) of uncertain tax position reserves	645	(48)
State benefit of U.S. Loss	0	(4,654)
State income taxes, net of federal benefit	113	0
Other	(1,432)	213
Total tax provision	$ 4,670	$ (71,202)