INCOME TAXES - Components of Total Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 14,238	$ 13,848	$ 13,004	$ 12,671
Reduction to unrecognized tax benefits which offset tax credit and loss carryforwards	(809)	(1,916)
Accrued interest and penalties	2,516	1,758
Total unrecognized tax benefits	15,945	13,690
Short-term, included in “Income and other taxes”	3,180	2,891
Long-term	12,765	10,799
Total unrecognized tax benefits	$ 15,945	$ 13,690