OTHER GAINS (LOSSES) , NET - Components of Other Gains (Losses), Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Other Income and Expenses [Abstract]
Foreign currency exchange gains, net	$ 337	$ 1,055
Derecognition of accrued pricing liabilities	4,573	0
Gain, net on Trading Securities	0	1,876
Other, net	(307)	(708)
Other gains (losses), net	$ 4,603	$ 2,223