OTHER GAINS (LOSSES) , NET - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Component Of Other Expense Income Nonoperating [Line Items]
Other gains, net	$ 4,603	$ 2,223
Derecognition of accrued pricing liabilities	4,573	0
Net realized and unrealized foreign currency exchange gain (losses)	300	1,100
Other, net	(307)	(708)
Gains (losses) in trading securities	$ 0	1,876
Non Cash
Component Of Other Expense Income Nonoperating [Line Items]
Gains (losses) in trading securities		$ 1,900