DEFINED BENEFIT PENSION PLANS - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Retirement Benefits [Abstract]
Service cost	$ 365	$ 398
Interest costs	633	671
Expected return on plan assets	(492)	(529)
Amortization of net actuarial loss	127	125
Net periodic pension costs	$ 633	$ 665