SEGMENT INFORMATION - Summarized Financial Information of Net Revenue from External Customers by Group of Services (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 782,813	$ 819,830
Direct Marketing
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	444,360	486,902
Supply Chain
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 338,453	$ 332,928