SEGMENT INFORMATION - Summarized Financial Information of Net Revenue from External Customers by Group of Services (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	$ 194,003	$ 193,921	$ 615,359	$ 450,181
Supply chain services
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	73,223	67,823	236,154	252,511
e-Business services
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	4,774	5,452	16,658	17,492
Direct Marketing
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	$ 116,006	$ 120,646	$ 362,547	$ 180,178