SEGMENT INFORMATION - Summarized Financial Information of Net Revenue from External Customers by Group of Services (Detail) - USD ($) $ in Thousands	12 Months Ended
Jul. 31, 2019	Jul. 31, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 819,830	$ 645,258
Supply Chain
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	332,928	345,900
Direct Marketing
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 486,902	$ 299,358

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration