REVENUE RECOGNITION - Disaggregated Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 156,047	$ 215,452	$ 325,981	$ 440,605
Marketing solutions offerings
Disaggregation of Revenue [Line Items]
Revenues	91,155	123,117	196,863	256,120
Supply chain management services
Disaggregation of Revenue [Line Items]
Revenues	64,342	91,911	128,129	183,616
Other
Disaggregation of Revenue [Line Items]
Revenues	550	424	989	869
Products
Disaggregation of Revenue [Line Items]
Revenues	91,155	123,117	196,863	256,120
Products | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	91,155	123,117	196,863	256,120
Services
Disaggregation of Revenue [Line Items]
Revenues	64,892	92,335	129,118	184,485
Services | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	64,892	92,335	129,118	184,485
Direct Marketing
Disaggregation of Revenue [Line Items]
Revenues	91,155	123,117	196,863	256,120
Direct Marketing | Marketing solutions offerings
Disaggregation of Revenue [Line Items]
Revenues	91,155	123,117	196,863	256,120
Direct Marketing | Supply chain management services
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Direct Marketing | Other
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Direct Marketing | Products | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	91,155	123,117	196,863	256,120
Direct Marketing | Services | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Supply Chain
Disaggregation of Revenue [Line Items]
Revenues	64,892	92,335	129,118	184,485
Supply Chain | Marketing solutions offerings
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Supply Chain | Supply chain management services
Disaggregation of Revenue [Line Items]
Revenues	64,342	91,911	128,129	183,616
Supply Chain | Other
Disaggregation of Revenue [Line Items]
Revenues	550	424	989	869
Supply Chain | Products | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Supply Chain | Services | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	$ 64,892	$ 92,335	$ 129,118	$ 184,485