SEGMENT INFORMATION - Total Assets of Continuing Operations (Detail) - USD ($) $ in Thousands	Apr. 30, 2020	Jul. 31, 2019
Segment Reporting Information [Line Items]
Total assets	$ 784,666	$ 731,563
Operating Segments
Segment Reporting Information [Line Items]
Total assets	750,297	713,102
Operating Segments | Direct Marketing
Segment Reporting Information [Line Items]
Total assets	615,579	600,390
Operating Segments | Supply Chain
Segment Reporting Information [Line Items]
Total assets	134,718	112,712
Corporate-level activity
Segment Reporting Information [Line Items]
Total assets	$ 34,369	$ 18,461