Total Assets of Continuing Operations (Detail) - USD ($) $ in Thousands	Oct. 31, 2018	Jul. 31, 2018
Segment Reporting Information [Line Items]
Total assets	$ 827,727	$ 827,050
Operating Segments
Segment Reporting Information [Line Items]
Total assets	759,635	762,943
Operating Segments | Americas
Segment Reporting Information [Line Items]
Total assets	22,494	22,820
Operating Segments | Asia
Segment Reporting Information [Line Items]
Total assets	50,359	44,322
Operating Segments | Europe
Segment Reporting Information [Line Items]
Total assets	39,723	37,223
Operating Segments | Direct Marketing
Segment Reporting Information [Line Items]
Total assets	630,414	642,820
Operating Segments | e-Business
Segment Reporting Information [Line Items]
Total assets	16,645	15,758
Corporate-level activity
Segment Reporting Information [Line Items]
Total assets	$ 68,092	$ 64,107