Total Assets of Continuing Operations (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jul. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 396,926	$ 446,502
Operating Segments
Segment Reporting Information [Line Items]
Total assets	238,632	266,939
Operating Segments | Americas
Segment Reporting Information [Line Items]
Total assets	26,535	41,367
Operating Segments | Asia
Segment Reporting Information [Line Items]
Total assets	102,070	122,277
Operating Segments | Europe
Segment Reporting Information [Line Items]
Total assets	79,237	67,783
Operating Segments | e-Business Services
Segment Reporting Information [Line Items]
Total assets	30,790	35,512
Corporate-level activity
Segment Reporting Information [Line Items]
Total assets	$ 158,294	$ 179,563