Summarized Financial Information of Continuing Operations by Operating Segment and Corporate-Level Activity (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Segment Reporting Information [Line Items]
Net revenue	$ 151,119	$ 117,568	$ 253,641	$ 238,895
Operating income (loss)	(4,576)	(1,504)	(8,406)	(7,146)
Total other expense	8,199	1,075	8,720	3,427
Loss before income taxes	(12,775)	(2,579)	(17,126)	(10,573)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	5,806	(257)	3,471	(4,583)
Operating Segments | Americas
Segment Reporting Information [Line Items]
Net revenue	13,764	27,183	28,603	53,061
Operating income (loss)	(2,285)	(1,720)	(4,484)	(5,576)
Operating Segments | Asia
Segment Reporting Information [Line Items]
Net revenue	36,290	38,861	79,802	81,734
Operating income (loss)	15,730	2,312	19,899	4,089
Operating Segments | Europe
Segment Reporting Information [Line Items]
Net revenue	37,893	44,910	76,283	90,091
Operating income (loss)	(3,464)	40	(6,324)	(2,551)
Operating Segments | Direct Marketing
Segment Reporting Information [Line Items]
Net revenue	56,913		56,913
Operating income (loss)	(2,825)		(2,825)
Operating Segments | All Other
Segment Reporting Information [Line Items]
Net revenue	6,259	6,614	12,040	14,009
Operating income (loss)	(1,350)	(889)	(2,795)	(545)
Corporate-level activity
Segment Reporting Information [Line Items]
Operating income (loss)	$ (10,382)	$ (1,247)	$ (11,877)	$ (2,563)