Summarized Financial Information of Continuing Operations by Operating Segment and Corporate-Level Activity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Segment Reporting Information [Line Items]
Net revenue	$ 164,700	$ 173,274	$ 194,011	$ 191,415	$ 181,001	$ 173,016	$ 203,436	$ 197,051	$ 723,400	$ 754,504	$ 713,947
Operating income (loss)	(4,167)	(5,138)	1,235	2,621	(5,675)	(6,760)	(8,526)	(7,271)	(5,449)	(28,232)	(34,861)
Total other income (expense)	(2,226)	(3,640)	581	(812)	(1,196)	(677)	(2,491)	(1,340)	(6,097)	(5,704)	11,533
Loss from continuing operations before income taxes									(11,546)	(33,936)	(23,328)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)									14,223	869	(7,742)
Operating Segments | Americas
Segment Reporting Information [Line Items]
Net revenue									299,026	268,490	249,940
Operating income (loss)									9,456	(230)	(14,108)
Operating Segments | Asia
Segment Reporting Information [Line Items]
Net revenue									176,592	212,963	218,880
Operating income (loss)									17,335	22,841	21,450
Operating Segments | Europe
Segment Reporting Information [Line Items]
Net revenue									209,550	237,222	211,319
Operating income (loss)									(12,319)	(22,091)	(15,718)
Operating Segments | All Other
Segment Reporting Information [Line Items]
Net revenue									38,232	35,829	33,808
Operating income (loss)									(249)	349	634
Corporate-level activity
Segment Reporting Information [Line Items]
Operating income (loss)									$ (19,672)	$ (29,101)	$ (27,119)