Summarized Financial Information of Continuing Operations by Operating Segment and Corporate-Level Activity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Segment Reporting Information [Line Items]
Net revenue	$ 106,234us-gaap_SalesRevenueNet	$ 173,274us-gaap_SalesRevenueNet	$ 441,988us-gaap_SalesRevenueNet	$ 558,700us-gaap_SalesRevenueNet
Operating income (loss)	(7,552)us-gaap_OperatingIncomeLoss	(5,138)us-gaap_OperatingIncomeLoss	(5,759)us-gaap_OperatingIncomeLoss	(1,282)us-gaap_OperatingIncomeLoss
Total other income (expense)	(3,860)us-gaap_NonoperatingIncomeExpense	(3,640)us-gaap_NonoperatingIncomeExpense	(5,489)us-gaap_NonoperatingIncomeExpense	(3,871)us-gaap_NonoperatingIncomeExpense
Loss from continuing operations before income taxes	(11,412)	(8,778)	(11,248)	(5,153)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	(4,588)	228	3,113	13,469
Operating Segments \| Americas
Segment Reporting Information [Line Items]
Net revenue	32,732	74,429	167,772	229,791
Operating income (loss)	(2,771)	2,736	(1,292)	8,304
Operating Segments \| Asia
Segment Reporting Information [Line Items]
Net revenue	35,082	41,387	123,530	134,307
Operating income (loss)	895	2,342	8,925	14,001
Operating Segments \| Europe
Segment Reporting Information [Line Items]
Net revenue	30,720	48,423	125,761	165,790
Operating income (loss)	(2,700)	(4,439)	(5,030)	(8,934)
Operating Segments \| All Other
Segment Reporting Information [Line Items]
Net revenue	7,700	9,035	24,925	28,812
Operating income (loss)	(12)	(411)	510	98
Corporate-level activity
Segment Reporting Information [Line Items]
Operating income (loss)	$ (2,964)	$ (5,366)	$ (8,872)	$ (14,751)

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph 7

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+ References

No definition available.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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