Segments and Geography Information - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
May 03, 2015 Segments	Apr. 27, 2014	Apr. 28, 2013
Segment Reporting [Abstract]
Number of reportable segments	1us-gaap_NumberOfReportableSegments
Segment Reporting Information
Revenues	$ 1,250,944us-gaap_Revenues	$ 1,156,833us-gaap_Revenues	$ 934,335us-gaap_Revenues
Long-lived assets	380,882us-gaap_NoncurrentAssets	326,858us-gaap_NoncurrentAssets
United States
Segment Reporting Information
Revenues	425,066	339,423	269,071
Long-lived assets	122,118	110,573
Malaysia
Segment Reporting Information
Revenues	148,258	185,197	183,299
Long-lived assets	54,480	56,007
China
Segment Reporting Information
Revenues	242,916	229,231	171,016
Long-lived assets	175,580	127,966
Rest of the World
Segment Reporting Information
Revenues	434,704	402,982	310,949
Long-lived assets	$ 28,704	$ 32,312

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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

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