Segment, Geographic and Significant Customers (Significant Customers) (Detail)				3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
Oct. 26, 2012	Apr. 27, 2012	Oct. 28, 2011	Oct. 26, 2012 Arrow Electronics, Inc.	Oct. 28, 2011 Arrow Electronics, Inc.	Oct. 26, 2012 Arrow Electronics, Inc.	Oct. 28, 2011 Arrow Electronics, Inc.	Oct. 26, 2012 Avnet, Inc.	Oct. 28, 2011 Avnet, Inc.	Oct. 26, 2012 Avnet, Inc.	Oct. 28, 2011 Avnet, Inc.
Segment Reporting Information [Line Items]
Concentration risk, percentage	10.00%	10.00%	10.00%
Percentage of net revenues				20.00%	18.00%	18.00%	16.00%	15.00%	13.00%	14.00%	12.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611

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