Acquisitions and Acquisition-Related Contingent Consideration Acquisitions and Acquisition-Related Contingent Consideration (Details 1) (Tensilica, USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Tensilica
Schedule of Business Acquisitions, Pro Forma [Line Items]
Pro forma revenue	$ 364,870	$ 333,840	$ 729,353	$ 656,171
Pro forma net income	$ 25,998	$ 22,032	$ 96,429	$ 38,100

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration