Acqusitions and Acquisition-Related Contingent Consideration (Details) (USD $) In Thousands, unless otherwise specified	Jul. 02, 2012 Sigrity [Member]	Apr. 22, 2013 Tensilica [Member]	Apr. 22, 2013 Tensilica Existing Technology [Domain]	Apr. 22, 2013 Tensilica Agreements and Relationships [Member]	Apr. 22, 2013 Tensilica Tradename Trademark and Patents [Member]	May 23, 2013 Cosmic Circuit Private Limited [Member]	May 23, 2013 Cosmic Existing Technology [Member]	May 23, 2013 Cosmic Agreements and Relationships [Member]	May 23, 2013 Cosmic Tradename Trademark and Patents [Member]	Dec. 28, 2013 Other fiscal 2013 acquisitions [Member]	Dec. 28, 2013 Other Acquisitions Existing Technology [Member]	Dec. 28, 2013 Other Acquisitions Agreements and Relationships [Member]	Dec. 28, 2013 Other Acquisition Tradename Trademark and Patents [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Cash and cash equivalents		$ 26,331				$ 1,724				$ 149
Trade receivables		4,454				668				0
Property, plant and equipment		1,938				185				91
Other assets		46,832				1,681				0
Acquired intangibles	40,600		102,000	33,000	3,000		16,300	5,100	0		2,014	1,667	0
In-process technology		5,300				4,200				1,200
Goodwill	39,700	176,461				41,911				9,587
Total assets acquired		399,316				71,769				14,708
Deferred revenue	(3,800)	(8,100)				(129)				0
Other liabilities		(4,959)				(1,982)				(277)
Long-term deferred tax liabilities	(15,100)	(40,147)				(8,428)				0
Net assets acquired		$ 346,110				$ 61,230				$ 14,431