Acquisitions (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended	0 Months Ended
Dec. 29, 2013	Dec. 29, 2013 Developed technology [Member]	Dec. 29, 2013 Customer relationships [Member]	Dec. 29, 2013 Trade name [Member]	Feb. 21, 2013 Verinata [Member]	Feb. 21, 2013 Verinata [Member] Developed technology [Member]	Feb. 21, 2013 Verinata [Member] Customer relationships [Member]	Feb. 21, 2013 Verinata [Member] Trade name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful lives of intangible assets acquired in period (in years)		12 years	4 years	2 years		13 years	5 years	2 years
Fair Value	$ 271,135	$ 249,900	$ 7,990	$ 2,200	$ 176,490	$ 170,200	$ 4,690	$ 1,600

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration