Investments and Fair Value Measurements-AFS Realized Gains and Losses (Details 6) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Gross realized gains and (losses) on sales of available-for-sale securities
Gross realized gains	$ 4,724	$ 3,867	$ 36,762
Gross realized losses	$ (2,349)	$ (898)	$ (2,213)

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563

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