Stock Plans and Stock-Based Compensation Performance Based Stock Award Program (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		3 Months Ended
Mar. 31, 2012 2013 PSU [Member]	Mar. 29, 2014 2013 PSU [Member]	Mar. 29, 2014 2014 PSU [Member]
Restricted Stock and Performance Units, Additional Disclosure
Max PSU Shares		328	429,646
Granted (in dollars per share)	$ 40		$ 67,820
Granted (in shares)	163,847		214,823

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration