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Stockholders' Equity (Details 5) (Restricted stock units, USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011 | Jan. 01, 2011
Restricted stock units |  |  |  |
Restricted stock units outstanding, vested and expected to vest |  |  |  |
Restricted stock units outstanding, Number of Shares | 269,259 | 55,999 | 90,189 |
Restricted stock units outstanding, Weighted Average Remaining Contractual Life (years) | 10 months 10 days |  |  |
Restricted stock units outstanding, Aggregate Intrinsic Value | $ 2,604 |  |  |
Restricted stock units vested and expected to vest, Number of Shares | 243,471 |  |  |
Restricted stock units vested and expected to vest, Weighted Average Remaining Contractual Life (years) | 10 months 6 days |  |  |
Restricted stock units vested and expected to vest, Aggregate Intrinsic Value | $ 2,354 |  |  |

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- Definition Share based compensation arrangement by share based payment award equity instruments other than options vested and expected to vest intrinsic value. + References No definition available. + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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