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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 26, 2012
Accounting Policies [Abstract] |
Weighted-average assumptions for the grants | We used the following weighted-average assumptions for the grants:
| Fiscal Year Ended
| December 28, 2011 |  | December 29, 2010
Dividend yield | 0.0 | % |  | 0.0 | %
Expected volatility | 60.3 | % |  | 60.3 | %
Risk-free interest rate | 2.0 | % |  | 2.2 | %
Weighted-average expected term | 4.7 years |  |  | 4.7 years |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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