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Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended |  | 12 Months Ended
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Dec. 29, 2012 | Dec. 31, 2009 2009 Stock Incentive Plan | Dec. 29, 2012 2009 Stock Incentive Plan Low end of range | Dec. 29, 2012 2009 Stock Incentive Plan High end of range | Dec. 29, 2012 2009 Stock Incentive Plan Stock options | Dec. 29, 2012 2009 Stock Incentive Plan Full value awards | Dec. 31, 2011 2009 Stock Incentive Plan Full value awards | Jan. 01, 2011 2009 Stock Incentive Plan Full value awards | Dec. 29, 2012 2009 Stock Incentive Plan Market Stock Units | Dec. 31, 2011 2009 Stock Incentive Plan Market Stock Units | Dec. 29, 2012 2000 Stock Incentive Plan Low end of range | Dec. 29, 2012 2000 Stock Incentive Plan High end of range | Dec. 29, 2012 2000 Stock Incentive Plan Stock options High end of range | Dec. 29, 2012 2009 Employee Stock Purchase Plan | Dec. 31, 2011 2009 Employee Stock Purchase Plan | Jan. 01, 2011 2009 Employee Stock Purchase Plan | Dec. 29, 2012 2009 Employee Stock Purchase Plan Stock options and stock appreciation rights | Dec. 29, 2012 2009 Employee Stock Purchase Plan Full value awards | Dec. 29, 2012 Employee Stock Purchase Plan | Jan. 01, 2011 Employee Stock Purchase Plan
Stock-based compensation costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of plan |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares deducted for each share granted under 2009 Stock Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 1.55 |  |
Award vesting period |  |  | 3 years | 4 years |  |  |  |  | 3 years |  | 3 years | 8 years |  |  |  |  |  |  |  |
Minimum exercise price as percentage of fair market value of shares on the date of grant |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  | 85.00% |  |  |  |  | 85.00% |
Maximum term of offering |  |  |  |  |  |  |  |  |  |  |  |  |  | 24 months |  |  |  |  | 24 months |
Term of award |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |
Number of shares granted |  |  |  |  |  | 800,000 | 800,000 | 800,000 | 110,000 | 55,000 |  |  |  |  |  |  |  |  |  |
Shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 181,000 | 169,000 | 75,000 |  |  |  | 79,000
Net reduction in selling, general and administrative expense | $ 1.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average fair value for purchase rights granted (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.02 |  |  |  |  |  |
Fair value assumptions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 38.00% | 27.00% | 32.00% |  |  |  |
Risk-free interest rate % |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.20% | 0.20% | 0.40% |  |  |  |
Expected term |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 months | 11 months | 15 months |  |  |  |

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- Definition Represents the maximum term of an offering period for awards under the equity-based compensation plan. + References No definition available. + Details
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- Definition Represents the minimum exercise price of awards granted under the equity-based compensation plan, as percentage of fair market value of a share of entity's common stock on the date of grant. + References No definition available. + Details
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- Definition Represents the number of shares to be deducted from shares available for issuance for each share granted under the equity-based compensation plan. + References No definition available. + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made 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). + 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)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition 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). + 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)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Expected term of share-based compensation awards, 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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