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Stock-Based Compensation (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Jan. 02, 2016 USD ($) item employee $ / shares shares | Jan. 03, 2015 $ / shares shares | Dec. 28, 2013 $ / shares shares
Stock-based compensation costs |  |  |
SG&A expense related to modifications to equity awards | $ | $ 2,300 |  |
Number of employee terminated | employee | 2 |  |
MSUs |  |  |
Stock-based compensation costs |  |  |
Number of shares granted | 89,000 |  |
Weighted-average fair value for purchase rights granted (in dollars per share) | $ / shares | $ 48.36 | $ 60.08 | $ 31.94
Fair value assumptions |  |  |
Cash consideration based upon achievement of specified levels of market conditions | $ | $ 0 |  |
2009 Stock Incentive Plan |  |  |
Stock-based compensation costs |  |  |
Number of share pools under the 2009 Plan | item | 2 |  |
Fair value assumptions |  |  |
Expected volatility (as a percent) | 31.00% | 33.00% | 32.00%
Risk-free interest rate % | 1.00% | 0.70% | 0.50%
Expected term | 2 years 10 months 24 days | 2 years 9 months 18 days | 2 years 10 months 24 days
2009 Stock Incentive Plan | Low end of range |  |  |
Stock-based compensation costs |  |  |
Award vesting period | 3 years |  |
2009 Stock Incentive Plan | High end of range |  |  |
Stock-based compensation costs |  |  |
Award vesting period | 4 years |  |
2009 Stock Incentive Plan | Stock options |  |  |
Stock-based compensation costs |  |  |
Minimum exercise price as percentage of fair market value of shares on the date of grant | 100.00% |  |
Stock options granted (in shares) | 0 | 0 | 0
2009 Stock Incentive Plan | Full value awards |  |  |
Stock-based compensation costs |  |  |
Number of shares granted | 900,000 | 800,000 | 1,100,000
2009 Stock Incentive Plan | Full value awards | Prior Pool |  |  |
Stock-based compensation costs |  |  |
Number of shares deducted for each share granted under 2009 Stock Incentive Plan | 1.55 |  |
2009 Stock Incentive Plan | MSUs |  |  |
Stock-based compensation costs |  |  |
Award vesting period | 3 years |  |
Number of shares granted | 89,000 | 76,000 | 132,000
2009 Stock Incentive Plan | Stock options and stock appreciation rights | Prior Pool |  |  |
Stock-based compensation costs |  |  |
Number of shares deducted for each share granted under 2009 Stock Incentive Plan | 1 |  |
2009 Stock Incentive Plan | Stock options, stock appreciation rights and full value awards | New Pool |  |  |
Stock-based compensation costs |  |  |
Number of shares deducted for each share granted under 2009 Stock Incentive Plan | 1 |  |
2000 Stock Incentive Plan | Low end of range |  |  |
Stock-based compensation costs |  |  |
Award vesting period | 3 years |  |
2000 Stock Incentive Plan | High end of range |  |  |
Stock-based compensation costs |  |  |
Award vesting period | 8 years |  |
2000 Stock Incentive Plan | Stock options | High end of range |  |  |
Stock-based compensation costs |  |  |
Term of award | 10 years |  |
2009 Employee Stock Purchase Plan |  |  |
Stock-based compensation costs |  |  |
Minimum exercise price as percentage of fair market value of shares on the date of grant | 85.00% |  |
Maximum term of offering | 24 months |  |
Shares issued | 210,000 | 204,000 | 190,000
Weighted-average fair value for purchase rights granted (in dollars per share) | $ / shares | $ 12.70 |  |
Fair value assumptions |  |  |
Expected volatility (as a percent) | 31.00% | 28.00% | 27.00%
Risk-free interest rate % | 0.20% | 0.20% | 0.10%
Expected term | 8 months | 15 months | 7 months

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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 + Details
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