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Income Taxes (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 27, 2014 | Jun. 28, 2014 | Sep. 28, 2013 | Jun. 29, 2013 | Sep. 27, 2014 | Sep. 28, 2013
Income Taxes |  |  |  |  |  |
Effective tax rate (as a percent) | 42.80% |  | 44.00% |  | 44.10% | 40.80%
Non-cash tax expense |  | $ 0.8 |  |  |  |
Tax adjustment |  |  |  | $ 0.3 |  |

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