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Income Taxes - Additional Information (Detail) - USD ($) | 6 Months Ended
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Jul. 04, 2015 | Jun. 28, 2014
Income Tax [Line Items] |  |
Effective income tax rate | 32.00% | 32.30%
Minimum [Member] |  |
Income Tax [Line Items] |  |
Decrease in unrecognized tax benefits | $ 0 |
Increase in unrecognized tax benefits | 0 |
Maximum [Member] |  |
Income Tax [Line Items] |  |
Decrease in unrecognized tax benefits | 900,000 |
Increase in unrecognized tax benefits | $ 400,000 |

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