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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 29, 2013 | Jun. 30, 2012
Income Tax [Line Items] |  |
Effective income tax rate | 32.20% | 33.50%
Decrease in unrecognized tax benefits | $ 4.4 |
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 | 1.0 |
Increase in unrecognized tax benefits | $ 0.7 |

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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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