Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Dec. 31, 2012
Income Tax Disclosure [Abstract]          
Penalty or interest liability accrued $ 0   $ 0   $ 0
Penalty or interest expense     0 0  
Effective tax rate 33.20% 30.80% 26.10% 31.60%  
Domestic tax credit related to 2012     1.1    
Domestic tax credit related to 2013     0.4    
Amount recognized in tax credit     $ 0.2