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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Sep. 29, 2013
Sep. 30, 2012
Dec. 30, 2012
Income Tax [Line Items]          
Tax rate     28.80% 40.50%  
Effective income tax rate     31.10% 43.10%  
Uncertain tax positions $ 2.8 $ 5.1 $ 2.8 $ 5.1 $ 5.5
Uncertain tax positions that would affect tax rate 2.8 2.6 2.8 2.6 3.0
Time period that uncertain tax positions not expected to materially change     12 months    
Reduction of liability for uncertain tax positions 3.4 0.2      
Decrease in income tax expense 0.9 0.2      
Accrued interest related to uncertain tax positions 0.2 0.5 0.2 0.5 0.5
Interest expense     (0.3) 0.1  
Credit to income tax expense     0.4    
Decrease in corporate income tax expense due to state tax rate change 2.3        
Increase in valuation allowance       $ 1.2  
State [Member]
          
Income Tax [Line Items]          
State previous tax rate 6.90%        
State current tax rate after reduction 6.00%        
Tax rate after further reduction 5.00%        
Internal Revenue Service (IRS) [Member] | Minimum [Member]
          
Income Tax [Line Items]          
Tax year open for examination     2010    
State Jurisdiction [Member] | Minimum [Member]
          
Income Tax [Line Items]          
Tax year open for examination     1995