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Income Taxes - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Oct. 02, 2011
Dec. 29, 2013
Dec. 30, 2012
Dec. 30, 2011
Jan. 01, 2012
Income Tax [Line Items]              
Tax rate       27.40% 41.00%   37.90%
Effective income tax rate       30.50% 44.60%   40.60%
Uncertain tax positions       $ 2,800,000 $ 5,500,000    
Uncertain tax positions that would affect tax rate       2,800,000 3,000,000    
Time period that uncertain tax positions not expected to materially change       12 months      
Accrued interest related to uncertain tax positions       200,000 500,000    
Interest expense (credit)       (300,000) 100,000 (15,000)  
Reduction of liability for uncertain tax positions 3,400,000 200,000 900,000        
Decrease in income tax expense       900,000 200,000   900,000
Credit to income tax expense       400,000      
Decrease in corporate income tax expense due to state tax rate change       2,300,000      
Valuation allowance for deferred tax assets       3,553,000 3,231,000    
Valuation allowance included in net current income tax assets       $ 200,000      
Net operating loss carryforwards expiration ending year       2032      
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 Tax Legislation [Member] | Minimum [Member]
              
Income Tax [Line Items]              
Tax year open for examination       1995