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Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 29, 2012
Dec. 27, 2014
Dec. 28, 2013
Dec. 31, 2011
Income Tax Contingency [Line Items]        
Income tax benefit $ 1,400,000us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation      
Net unrecognized tax benefits 1,785,000us-gaap_UnrecognizedTaxBenefits 1,163,000us-gaap_UnrecognizedTaxBenefits 1,201,000us-gaap_UnrecognizedTaxBenefits 2,161,000us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits which would impact effective tax rate if recognized   900,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate    
Accrued interest related to uncertain tax positions   200,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued    
Minimum [Member]        
Income Tax Contingency [Line Items]        
Income tax examination by the Internal Revenue Service   2011    
Minimum [Member] | State Tax Authority [Member]        
Income Tax Contingency [Line Items]        
Income tax years under examination   2009    
Maximum [Member]        
Income Tax Contingency [Line Items]        
Income tax examination by the Internal Revenue Service   2012    
Maximum [Member] | State Tax Authority [Member]        
Income Tax Contingency [Line Items]        
Income tax years under examination   2012