Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Components of Long-Term Debt (Parenthetical) (Detail)

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Long-Term Debt - Components of Long-Term Debt (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Mar. 08, 2010
Components of long-term debt      
Unamortized discount $ 471    
Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]
     
Components of long-term debt      
Debt instrument interest rate stated, percentage 8.25%   8.25%
Unamortized discount $ 471 $ 583  
Debt instrument maturity period Mar. 01, 2018    
Option Two [Member] | Asset-based Revolving Credit Facility, Interest at LIBOR Plus a Margin of 1.25% to 1.75% or Base Rate Plus a Margin of 0.25% to 0.75%, Final Maturity December 2018 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 0.25%    
Option One [Member] | Asset-based Revolving Credit Facility, Interest at LIBOR Plus a Margin of 1.25% to 1.75% or Base Rate Plus a Margin of 0.25% to 0.75%, Final Maturity December 2018 [Member]
     
Components of long-term debt      
Debt instrument maturity period Dec. 31, 2018    
Applicable interest rate on the Credit Facility 1.25%    
Option One [Member] | Revolving Credit Facility, Interest at Alternate Base Rate Plus a Margin of 0.75% to 1.75%, or LIBOR Plus a Margin of 1.75% to 2.75%, Final Maturity June 2016 [Member]
     
Components of long-term debt      
Debt instrument maturity period Jun. 30, 2016    
Minimum [Member] | Option Two [Member] | Asset-based Revolving Credit Facility, Interest at LIBOR Plus a Margin of 1.25% to 1.75% or Base Rate Plus a Margin of 0.25% to 0.75%, Final Maturity December 2018 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 0.25%    
Minimum [Member] | Option Two [Member] | Revolving Credit Facility, Interest at Alternate Base Rate Plus a Margin of 0.75% to 1.75%, or LIBOR Plus a Margin of 1.75% to 2.75%, Final Maturity June 2016 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 1.75%    
Minimum [Member] | Option One [Member] | Asset-based Revolving Credit Facility, Interest at LIBOR Plus a Margin of 1.25% to 1.75% or Base Rate Plus a Margin of 0.25% to 0.75%, Final Maturity December 2018 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 1.25%    
Minimum [Member] | Option One [Member] | Revolving Credit Facility, Interest at Alternate Base Rate Plus a Margin of 0.75% to 1.75%, or LIBOR Plus a Margin of 1.75% to 2.75%, Final Maturity June 2016 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 0.75%    
Maximum [Member] | Option Two [Member] | Asset-based Revolving Credit Facility, Interest at LIBOR Plus a Margin of 1.25% to 1.75% or Base Rate Plus a Margin of 0.25% to 0.75%, Final Maturity December 2018 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 0.75%    
Maximum [Member] | Option Two [Member] | Revolving Credit Facility, Interest at Alternate Base Rate Plus a Margin of 0.75% to 1.75%, or LIBOR Plus a Margin of 1.75% to 2.75%, Final Maturity June 2016 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 2.75%    
Maximum [Member] | Option One [Member] | Asset-based Revolving Credit Facility, Interest at LIBOR Plus a Margin of 1.25% to 1.75% or Base Rate Plus a Margin of 0.25% to 0.75%, Final Maturity December 2018 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 1.75%    
Maximum [Member] | Option One [Member] | Revolving Credit Facility, Interest at Alternate Base Rate Plus a Margin of 0.75% to 1.75%, or LIBOR Plus a Margin of 1.75% to 2.75%, Final Maturity June 2016 [Member]
     
Components of long-term debt      
Applicable interest rate on the Credit Facility 1.75%