Quarterly report pursuant to Section 13 or 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
9 Months Ended
Jun. 27, 2015
Sep. 27, 2014
Jun. 28, 2014
Mar. 08, 2010
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%
Debt instrument maturity period Mar. 01, 2018      
Unamortized original issue discount $ 336 $ 471 $ 500  
LIBOR-Based Borrowings [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 margin rate on the credit facility 1.25%      
Base Rate Borrowings [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 margin rate on the credit facility 0.25%      
Minimum [Member] | LIBOR-Based Borrowings [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 margin rate on the credit facility 1.25%      
Minimum [Member] | Base Rate Borrowings [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 margin rate on the credit facility 0.25%      
Maximum [Member] | LIBOR-Based Borrowings [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 margin rate on the credit facility 1.75%      
Maximum [Member] | Base Rate Borrowings [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 margin rate on the credit facility 0.75%