Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Long-Term Debt - Components of Long-Term Debt (Parenthetical) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 26, 2015
Sep. 27, 2014
Mar. 08, 2010
Components of long-term debt      
Unamortized discount $ 300    
Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]      
Components of long-term debt      
Unamortized discount $ 309 $ 471  
Debt instrument interest rate stated, percentage 8.25%   8.25%
Debt instrument maturity period Mar. 01, 2018    
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%