Annual report pursuant to Section 13 and 15(d)

Derivative Instruments - Summary of Derivative Instruments Not Designated as Hedging Instruments Statements of Financial Performance (Detail)

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Derivative Instruments - Summary of Derivative Instruments Not Designated as Hedging Instruments Statements of Financial Performance (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 24, 2011
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]      
Total derivative instruments $ (958) $ 111 $ (9)
Commodity contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member]
     
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]      
Total derivative instruments $ (958) $ 111 $ (9)