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Financial Instruments and Risk Management - Effect of the Partnership's Derivative Instruments on the Condensed Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Jun. 27, 2015
Jun. 28, 2014
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member]        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) Recognized in OCI (Effective Portion) $ (128) $ (433) $ (855) $ (689)
Interest Rate Swaps [Member] | Interest Expense [Member] | Derivatives Designated as Hedging Instruments [Member]        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) Reclassified from Accumulated OCI into Income (Effective Portion) (342) (351) (1,043) (1,050)
Commodity-Related Derivatives [Member] | Cost of Products Sold [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative Instruments Gain Loss [Line Items]        
Unrealized Gains (Losses) Recognized in Income $ (37) $ 707 $ 2,035 $ 708