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Public Offerings - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
May. 22, 2013
May. 17, 2013
Sep. 26, 2015
Sep. 27, 2014
Sep. 28, 2013
Aug. 06, 2013
Aug. 02, 2013
Sale of Partnership Units [Line Items]              
Number of common units sold (in units)   2,700,000          
Price per common unit sold in a public offering (in dollars per unit)   $ 48.16          
Proceeds received from public offering, net     $ 0 $ 0 $ 143,444    
Public Offering [Member]              
Sale of Partnership Units [Line Items]              
Proceeds received from public offering, net   $ 124,684          
Over Allotment Option [Member]              
Sale of Partnership Units [Line Items]              
Number of common units sold (in units) 405,000            
Price per common unit sold in a public offering (in dollars per unit) $ 48.16            
Proceeds received from public offering, net $ 18,760            
Senior Note Due 2021 [Member]              
Sale of Partnership Units [Line Items]              
Repayments of borrowings           $ 23,863 $ 133,400