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Property, Equipment and Improvements, Net (Details) - USD ($)
$ in Thousands
Dec. 30, 2016
Sep. 30, 2016
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross $ 895,069 $ 897,614
Accumulated depreciation and amortization (580,663) (577,941)
Property, equipment and improvements, net 314,406 319,673
Land    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 16,434 16,680
Buildings    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 90,160 91,194
Equipment    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 537,400 531,539
Leasehold Improvements    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 215,950 221,437
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross $ 35,125 $ 36,764