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Property, Equipment and Improvements, Net (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Sep. 30, 2016
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross $ 939,477 $ 897,614
Accumulated depreciation and amortization (610,349) (577,941)
Property, equipment and improvements, net 329,128 319,673
Land    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 16,850 16,680
Buildings    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 91,745 91,194
Equipment    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 587,225 531,539
Leasehold Improvements    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross 217,840 221,437
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property, equipment and improvements, gross $ 25,817 $ 36,764