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Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Sep. 30, 2014
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 155,269 $ 158,431
Accumulated depreciation and amortization (56,282) (56,553)
Property and equipment, net 98,987 101,878
Land [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 43,090 40,970
Building and Improvements [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 78,425 84,726
Machinery and Equipment [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 24,709 23,405
Furniture and Fixtures [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 3,199 3,787
Vehicles [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 5,846 $ 5,543