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Property and Equipment - Schedule of Property and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 158,431 $ 158,086
Accumulated depreciation and amortization (56,553) (57,747)
Property and equipment, net 101,878 100,339
Land [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 40,970 40,939
Building and Improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 84,726 81,212
Machinery and Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 23,405 26,334
Furniture and Fixtures [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 3,787 4,656
Vehicles [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 5,543 $ 4,945