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Property and Equipment - Property and Equipment (Detail) - USD ($)
Sep. 30, 2016
Sep. 30, 2015
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 24,808,000 $ 25,358,000
Less: Accumulated depreciation and amortization (19,569,000) (18,970,000)
Property and equipment, net 5,239,000 6,388,000
Land and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 3,323,000 3,323,000
Buildings and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 12,886,000 12,883,000
Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 8,599,000 $ 9,152,000