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Property and Equipment - Property and Equipment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Sep. 30, 2015
Property, Plant and Equipment [Line Items]    
Equipment $ 1,236 $ 1,052
Less: accumulated depreciation (940) (733)
Property and equipment, net 296 319
Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Equipment 343 318
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Equipment 123 123
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Equipment 349 289
IT Infrastructure [Member]    
Property, Plant and Equipment [Line Items]    
Equipment 61 61
Software [Member]    
Property, Plant and Equipment [Line Items]    
Equipment $ 360 $ 261