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Property, Equipment and Improvements, Net (Detail) - Property, equipment and improvements, net (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 8,398us-gaap_PropertyPlantAndEquipmentGross $ 8,446us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation and amortization (6,926)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (7,026)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, equipment and improvements, net 1,472us-gaap_PropertyPlantAndEquipmentNet 1,420us-gaap_PropertyPlantAndEquipmentNet
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 399us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember		 370us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 7,933us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember		 8,009us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
Automobiles    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 66us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AutomobilesMember		 $ 67us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AutomobilesMember