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Note 6 - Property and Equipment (Details) - Property and Equipment (USD $)
Dec. 31, 2014
Sep. 30, 2014
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,765,710us-gaap_PropertyPlantAndEquipmentGross $ 1,686,209us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation (1,386,765)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (1,326,125)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property and equipment, net 378,945us-gaap_PropertyPlantAndEquipmentNet 360,084us-gaap_PropertyPlantAndEquipmentNet
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Machinery and equipment 935,298us-gaap_MachineryAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
903,798us-gaap_MachineryAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Office furniture and equipment 762,499us-gaap_FurnitureAndFixturesGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
720,548us-gaap_FurnitureAndFixturesGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Leasehold improvements $ 67,913us-gaap_LeaseholdImprovementsGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
$ 61,863us-gaap_LeaseholdImprovementsGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember