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Note 6 - Property and Equipment (Details) (USD $)
Mar. 31, 2015
Sep. 30, 2014
Machinery and equipment $ 1,857,208us-gaap_PropertyPlantAndEquipmentGross $ 1,686,209us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation (1,443,301)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (1,326,125)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property and equipment, net 413,907us-gaap_PropertyPlantAndEquipmentNet 360,084us-gaap_PropertyPlantAndEquipmentNet
Machinery and Equipment [Member]    
Machinery and equipment 935,298us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
903,798us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
Furniture and Fixtures [Member]    
Machinery and equipment 853,997us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
720,548us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Leasehold Improvements [Member]    
Machinery and equipment $ 67,913us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
$ 61,863us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember