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Note 6 - Property and Equipment (Tables)
 12 Months Ended
Sep. 30, 2014
Note 6 - Property and Equipment (Tables) [Line Items]  
Property, Plant and Equipment [Table Text Block]
   

September 30,

 
   

2014

   

2013

 
                 

Machinery and equipment

  $ 903,798     $ 607,803  

Office furniture and equipment

    720,548       769,799  

Leasehold improvements

    61,863       55,298  

Property and equipment, gross

    1,686,209       1,432,900  

Accumulated depreciation

    (1,326,125 )     (1,195,523 )

Property and equipment, net

  $ 360,084     $ 237,377  
Depreciation Expense [Member]
  
Note 6 - Property and Equipment (Tables) [Line Items]  
Property, Plant and Equipment [Table Text Block]
   

Year ended September 30,

 
   

2014

   

2013

 

Depreciation expense

  $ 204,250     $ 122,990