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Note 6 - Property and Equipment (Tables)
9 Months Ended
Jun. 30, 2015
Depreciation Expense [Member]  
Notes Tables  
Property, Plant and Equipment [Table Text Block]
 
 
Nine months ended
 
 
 
June 30,
 
 
 
2015
 
 
2014
 
Depreciation expense
  $ 178,179     $ 143,211  
Property, Plant and Equipment [Table Text Block]
 
 
June 30,
 
 
September 30,
 
 
 
2015
 
 
2014
 
                 
Machinery and equipment
  $ 939,048     $ 903,798  
Office furniture and equipment
    883,072       720,548  
Leasehold improvements
    67,913       61,863  
Property and equipment, gross
    1,890,033       1,686,209  
Accumulated depreciation
    (1,434,646 )     (1,326,125 )
Property and equipment, net
  $ 455,387     $ 360,084