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Note 15 - Major Customers, Suppliers, Segment and Related Information (Tables)
12 Months Ended
Sep. 30, 2017
Notes Tables  
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
   
Years ended September 30,
 
   
2017
   
2016
 
Americas
  $
8,688,005
    $
7,582,545
 
Europe, Middle East and Africa
   
1,439,157
     
1,035,559
 
Asia Pacific
   
10,187,016
     
7,742,901
 
Total Revenues
  $
20,314,178
    $
16,361,005