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Note 19 - Major Customers, Suppliers and Related Information (Tables)
9 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
   
Three months ended June 30,
   
Nine months ended June 30,
 
   
2020
   
2019
   
2020
   
2019
 
Americas
  $
9,961,591
    $
5,661,496
    $
23,871,805
    $
23,430,521
 
Asia Pacific
   
947,759
     
2,681,229
     
3,128,822
     
3,827,716
 
Europe, Middle East and Africa
   
1,061,746
     
521,001
     
2,028,944
     
1,974,739
 
Total Revenues
  $
11,971,096
    $
8,863,726
    $
29,029,571
    $
29,232,976