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Note 19 - Major Customers, Suppliers and Related Information (Tables)
12 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
   
Years ended September 30,
 
   
2020
   
2019
 
Americas
  $
34,815
    $
27,981
 
Asia Pacific
   
5,716
     
6,578
 
Europe, Middle East and Africa
   
2,479
     
2,420
 
Total Revenues
  $
43,010
    $
36,979