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Note 9 - Goodwill and Intangible Assets (Tables)
3 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
   
December 31,
   
September 30,
 
   
2020
   
2020
 
Developed technology
  $
3,297
    $
655
 
Customer relationships
   
990
     
627
 
Trade name portfolio
   
238
     
228
 
Non-compete agreements
   
258
     
247
 
Patents
   
72
     
72
 
     
4,855
     
1,829
 
Accumulated amortization
   
(1,112
)    
(886
)
    $
3,743
    $
943
 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Fiscal year ending September 30,
 
 
 
 
2021 (remaining nine months)
  $
501
 
2022
   
664
 
2023
   
630
 
2024
   
615
 
2025
   
480
 
Thereafter
   
853
 
Total estimated amortization expense
  $
3,743