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Note 7 - Inventories, Net (Tables)
9 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

June 30,

   

September 30,

 
   

2021

   

2020

 

Raw materials

  $ 5,557     $ 5,220  

Finished goods

    797       841  

Work in process

    791       456  

Inventories, gross

    7,145       6,517  

Reserve for obsolescence

    (723 )     (568 )

Inventories, net

  $ 6,422     $ 5,949