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Note 6 - Inventories (Tables)
12 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

September 30,

 
   

2022

   

2021

 

Raw materials

  $ 5,277     $ 5,449  

Finished goods

    844       842  

Work in process

    744       877  

Inventories, gross

    6,865       7,168  

Reserve for obsolescence

    (857 )     (752 )

Inventories, net

  $ 6,008     $ 6,416