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Note 6 - Inventories, Net (Tables)
6 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

March 31,

  

September 30,

 
  

2022

  

2021

 

Raw materials

 $8,280  $5,449 

Finished goods

  723   842 

Work in process

  1,381   877 

Inventories, gross

  10,384   7,168 

Reserve for obsolescence

  (742)  (752)

Inventories, net

 $9,642  $6,416