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Note 7 - Property and Equipment (Tables)
3 Months Ended
Dec. 31, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

December 31,

   

September 30,

 
   

2022

   

2022

 

Office furniture and equipment

  $ 1,436     $ 1,432  

Machinery and equipment

    1,404       1,391  

Leasehold improvements

    2,302       2,172  

Construction in progress

    -       104  

Property and equipment, gross

    5,142       5,099  

Accumulated depreciation

    (3,387 )     (3,342 )

Property and equipment, net

  $ 1,755     $ 1,757