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Note 7 - Property and Equipment (Tables)
12 Months Ended
Sep. 30, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

September 30,

 
   

2022

   

2021

 

Office furniture and equipment

  $ 1,432     $ 1,261  

Machinery and equipment

    1,391       1,270  

Leasehold improvements

    2,172       2,154  

Construction in progress

    104       -  

Property and equipment, gross

    5,099       4,685  

Accumulated depreciation and amortization

    (3,342 )     (2,930 )

Property and equipment, net

  $ 1,757     $ 1,755  
   

Years ended September 30,

 
   

2022

   

2021

 

Depreciation and amortization expense

  $ 403     $ 406