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

March 31,

  

September 30,

 
  

2022

  

2021

 

Office furniture and equipment

 $1,355  $1,261 

Machinery and equipment

  1,380   1,270 

Leasehold improvements

  2,173   2,154 

Property and equipment, gross

  4,908   4,685 

Accumulated depreciation

  (3,182)  (2,930)

Property and equipment, net

 $1,726  $1,755