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Note 3 - Accounts Receivable (Tables)
3 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

As of
December 31,

2022

  

As of
September 30,

2022

 

Accounts receivable

 $1,767  $1,332 

Allowance for doubtful accounts

  (178

)

  (150

)

Accounts receivable, net

 $1,589  $1,182