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Note 3 - Accounts Receivable (Tables)
9 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

As of
June 30,

2022

  

As of
September 30,

2021

 

Accounts receivable

 $1,827  $1,403 

Allowance for doubtful accounts

  (72

)

  (33

)

Accounts receivable, net

 $1,755  $1,370