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Note 3 - Accounts Receivable
9 Months Ended
Jun. 30, 2022
Notes to Financial Statements  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

3.   Accounts Receivable

 

Accounts receivable consist of the following:

 

  

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 

 

As of June 30, 2022, one customer represented approximately 10% of accounts receivable. As of September 30, 2021, two customers represented approximately 13% and 10% of accounts receivable.