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Accounts Receivable
3 Months Ended
Dec. 31, 2019
Receivables [Abstract]  
Accounts receivable
Accounts Receivable
Accounts receivable are summarized as follows:
 
December 31,
2019
 
September 30,
2019
Accounts receivable
$
247,178

 
$
262,491

Allowance for doubtful accounts
(5,142
)
 
(4,906
)
Receivables, net
$
242,036

 
$
257,585