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Accounts Receivable
9 Months Ended
Jun. 30, 2020
Receivables [Abstract]  
Accounts Receivable

NOTE 7.            Accounts Receivable

The components of accounts receivable consisted of the following:

​

​

​

​

​

​

​

​

​

As of

(in thousands)

    

June 30, 2020

    

September 30, 2019

Accounts receivable, gross

​

$

20,157

​

$

18,645

Allowance for doubtful accounts

​

 

(303)

​

 

(148)

Accounts receivable, net

​

$

19,854

​

$

18,497

​

The allowance for doubtful accounts is based on the age of receivables and a specific identification of receivables considered at risk of collection.