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Accounts Receivable, net - Schedule of Components of Accounts Receivable (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Sep. 30, 2021
Receivables [Abstract]    
Accounts receivable, gross $ 27,428 $ 32,109
Allowance for credit loss (225) (260)
Accounts receivable, net $ 27,203 $ 31,849