Revenue Recognition (Tables)

9 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Contract Assets and Contract Liabilities

The following table summarizes the balances of the Company's unbilled receivables (contract assets), which are reported in Other current assets, and its customer advances (contract liabilities), which are reported in Accrued expenses.     

	Sept 30, 2020			June 30, 2021
Unbilled receivables (contract assets)		$	458		500
Customer advances (contract liabilities)		(583)			(774)
Net contract liabilities		$	(125)		(274)