Revenue Recognition (Tables)

3 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability

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, 2018				Dec 31, 2018
Unbilled receivables (contract assets)		$	321			371
Customer advances (contract liabilities)		(510		)		(490	)
Net contract liabilities		$	(189	)		(119	)