Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2019

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Schedule of Accounts Receivable

Accounts receivable consisted of the following:

December 31	2019		2018
Non-U.S. government	$	1,847	$	2,035
U.S. government	1,076		1,189
Commercial	621		535
Total accounts receivable	$	3,544	$	3,759