Concentration of Risk (Tables)

9 Months Ended

Sep. 30, 2019

Risks And Uncertainties [Abstract]

Schedules of Revenues by Customer Type

The following table shows our revenues by customer type during the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Direct customers	$	412	$	1,921	$	2,364	$	4,378
Indirect customers (distributors)		60		325		518		751
Total	$	472	$	2,246	$	2,882	$	5,129

Schedule of Concentration of Risk

During the three and nine months ended September 30, 2019 and 2018, the following customers each comprised greater than 10% of our total revenues:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
Customer 1		44	%		6	%		23	%		11	%
Customer 2		29	%		4	%		12	%		4	%
Customer 3		28	%		—	%		6	%		—	%
Customer 4		—	%		—	%		12	%		5	%
Customer 5		—	%		6	%		11	%		3	%
Customer 6		—	%		12	%		5	%		5	%
Customer 7		—	%		10	%		9	%		6	%
Customer 8		—	%		10	%		—	%		4	%

As of September 30, 2019 and December 31, 2018, the following customers each comprised greater than 10% of our total accounts receivable:

	September 30, 2019			December 31, 2018
Customer 1		97	%		—	%
Customer 2		—	%		55	%
Customer 3		—	%		22	%
Customer 4		—	%		21	%

Schedule of Geographic Concentration of Risk in Revenue

During the three and nine months ended September 30, 2019 and 2018, regional revenue based on customer locations which each comprised greater than 10% of our total revenues, consisted of the following:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
Italy		44	%		6	%		23	%		11	%
China		29	%		4	%		12	%		4	%
United States		27	%		47	%		60	%		51	%
France		—	%		15	%		—	%		14	%
Canada		—	%		10	%		—	%		4	%