Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Summary of net revenues by geographic region
Total revenues	$ 1,495	$ 1,310	$ 3,547	$ 5,032
Revenues percentage	100.00%	100.00%	100.00%	100.00%
United States [Member]
Summary of net revenues by geographic region
Total revenues	$ 486	$ 548	$ 1,340	$ 2,510
Revenues percentage	33.00%	42.00%	38.00%	50.00%
Japan [Member]
Summary of net revenues by geographic region
Total revenues	$ 395	$ 498	$ 1,229	$ 1,515
Revenues percentage	26.00%	38.00%	35.00%	30.00%
Germany [Member]
Summary of net revenues by geographic region
Total revenues	$ 130	$ 106	$ 274	$ 477
Revenues percentage	9.00%	8.00%	8.00%	9.00%
South Korea [Member]
Summary of net revenues by geographic region
Total revenues	$ 240		$ 267
Revenues percentage	16.00%		7.00%
China [Member]
Summary of net revenues by geographic region
Total revenues	$ 154	$ 49	$ 203	$ 177
Revenues percentage	10.00%	4.00%	5.00%	4.00%
Switzerland [Member]
Summary of net revenues by geographic region
Total revenues	$ 54	$ 52	$ 161	$ 109
Revenues percentage	4.00%	4.00%	4.00%	2.00%
Other [Member]
Summary of net revenues by geographic region
Total revenues	$ 36	$ 57	$ 72	$ 61
Revenues percentage	2.00%	3.00%	2.00%	1.00%
France [Member]
Summary of net revenues by geographic region
Total revenues				$ 152
Revenues percentage				3.00%