Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Summary of net revenues by geographic region
Total revenues	$ 6,646	$ 8,538
Revenues percentage	100.00%
United States [Member]
Summary of net revenues by geographic region
Total revenues	$ 3,158
Revenues percentage	48.00%
Japan [Member]
Summary of net revenues by geographic region
Total revenues	$ 2,134
Revenues percentage	32.00%
Germany [Member]
Summary of net revenues by geographic region
Total revenues	$ 617
Revenues percentage	9.00%
China [Member]
Summary of net revenues by geographic region
Total revenues	$ 374
Revenues percentage	6.00%
Switzerland [Member]
Summary of net revenues by geographic region
Total revenues	$ 105
Revenues percentage	2.00%
France [Member]
Summary of net revenues by geographic region
Total revenues	$ 152
Revenues percentage	2.00%
Other [Member]
Summary of net revenues by geographic region
Total revenues	$ 106
Revenues percentage	1.00%