Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Total revenue	$ 1,290	$ 769	$ 2,450	$ 1,689
North America [Member]
Total revenue	1,135	697	2,175	1,560
Asia [Member]
Total revenue	$ 155	$ 72	268	119
Other [Member]
Total revenue			$ 7	$ 10