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v3.19.3

Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 1,310 | $ 1,923 | $ 5,032 | $ 6,174
Revenues percentage | 100.00% | 100.00% | 100.00% | 100.00%
United States [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 548 | $ 1,101 | $ 2,510 | $ 3,033
Revenues percentage | 42.00% | 57.00% | 50.00% | 49.00%
Japan [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 498 | $ 623 | $ 1,515 | $ 2,119
Revenues percentage | 38.00% | 32.00% | 30.00% | 34.00%
Germany [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 106 | $ 195 | $ 477 | $ 604
Revenues percentage | 8.00% | 10.00% | 9.00% | 10.00%
China [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 49 | $ (67) | $ 177 | $ 130
Revenues percentage | 4.00% | (3.00%) | 4.00% | 2.00%
Taiwan [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 13 | $ 49 | $ 31 | $ 159
Revenues percentage | 1.00% | 3.00% | 1.00% | 3.00%
Singapore [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues |  |  | $ 2 |
Revenues percentage |  |  |  |
Sweden [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 7 |  | $ 6 | $ 10
Revenues percentage | 1.00% |  |  |
Canada [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues |  |  | $ 7 |
Revenues percentage |  |  |  |
South Korea [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 4 |  | $ 8 |
Revenues percentage |  |  |  |
Switzerland [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 52 |  | $ 109 |
Revenues percentage | 4.00% |  | 2.00% |
France [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues |  |  | $ 152 |
Revenues percentage |  |  | 3.00% |
India [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 32 |  | $ 32 |
Revenues percentage | 2.00% |  | 1.00% |
Spain [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues |  |  | $ 6 |
Revenues percentage |  |  |  |
Other [Member] |  |  |  |
Summary of net revenues by geographic region |  |  |  |
Total revenues | $ 1 | $ 22 | $ (1) | $ 119
Revenues percentage |  | 1.00% |  | 2.00%

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