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v3.20.1

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% |

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