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Summary of Significant Accounting Policies (Details 9) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Revenue |  |  |  |
License fees | $ 1,597 | $ 2,072 | $ 5,681 | $ 6,158
Sensor modules | 39 | 211 | 176 | 634
Non-recurring engineering | 287 | 22 | 317 | 174
Total Revenues | 1,923 | $ 2,305 | 6,174 | $ 6,966
Balances excluding revenue standard [Member] |  |  |  |
Revenue |  |  |  |
License fees | 1,919 |  | 5,939 |
Sensor modules | 39 |  | 176 |
Non-recurring engineering | 287 |  | 317 |
Total Revenues | 2,245 |  | 6,432 |
Impact of Revenue Standard [Member] |  |  |  |
Revenue |  |  |  |
License fees | (322) |  | (258) |
Sensor modules |  |  |  |
Non-recurring engineering |  |  |  |
Total Revenues | $ (322) |  | $ (258) |

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