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Summary of Significant Accounting Policies (Details 3) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Summary of Significant Accounting Policies [Line Items] |  |
Deferred license fees | $ 1,248 | $ 1,921
Deferred license fees [Member] |  |
Summary of Significant Accounting Policies [Line Items] |  |
Deferred license fees | 1,089 | 1,812
Deferred AirBar revenues [Member] |  |
Summary of Significant Accounting Policies [Line Items] |  |
Deferred license fees | 137 | 109
Deferred sensor modules revenues [Member] |  |
Summary of Significant Accounting Policies [Line Items] |  |
Deferred license fees | $ 22 |

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