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Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Property, Plant and Equipment [Line Items] |  |
Net license revenues | $ 7,954 | $ 8,684
Net revenues | $ 8,538 | $ 10,241
Percentage of Net revenues | 100.00% | 100.00%
Automotive [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Net license revenues | $ 1,627 | $ 2,148
Percentage of Net license revenues | 19.00% | 21.00%
Consumer electronics [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Net license revenues | $ 6,327 | $ 6,536
Percentage of Net license revenues | 74.00% | 64.00%
Sensor Modules [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Net revenues | $ 227 | $ 814
Percentage of Net revenues | 3.00% | 8.00%
Non Recurring Engineering [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Net revenues | $ 357 | $ 743
Percentage of Net revenues | 4.00% | 7.00%

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