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Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	12 Months Ended
	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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