Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Patent Portfolios and Patent Rights at beginning	$ 4,951
Patent Portfolios and Patent Rights at ending	4,613	$ 4,951
Patents [Member]
Patent Portfolios and Patent Rights at beginning	4,951
Amortization expenses	338
Patent Portfolios and Patent Rights at ending	$ 4,613	$ 4,951
Weighted average amortization period	3 years 4 months 28 days	3 years 7 months 24 days