Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Patent Portfolios at December 31, 2015, net	$ 9,799
Amortization expenses	(531)
Patent Portfolios at March 31, 2016, net	$ 9,268	$ 9,799
Weighted average amortization period	4 years 4 months 17 days	4 years 7 months 17 days