Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Amortization expenses	$ 343	$ 531	$ 681	$ 1,062
7/24/13 - Rockstar Patent Portfolio Acquired [Member]
Amortization expenses	18	26	35	52
9/10/13 - North South patent portfolio Acquired [Member]
Amortization expenses	5	8	11	15
12/31/13 - Rockstar Patent Portfolio Acquired [Member]
Amortization expenses	$ 320	$ 497	$ 635	$ 995