Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Amortization expenses	$ 531	$ 2,450	$ 1,062	$ 4,872
Rockstar Patent Portfolio Acquired 7/24/13 [Member]
Amortization expenses	26	117	52	233
North South Patent Portfolio Acquired 9/10/13 [Member]
Amortization expenses	8	32	15	64
Rockstar Patent Portfolio Acquired 12/31/13 [Member]
Amortization expenses	$ 497	$ 2,301	$ 995	$ 4,575