Goodwill and Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Amortization expenses	$ 2,449	$ 2,449	$ 4,871	$ 4,878
7/24/13 - Rockstar Patent Portfolio Acquired [Member]
Amortization expenses	117	117	233	233
9/10/13 - North South patent portfolio Acquired [Member]
Amortization expenses	32	32	64	64
12/31/13 - Rockstar Patent Portfolio Acquired [Member]
Amortization expenses	$ 2,300	$ 2,300	$ 4,574	$ 4,581