Goodwill and Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Amortization expenses	$ 722	$ 2,476	$ 5,594	$ 7,354
7/24/13 - Rockstar Patent Portfolio Acquired [Member]
Amortization expenses	35	118	268	351
9/10/13 - North South patent portfolio Acquired [Member]
Amortization expenses	10	33	74	97
12/31/13 - Rockstar Patent Portfolio Acquired [Member]
Amortization expenses	$ 677	$ 2,325	$ 5,252	$ 6,906