Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Amortization to acquired intangible assets

The gross carrying amounts related to acquired intangible assets as of September 30, 2015 are as follows (in thousands, except year amounts):

	September 30, 2015		Weighted average  amortization  period (years)
Patent Portfolios at December 31, 2014, net	$	55,004		5.62
Amortization expenses		5,594
Impairment loss		35,500
Patent Portfolios at September 30, 2015, net	$	13,910		4.88

The accumulated amortization related to acquired intangible assets for the three and nine months ended September 30, 2015 and 2014 are as follows (in thousands, except year amounts):

	Amortization Expense for the Three  Months Ended September 30,				Amortization Expense for the Nine Months  Ended September 30,
Date Acquired and Description	2015		2014		2015		2014
7/24/13 - Rockstar patent portfolio	$	35	$	118	$	268	$	351
9/10/13 - North South patent portfolio		10		33		74		97
12/31/13 - Rockstar patent portfolio		677		2,325		5,252		6,906
	$	722	$	2,476	$	5,594	$	7,354

Future amortization of all patents

The future amortization of these intangible assets was based on the adjusted carrying amount. Future amortization of all patents is as follows (in thousands):

	Rockstar		North South		Rockstar
	Portfolio		Portfolio		Portfolio
	Acquired		Acquired		Acquired		Total
	24-Jul-13		10-Sep-13		31-Dec-13		Amortization
Three Months Ended December 31, 2015	$	35	$	10	$	678	$	723
Year Ended December 31, 2016		139		39		2,696		2,874
Year Ended December 31, 2017		138		40		2,688		2,866
Year Ended December 31, 2018		138		40		2,689		2,867
Year Ended December 31, 2019		138		40		2,688		2,866
Thereafter		285		88		1,341		1,714
Total	$	873	$	257	$	12,780	$	13,910