Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

The carrying amounts related to acquired intangible assets as September 30, 2018 are as follows ($ in thousands):  

	Net Carrying Amount			Weighted average amortization period (years)
Patent Portfolios and Patent Rights at December 31, 2017, net	$	3,578			2.67
Amortization expenses		(1,027	)
Impairment loss		(1,051	)
Patent Portfolios and Patent Rights at September 30, 2018, net	$	1,500			1.00

Schedule of amortization to acquired intangible assets

The amortization expenses related to acquired intangible assets for the nine months ended September 30, 2018 and 2017 are as follows ($ in thousands): 

	Amortization Expense for the Three Months Ended September 30,				Amortization Expense for the Nine Months Ended September 30,
Date Acquired and Description	2018		2017		2018		2017
7/24/13 - Rockstar patent portfolio	$	18	$	18	$	54	$	53
9/10/13 - North South patent portfolio		5		5		16		16
12/31/13 - Rockstar patent portfolio		323		323		957		958
	$	346	$	346	$	1,027	$	1,027

Schedule of future amortization of intangible assets

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
Nine Months Ended December 31, 2018		42		15		321		378
Year Ended December 31, 2019		129		42		951		1,122
Total	$	171	$	57	$	1,272	$	1,500