Intangible Assets

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Note 6. Intangible Assets

Patent Portfolio and Patent Rights

The Company’s intangible assets with finite lives consist of its patents and patent rights. For all periods presented, all of the Company’s identifiable intangible assets were subject to amortization. The carrying amounts related to acquired intangible assets as March 31, 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		(338	)
Patent Portfolios and Patent Rights at March 31, 2018, net	$	3,240			2.43

The amortization expenses related to acquired intangible assets for the three months ended March 31, 2018 and 2017 are as follows ($ in thousands):

	Amortization Expense for the Three Months Ended March 31,
Date Acquired and Description	2018		2017
7/24/13 - Rockstar patent portfolio	$	18	$	18
9/10/13 - North South patent portfolio		5		5
12/31/13 - Rockstar patent portfolio		315		315
	$	338	$	338

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		54		17		964		1,035
Year Ended December 31, 2019		71		22		1,280		1,373
Year Ended December 31, 2020		71		22		639		732
Year Ended December 31, 2021		71		22		—		93
Thereafter		4		3		—		7
Total	$	271	$	86	$	2,883	$	3,240