Intangible Assets

9 Months Ended

Sep. 30, 2016

(2)	Intangible Assets

Intangible assets consist of the following (in thousands):

	September 30, 2016				December 31, 2015
	Gross carrying value		Accumulated amortization		Gross carrying value		Accumulated Amortization
Amortizable intangible assets Licensed technology	$	9,608	$	1,021	$	7,156	$	547

Amortization expense related to intangible assets totaled $183,000 and $474,000 for the three and nine months ended September 30, 2016, respectively, and totaled $145,000 and $392,000 for the three and nine months ended September 30, 2015, respectively. The aggregate estimated amortization expense for intangible assets remaining as of September 30, 2016 is as follows (in thousands):

2016	$	203
2017		812
2018		812
2019		812
2020		812
over 5 years		5,136
Total	$	8,587