Intangible Assets

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets consisted of the following as of September 30, 2017 and December 31, 2016 (in thousands):



	September 30, 2017
	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Customer relationships	$	790	$	(510	)	$	280
Technology	4,811		(3,671		)	1,140
Trademarks	930		(508		)	422
Partner relationships	680		(567		)	113
Non-compete agreements	40		(33		)	7
Domain names	273		(273		)	—
Patents	285		(193		)	92
	$	7,809	$	(5,755	)	$	2,054



	December 31, 2016
	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Customer relationships	$	790	$	(392	)	$	398
Technology	4,811		(3,070		)	1,741
Trademarks	930		(416		)	514
Partner relationships	680		(397		)	283
Non-compete agreements	40		(23		)	17
Domain names	273		(241		)	32
Patents	284		(164		)	120
	$	7,808	$	(4,703	)	$	3,105

Amortization expense for the three months ended September 30, 2017 and 2016 was $0.4 million for each period and for the nine months ended September 30, 2017 and 2016 was $1.1 million for each period.

As of September 30, 2017, estimated future amortization of intangible assets was as follows (in thousands):



Years Ending December 31,
2017	$	329
2018	929
2019	352
2020	259
2021	124
Thereafter	61
Total amortization expense	$	2,054