Intangible Assets

9 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

15. Intangible Assets

The following table sets forth our acquired intangible assets by major asset class as of September 30, 2016 and December 31, 2015 (in thousands except for useful life data):

			September 30, 2016							December 31, 2015
	Useful life (years)		Gross		Accumulated amortization			Net book value		Gross		Accumulated amortization		Net book value
Purchased technology		5 - 6	$	265	$	(20	)	$	245	$	—	$	—	$	—
Customer relationships		3 - 6		999		(83	)		916		—		—		—
Trademarks/trade names		2		38		(5	)		33		—		—		—
Non-compete		3		51		(4	)		47		—		—		—
Total			$	1,353	$	(112	)	$	1,241	$	—	$	—	$	—

Intangible assets amortization expense was $0.1 million for the three and nine months ended September 30, 2016, respectively, and $0 for the three and nine months ended September 30, 2015, respectively.

Future amortization expense related to intangible assets as of September 30, 2016 are as follows (in thousands):

Year Ending December 31,
2016-3 months remaining	$	84
2017		337
2018		328
2019		221
2020		125
Beyond		146
Total	$	1,241