Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Acquired Intangible Assets by Major Asset Class

The following table sets forth our acquired intangible assets by major asset class as of December 31, 2017 and December 31, 2016 (in thousands except for useful life data):

		December 31, 2017												December 31, 2016
	Useful life (years)	Gross		Accumulated amortization			Net book value before impairment		Impairment charge in 2016			Net book value		Gross		Accumulated amortization			Net book value before impairment		Impairment charge			Net book value
Purchased    technology	5-6	$	265	$	(78	)	$	187	$	—		$	187	$	265	$	(32	)	$	233	$	—		$	233
Customer    relationships	3-6		999		(324	)		675		(411	)		264		999		(147	)		852		(411	)		441
Trademarks/trade    names	2		38		(28	)		10		—			10		38		(9	)		29		—			29
Non-compete	3		51		(25	)		26		—			26		51		(9	)		42		—			42
Total		$	1,353	$	(455	)	$	898	$	(411	)	$	487	$	1,353	$	(197	)	$	1,156	$	(411	)	$	745

Future Amortization Expense Related to Intangible Assets

Future amortization expense related to intangible assets as of December 31, 2017 are as follows (in thousands):

Year Ending December 31,
2018		249
2019		143
2020		46
2021		40
2022		9
Beyond		—
Total	$	487