Acquired Intangible Assets, Net

12 Months Ended

Jan. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets, Net

Acquired Intangible Assets, Net

The gross carrying amount and accumulated amortization of the Company’s intangible assets are as follows (in thousands):

	January 31, 2018
	Gross Carrying Value		Accumulated Amortization			Net Book Value
Developed technology	$	4,300	$	(2,723	)	$	1,577
Domain name	155		(105		)	50
Total	$	4,455	$	(2,828	)	$	1,627

	January 31, 2017
	Gross Carrying Value		Accumulated Amortization			Net Book Value
Developed technology	$	4,300	$	(1,863	)	$	2,437
Domain name	155		(81		)	74
Total	$	4,455	$	(1,944	)	$	2,511

Acquired intangible assets are amortized on a straight-line basis. As of January 31, 2018, the weighted-average remaining useful lives of identifiable, acquisition-related intangible assets was 1.8 years for developed technology and 2.2 years for domain name. Amortization expense of intangible assets was $0.9 million for each of the years ended January 31, 2018, 2017 and 2016.

As of January 31, 2018, future amortization expense related to the intangible assets is as follows (in thousands):

Years Ending January 31,
2019	$	883
2020	740
2021	4
Total	$	1,627