Goodwill and Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Goodwill Activity

Goodwill activity is reflected in the following table (in thousands):

Balance as of January 31, 2014	$	8,081
Goodwill acquired		3,161
Balance as of January 31, 2015		11,242
Goodwill acquired—Verold		2,644
Goodwill acquired—Other		415
Balance as of January 31, 2016	$	14,301

Schedule of Components of Intangible Assets

Intangible assets consisted of the following (in thousands):

	Weighted Average Useful Life (1)			Gross Value		Accumulated Amortization			Net Carrying Value
January 31, 2016
Developed technology		2.5	years	$	14,273	$	(10,711	)	$	3,562
Trade name and other		6.9	years		1,201		(868	)		333
Intangibles, net				$	15,474	$	(11,579	)	$	3,895
January 31, 2015
Developed technology		2.7	years	$	11,124	$	(5,268	)	$	5,856
Trade name and other		6.9	years		1,201		(714	)		487
Intangibles, net				$	12,325	$	(5,982	)	$	6,343

(1) From the date of acquisition

Schedule of Expected Amortization Expense of Intangible Assets

As of January 31, 2016, expected amortization expense for intangible assets for each of the next five years and thereafter was as follows (in thousands):

Years ending January 31:
2017	$	3,352
2018		519
2019		23
2020		1
2021 and thereafter		—
	$	3,895