Intangible Assets (Tables)

9 Months Ended

Oct. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Carrying Amounts of Intangible Assets

The carrying amounts of intangible assets as of October 31, 2018 and January 31, 2018 were as follows:

	As of October 31, 2018							As of January 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(in thousands)
In-process research and development	$	4,100	$	—		$	4,100	$	4,100	$	—		$	4,100
Internal-use software licenses		13,663		(6,541	)		7,122		13,404		(3,087	)		10,317
Total acquired intangible assets	$	17,763	$	(6,541	)	$	11,222	$	17,504	$	(3,087	)	$	14,417

Summary of Estimated Future Amortization Expense of Software Licenses

The estimated future amortization expense of these software licenses as of October 31, 2018 is as follows:

	As of
	October 31, 2018
Fiscal Year	(in thousands)
2019	$	1,151
2020		4,599
2021		1,372
2022		—
2023		—
Thereafter		—
Total future amortization expenses:	$	7,122