Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Carrying Amounts of Intangible Assets

The carrying amounts of intangible assets as of January 31, 2019 and 2018 were as follows:

	As of January 31, 2019							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 license		14,448		(7,612	)		6,836		13,404		(3,087	)		10,317
Total acquired intangible assets	$	18,548	$	(7,612	)	$	10,936	$	17,504	$	(3,087	)	$	14,417

Summary of Expected Annual Amortization Expense Related to Software Licenses

The expected annual amortization expense related to these software licenses as of January 31, 2019 is as follows:

	As of
	January 31, 2019
Fiscal Year	(in thousands)
2020	$	4,906
2021		1,669
2022		261
2023		—
2024		—
Thereafter		—
Total future amortization expenses:	$	6,836