Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Carrying Amounts of Intangible Assets

The carrying amounts of intangible assets as of April 30, 2019 and January 31, 2019 were as follows:

	As of April 30, 2019							As of January 31, 2019
	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		14,955		(8,921	)		6,034		14,448		(7,612	)		6,836
Total acquired intangible assets	$	19,055	$	(8,921	)	$	10,134	$	18,548	$	(7,612	)	$	10,936

Summary of Estimated Future Amortization Expense of Software Licenses

The estimated future amortization expense of these software licenses as of April 30, 2019 is as follows:

	As of
	April 30, 2019
Fiscal Year	(in thousands)
2020 (9 months  remaining)	$	3,813
2021		1,853
2022		368
2023		—
2024		—
Thereafter		—
Total future amortization expenses:	$	6,034