Balance Sheet Components - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Thousands		Apr. 30, 2021	Jan. 31, 2021
Property Plant And Equipment [Line Items]
Acquired intangible assets, net of amortization		$ 19,781
Internally developed software costs, net of amortization	[1],[2]	16,007	$ 16,071
Other assets, noncurrent		5,390	5,247
Deposits, noncurrent		2,481	2,707
Other long-term assets		51,949	32,774
On-premises software
Property Plant And Equipment [Line Items]
Internally developed software costs, net of amortization	[1],[3]	$ 8,290	$ 8,749

[1] The accumulated amortization of capitalized software costs in the aggregate was $14.1 million and $11.2 million as of April 30, 2021 and January 31, 2021, respectively. Amortization expense related to capitalized software was $3.0 million and $1.9 million for the three months ended April 30, 2021 and 2020, respectively. We have not recorded any material impairment charges during the periods presented.

[2] Capitalized stock-based compensation expense, which is included in these amounts, was $5.9 million and $5.8 million as April 30, 2021 and January 31, 2021, respectively.

[3] The estimated useful lives of on-premises software range from three to four years.