Balance Sheet Components - Other Assets, Noncurrent (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable, noncurrent	$ 28,008	$ 9,011
Equity investment	13,538	3,000
Prepaid expense, noncurrent	12,386	2,945
Indefinite-lived intangible assets	8,002	2,159
Convertible note	5,130	0
Intangible assets subject to amortization, net	2,814	0
Other	6,075	5,217
Other assets, noncurrent	$ 75,953	$ 22,332