Stockholders’ Equity and Equity Incentive Plans - Summary of Stock Option Activity Under Equity Incentive Plan (Details) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 31, 2021 USD ($) $ / shares shares	Jan. 31, 2021 USD ($) $ / shares shares
Outstanding Stock Options
Beginning balance (in shares) | shares	9,239,504
Granted (in shares) | shares	0
Exercised (in shares) | shares	(2,205,249)
Cancelled/forfeited/expired (in shares) | shares	(128,780)
Ending balance (in shares) | shares	6,905,475	9,239,504
Outstanding stock options, vested and exercisable (in shares) | shares	4,978,217
Weighted- Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 7.17
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	5.01
Cancelled/forfeited/expired (in dollars per share) | $ / shares	9.32
Ending balance (in dollars per share) | $ / shares	7.83	$ 7.17
Weighted average exercise price, vested and exercisable (in dollars per share) | $ / shares	$ 5.16
Weighted- Average Remaining Contractual Life (Years)
Weighted- Average Remaining Contractual Life (Years)	6 years 3 months 18 days	7 years
Weighted-average remaining contractual life (years), vested and exercisable	6 years
Aggregate Intrinsic Value
Options outstanding, aggregate intrinsic value | $	$ 1,842,547	$ 3,371,457
Options outstanding, aggregate intrinsic value, vested and exercisable | $	$ 1,341,584