Stockholders’ Equity and Equity Incentive Plans - Summary of Stock Option Activity Under Equity Incentive Plan (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 31, 2022 USD ($) $ / shares shares	Jan. 31, 2022 USD ($) $ / shares shares
Outstanding Stock Options
Beginning balance (in shares) | shares	6,195,205
Exercised (in shares) | shares	(858,055)
Cancelled/forfeited/expired (in shares) | shares	(83,072)
Ending balance (in shares) | shares	5,254,078	6,195,205
Vested and expected to vest (in shares) | shares	5,254,078
Exercisable (in shares) | shares	4,869,691
Weighted- Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 8.08
Exercised (in dollars per share) | $ / shares	5.90
Cancelled/forfeited/expired (in dollars per share) | $ / shares	21.48
Ending balance (in dollars per share) | $ / shares	8.22	$ 8.08
Weighted average exercise price, vested and expected to vest (in dollars per share) | $ / shares	8.22
Weighted average exercise price, exercisable (in dollars per share) | $ / shares	$ 6.81
Weighted- Average Remaining Contractual Life (Years)
Outstanding (in years)	5 years 6 months	6 years
Vested and expected to vest (in years)	5 years 6 months
Weighted-average remaining contractual life, exercisable (in years)	5 years 4 months 24 days
Aggregate Intrinsic Value
Outstanding | $	$ 502,488	$ 905,744
Exercised | $	91,811
Vested and expected to vest | $	502,488
Options outstanding, aggregate intrinsic value, exercisable | $	$ 472,618