Stock-Based Compensation - Summary of Stock Option Activity Under Equity Incentive Plans and Related Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares Subject to Options Outstanding, Beginning balance	6,617,037	8,772,585
Shares Subject to Options Outstanding, Options granted	0	31,666
Shares Subject to Options Outstanding, Options exercised	(886,644)	(1,994,667)
Shares Subject to Options Outstanding, Options forfeited/cancelled	(3,500)	(192,547)
Shares Subject to Options Outstanding, Ending balance	5,726,893	6,617,037	8,772,585
Shares Subject to Options Outstanding, Vested and expected to vest	5,668,611
Shares Subject to Options Outstanding, Exercisable	4,561,255
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-Average Exercise Price, Beginning Balance	$ 10.77	$ 9.48
Weighted-Average Exercise Price, Options granted	4.54	12.48
Weighted-Average Exercise Price, Options exercised		5.14
Weighted-Average Exercise Price, Options forfeited/cancelled	4.63	10.73
Weighted-Average Exercise Price, Ending Balance	11.74	$ 10.77	$ 9.48
Weighted-Average Exercise Price, Vested and expected to vest	11.65
Weighted-Average Exercise Price, Exercisable	$ 9.59
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-Average Remaining Contractual Life (Years)	3 years 14 days	3 years 9 months 7 days	4 years 3 months 7 days
Weighted-Average Remaining Contractual Life (Years), Vested and expected to vest	3 years
Weighted-Average Remaining Contractual Life (Years), Exercisable	2 years 1 month 13 days
Aggregate Intrinsic Value, Balance	$ 82,481	$ 48,098	$ 60,221
Aggregate Intrinsic Value, Vested and expected to vest	82,131
Aggregate Intrinsic Value, Exercisable	$ 75,480