Condensed Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Jan. 31, 2021			131,252,627	43,946,198
Beginning balance at Jan. 31, 2021	$ 107,511		$ 13	$ 4	$ 745,630	$ 1,769	$ (639,905)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock from the exercise of common stock options (in shares)				637,684
Issuance of Class A common stock from the exercise of common stock options	2,156				2,156
Stock-based compensation	3,243				3,243
Change in translation	274					274
Net loss	(29,255)						(29,255)
Ending balance (in shares) at Apr. 30, 2021			131,252,627	44,583,882
Ending balance at Apr. 30, 2021	83,929		$ 13	$ 4	751,029	2,043	(669,160)
Beginning balance (in shares) at Jan. 31, 2021			131,252,627	43,946,198
Beginning balance at Jan. 31, 2021	$ 107,511		$ 13	$ 4	745,630	1,769	(639,905)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Ending balance (in shares) at Jan. 31, 2022				262,175,273
Ending balance at Jan. 31, 2022	$ 648,245	$ (301)		$ 27	1,423,151	2,096	(777,029)	$ (301)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock from the exercise of common stock options (in shares)	2,834,653			3,524,182
Issuance of Class A common stock from the exercise of common stock options	$ 6,203				6,203
Issuance of Class A common stock upon vesting of restricted stock units (in shares)				215,178
Vesting of early exercised stock options (in shares)				91,911
Vesting of early exercised stock options	896				896
Class A common stock withheld to satisfy employee tax withholding obligations (in shares)				(75,442)
Class A common stock withheld to satisfy employee tax withholding obligations	(411)				(411)
Stock-based compensation	20,259				20,259
Change in translation	175					175
Net loss	(44,360)						(44,360)
Ending balance (in shares) at Apr. 30, 2022				265,931,102
Ending balance at Apr. 30, 2022	$ 630,706			$ 27	$ 1,450,098	$ 2,271	$ (821,690)