Condensed Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Common stock, shares outstanding, beginning balance (in shares) at Jan. 31, 2022		334,760,615
Beginning balance at Jan. 31, 2022	$ 547,014	$ 33	$ 1,366,855	$ (8,219)	$ (811,655)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock plans, net of tax withholding (in shares)		1,631,104
Issuance of common stock under stock plans, net of tax withholding	773	$ 1	772
Issuance of common stock upon ESPP purchase (in shares)		263,962
Issuance of common stock upon ESPP purchase	3,920		3,920
Issuance of common stock upon exercise of warrants (in shares)		16,948
Issuance of common stock upon exercise of warrants	48		48
Vesting of early exercised stock options	17		17
Stock-based compensation	15,527		15,527
Net loss	(89,266)				(89,266)
Other comprehensive income (loss)	(12,941)			(12,941)
Common stock, shares outstanding, ending balance (in shares) at Apr. 30, 2022		336,672,629
Ending balance at Apr. 30, 2022	465,092	$ 34	1,387,139	(21,160)	(900,921)
Common stock, shares outstanding, beginning balance (in shares) at Jan. 31, 2022		334,760,615
Beginning balance at Jan. 31, 2022	547,014	$ 33	1,366,855	(8,219)	(811,655)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(266,446)
Other comprehensive income (loss)	(26,835)
Common stock, shares outstanding, ending balance (in shares) at Oct. 31, 2022		341,531,034
Ending balance at Oct. 31, 2022	338,590	$ 34	1,451,711	(35,054)	(1,078,101)
Common stock, shares outstanding, beginning balance (in shares) at Apr. 30, 2022		336,672,629
Beginning balance at Apr. 30, 2022	465,092	$ 34	1,387,139	(21,160)	(900,921)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon release of restricted stock units (in shares)		2,147,834
Issuance of common stock upon release of restricted stock units	728		728
Vesting of early exercised stock options	15		15
Stock-based compensation	26,419		26,419
Net loss	(92,700)				(92,700)
Other comprehensive income (loss)	(7,865)			(7,865)
Common stock, shares outstanding, ending balance (in shares) at Jul. 31, 2022		338,820,463
Ending balance at Jul. 31, 2022	391,689	$ 34	1,414,301	(29,025)	(993,621)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock plans, net of tax withholding (in shares)		1,435,049
Issuance of common stock under stock plans, net of tax withholding	314		314
Issuance of common stock upon ESPP purchase (in shares)		343,422
Issuance of common stock upon ESPP purchase	5,027		5,027
Issuance of common stock upon exercise of warrants (in shares)		936,764
Issuance of common stock upon exercise of warrants	6,354		6,354
Vesting of early exercised stock options	17		17
Repurchase of unvested restricted shares (in shares)		(4,664)
Stock-based compensation	25,698		25,698
Net loss	(84,480)				(84,480)
Other comprehensive income (loss)	(6,029)			(6,029)
Common stock, shares outstanding, ending balance (in shares) at Oct. 31, 2022		341,531,034
Ending balance at Oct. 31, 2022	$ 338,590	$ 34	1,451,711	(35,054)	(1,078,101)
Common stock, shares outstanding, beginning balance (in shares) at Jan. 31, 2023	348,330,481	348,330,481
Beginning balance at Jan. 31, 2023	$ 354,992	$ 35	1,528,104	(16,384)	(1,156,763)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock plans, net of tax withholding (in shares)		2,278,764
Issuance of common stock under stock plans, net of tax withholding	915		915
Issuance of common stock upon ESPP purchase (in shares)		562,829
Issuance of common stock upon ESPP purchase	4,875		4,875
Issuance of common stock in connection with ATM offerings, net of issuance costs (in shares)		1,909,028
Issuance of common stock in connection with ATM offerings, net of issuance costs	17,516		17,516
Vesting of early exercised stock options	14		14
Stock-based compensation	23,964		23,964
Net loss	(79,388)				(79,388)
Other comprehensive income (loss)	4,591			4,591
Common stock, shares outstanding, ending balance (in shares) at Apr. 30, 2023		353,081,102
Ending balance at Apr. 30, 2023	$ 327,479	$ 35	1,575,388	(11,793)	(1,236,151)
Common stock, shares outstanding, beginning balance (in shares) at Jan. 31, 2023	348,330,481	348,330,481
Beginning balance at Jan. 31, 2023	$ 354,992	$ 35	1,528,104	(16,384)	(1,156,763)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(362,861)
Other comprehensive income (loss)	$ (2,921)
Common stock, shares outstanding, ending balance (in shares) at Oct. 31, 2023	417,939,824	417,939,824
Ending balance at Oct. 31, 2023	$ 392,562	$ 42	1,931,450	(19,305)	(1,519,625)
Common stock, shares outstanding, beginning balance (in shares) at Apr. 30, 2023		353,081,102
Beginning balance at Apr. 30, 2023	327,479	$ 35	1,575,388	(11,793)	(1,236,151)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock plans, net of tax withholding (in shares)		2,635,078
Issuance of common stock under stock plans, net of tax withholding	420		420
Issuance of common stock in connection with ATM offerings, net of issuance costs (in shares)		4,076,072
Issuance of common stock in connection with ATM offerings, net of issuance costs	37,284	$ 1	37,283
Vesting of early exercised stock options	8		8
Stock-based compensation	35,099		35,099
Net loss	(125,255)				(125,255)
Other comprehensive income (loss)	185			185
Common stock, shares outstanding, ending balance (in shares) at Jul. 31, 2023		359,792,252
Ending balance at Jul. 31, 2023	275,220	$ 36	1,648,198	(11,608)	(1,361,406)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under stock plans, net of tax withholding (in shares)		4,130,978
Issuance of common stock under stock plans, net of tax withholding	1,330		1,330
Issuance of common stock upon ESPP purchase (in shares)		702,480
Issuance of common stock upon ESPP purchase	3,415		3,415
Issuance of common stock in connection with ATM offerings, net of issuance costs (in shares)		53,314,381
Issuance of common stock in connection with ATM offerings, net of issuance costs	232,399	$ 6	232,393
Vesting of early exercised stock options	6		6
Repurchase of unvested restricted shares (in shares)		(267)
Impact of convertible note modification	13,225		13,225
Stock-based compensation	32,883		32,883
Net loss	(158,219)				(158,219)
Other comprehensive income (loss)	$ (7,697)			(7,697)
Common stock, shares outstanding, ending balance (in shares) at Oct. 31, 2023	417,939,824	417,939,824
Ending balance at Oct. 31, 2023	$ 392,562	$ 42	$ 1,931,450	$ (19,305)	$ (1,519,625)