Condensed Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (shares) at Jan. 31, 2022				3,263,659	29,729,822
Beginning balance at Jan. 31, 2022	$ (125,978)			$ 3	$ 30	$ 1,098,084	$ 388	$ (1,224,483)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					527,423
Issuance of common stock under employee stock purchase plan (shares)					164,959
Issuance of common stock under employee stock purchase plan	1,563					1,563
Exercise of stock options (shares)					37,727
Exercise of stock options	724					724
Stock-based compensation expense	25,328					25,328
Other comprehensive income (loss)	(703)						(703)
Net loss	(32,888)							(32,888)
Ending balance (shares) at Apr. 30, 2022				3,263,659	30,459,931
Ending balance at Apr. 30, 2022	(131,954)			$ 3	$ 30	1,125,699	(315)	(1,257,371)
Beginning balance (shares) at Jan. 31, 2022				3,263,659	29,729,822
Beginning balance at Jan. 31, 2022	(125,978)			$ 3	$ 30	1,098,084	388	(1,224,483)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Net loss	(85,738)	$ (8,257)	$ (77,481)
Ending balance (shares) at Oct. 31, 2022				3,263,659	31,281,307
Ending balance at Oct. 31, 2022	(146,125)			$ 3	$ 31	1,165,522	(1,460)	(1,310,221)
Beginning balance (shares) at Apr. 30, 2022				3,263,659	30,459,931
Beginning balance at Apr. 30, 2022	(131,954)			$ 3	$ 30	1,125,699	(315)	(1,257,371)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					533,234
Vesting of restricted stock units	1				$ 1
Exercise of stock options (shares)					4,605
Exercise of stock options	81					81
Stock-based compensation expense	20,451					20,451
Other comprehensive income (loss)	(386)						(386)
Net loss	(29,139)							(29,139)
Ending balance (shares) at Jul. 31, 2022				3,263,659	30,997,770
Ending balance at Jul. 31, 2022	(140,946)			$ 3	$ 31	1,146,231	(701)	(1,286,510)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					278,480
Exercise of stock options (shares)					5,057
Exercise of stock options	56					56
Stock-based compensation expense	19,235					19,235
Other comprehensive income (loss)	(759)						(759)
Net loss	(23,711)	$ (2,250)	$ (21,461)					(23,711)
Ending balance (shares) at Oct. 31, 2022				3,263,659	31,281,307
Ending balance at Oct. 31, 2022	(146,125)			$ 3	$ 31	1,165,522	(1,460)	(1,310,221)
Beginning balance (shares) at Jan. 31, 2023		3,263,659	31,572,826	3,263,659	31,572,826
Beginning balance at Jan. 31, 2023	(146,400)			$ 3	$ 32	1,183,921	(322)	(1,330,034)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					704,314
Issuance of common stock under employee stock purchase plan (shares)					169,801
Issuance of common stock under employee stock purchase plan	2,032					2,032
Stock-based compensation expense	17,422					17,422
Other comprehensive income (loss)	180						180
Net loss	(24,403)							(24,403)
Ending balance (shares) at Apr. 30, 2023				3,263,659	32,446,941
Ending balance at Apr. 30, 2023	(151,169)			$ 3	$ 32	1,203,375	(142)	(1,354,437)
Beginning balance (shares) at Jan. 31, 2023		3,263,659	31,572,826	3,263,659	31,572,826
Beginning balance at Jan. 31, 2023	$ (146,400)			$ 3	$ 32	1,183,921	(322)	(1,330,034)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Exercise of stock options (shares)	7,638
Net loss	$ (56,884)	$ (5,185)	$ (51,699)
Ending balance (shares) at Oct. 31, 2023		3,263,659	33,353,976	3,263,659	33,353,976
Ending balance at Oct. 31, 2023	(150,771)			$ 3	$ 33	1,236,895	(784)	(1,386,918)
Beginning balance (shares) at Apr. 30, 2023				3,263,659	32,446,941
Beginning balance at Apr. 30, 2023	(151,169)			$ 3	$ 32	1,203,375	(142)	(1,354,437)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					371,892
Vesting of restricted stock units	1				$ 1
Exercise of stock options (shares)					316
Exercise of stock options	3					3
Stock-based compensation expense	15,226					15,226
Other comprehensive income (loss)	166						166
Net loss	(16,068)							(16,068)
Ending balance (shares) at Jul. 31, 2023				3,263,659	32,819,149
Ending balance at Jul. 31, 2023	(151,841)			$ 3	$ 33	1,218,604	24	(1,370,505)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					365,003
Issuance of common stock under employee stock purchase plan (shares)					162,502
Issuance of common stock under employee stock purchase plan	1,374					1,374
Exercise of stock options (shares)					7,322
Exercise of stock options	62					62
Stock-based compensation expense	16,855					16,855
Other comprehensive income (loss)	(808)						(808)
Net loss	(16,413)	$ (1,475)	$ (14,938)					(16,413)
Ending balance (shares) at Oct. 31, 2023		3,263,659	33,353,976	3,263,659	33,353,976
Ending balance at Oct. 31, 2023	$ (150,771)			$ 3	$ 33	$ 1,236,895	$ (784)	$ (1,386,918)