CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (in shares) at Jan. 31, 2023		69,906,586
Beginning balance at Jan. 31, 2023	$ 739,508	$ 70	$ 2,276,694	$ (1,319)	$ (905)	$ (1,535,032)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises (in shares)		213,713
Stock option exercises	1,472		1,472
Vesting of restricted stock units (in shares)		388,017
Vesting of restricted stock units	1	$ 1
Vesting of performance stock units (in shares)		22,991
Stock-based compensation	103,955		103,955
Unrealized income (loss) on available-for-sale securities	818				818
Foreign currency translation adjustment	921				921
Net loss	(54,246)					(54,246)
Ending balance (in shares) at Apr. 30, 2023		70,531,307
Ending balance at Apr. 30, 2023	792,429	$ 71	2,382,121	(1,319)	834	(1,589,278)
Beginning balance (in shares) at Jan. 31, 2023		69,906,586
Beginning balance at Jan. 31, 2023	739,508	$ 70	2,276,694	(1,319)	(905)	(1,535,032)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized income (loss) on available-for-sale securities	(7,610)
Foreign currency translation adjustment	(907)
Net loss	(121,140)
Ending balance (in shares) at Oct. 31, 2023		71,959,476
Ending balance at Oct. 31, 2023	967,540	$ 72	2,634,381	(1,319)	(9,422)	(1,656,172)
Beginning balance (in shares) at Apr. 30, 2023		70,531,307
Beginning balance at Apr. 30, 2023	792,429	$ 71	2,382,121	(1,319)	834	(1,589,278)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises (in shares)		265,477
Stock option exercises	2,036	$ 1	2,035
Vesting of restricted stock units (in shares)		432,093
Stock-based compensation	113,312		113,312
Unrealized income (loss) on available-for-sale securities	(5,981)				(5,981)
Foreign currency translation adjustment	1,105				1,105
Net loss	(37,597)					(37,597)
Ending balance (in shares) at Jul. 31, 2023		71,343,385
Ending balance at Jul. 31, 2023	885,085	$ 72	2,517,249	(1,319)	(4,042)	(1,626,875)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under the Employee Stock Purchase Plan (in shares)		114,508
Stock Issued During Period, Value, Employee Stock Purchase Plan	19,781		19,781
Stock option exercises (in shares)		179,901
Stock option exercises	1,303		1,303
Vesting of restricted stock units (in shares)		436,190
Vesting of restricted stock units	0
Stock-based compensation	115,829		115,829
Unrealized income (loss) on available-for-sale securities	(2,447)				(2,447)
Foreign currency translation adjustment	(2,933)				(2,933)
Net loss	(29,297)					(29,297)
Ending balance (in shares) at Oct. 31, 2023		71,959,476
Ending balance at Oct. 31, 2023	$ 967,540	$ 72	2,634,381	(1,319)	(9,422)	(1,656,172)
Beginning balance (in shares) at Jan. 31, 2024	72,741,321	72,741,321
Beginning balance at Jan. 31, 2024	$ 1,068,989	$ 73	2,777,322	(1,319)	4,545	(1,711,632)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises (in shares)		132,617
Stock option exercises	953		953
Vesting of restricted stock units (in shares)		399,213
Vesting of performance stock units (in shares)		77,444
Stock-based compensation	120,763		120,763
Unrealized income (loss) on available-for-sale securities	(9,541)				(9,541)
Foreign currency translation adjustment	(1,007)				(1,007)
Reclassification of derivative related to the Capped Call associated with the 2024 Notes	169,692		169,692
Net loss	(80,593)					(80,593)
Ending balance (in shares) at Apr. 30, 2024		73,350,595
Ending balance at Apr. 30, 2024	$ 1,269,256	$ 73	3,068,730	(1,319)	(6,003)	(1,792,225)
Beginning balance (in shares) at Jan. 31, 2024	72,741,321	72,741,321
Beginning balance at Jan. 31, 2024	$ 1,068,989	$ 73	2,777,322	(1,319)	4,545	(1,711,632)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises (in shares)	215,243
Unrealized income (loss) on available-for-sale securities	$ (818)
Foreign currency translation adjustment	(1,121)
Net loss	$ (144,898)
Ending balance (in shares) at Oct. 31, 2024	74,393,775	74,393,775
Ending balance at Oct. 31, 2024	$ 1,501,976	$ 73	3,357,146	(1,319)	2,606	(1,856,530)
Beginning balance (in shares) at Apr. 30, 2024		73,350,595
Beginning balance at Apr. 30, 2024	1,269,256	$ 73	3,068,730	(1,319)	(6,003)	(1,792,225)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises (in shares)		41,954
Stock option exercises	353		353
Vesting of restricted stock units (in shares)		374,560
Stock-based compensation	122,423		122,423
Unrealized income (loss) on available-for-sale securities	6,989				6,989
Foreign currency translation adjustment	(85)				(85)
Net loss	(54,529)					(54,529)
Ending balance (in shares) at Jul. 31, 2024		73,863,712
Ending balance at Jul. 31, 2024	1,363,047	$ 73	3,210,146	(1,319)	901	(1,846,754)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under the Employee Stock Purchase Plan (in shares)		96,603
Stock Issued During Period, Value, Employee Stock Purchase Plan	18,640		18,640
Stock option exercises (in shares)		40,672
Stock option exercises	315		315
Vesting of restricted stock units (in shares)		385,695
Stock-based compensation	125,712		125,712
Conversion of 2024 convertible senior notes (in shares)		103,696
Conversion of convertible senior notes	20,973		20,973
Unrealized income (loss) on available-for-sale securities	1,734				1,734
Foreign currency translation adjustment	(29)				(29)
Net loss	$ (9,776)					(9,776)
Ending balance (in shares) at Oct. 31, 2024	74,393,775	74,393,775
Ending balance at Oct. 31, 2024	$ 1,501,976	$ 73	$ 3,357,146	$ (1,319)	$ 2,606	$ (1,856,530)