CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	RSUs	Common Stock	Common Stock RSUs	Additional Paid-In Capital	Additional Paid-In Capital RSUs	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning Balance, shares (in shares) at Apr. 30, 2022			106,225
Beginning Balance, Amount at Apr. 30, 2022	$ 989,477		$ 106		$ 1,532,917		$ (2,148)	$ (541,398)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of stock options, net of repurchases (in shares)			278
Issuance of Class A common stock upon exercise of stock options, net of repurchases	1,101				1,101
Vesting of early exercised Class A common stock options	333				333
Vesting of restricted stock units (in shares)				1,841
Vesting of restricted stock units		$ 13,671		$ 2		$ 13,669
Stock-based compensation expense	46,467				46,467
Other comprehensive loss	(200)						(200)
Net loss	(71,871)							(71,871)
Ending Balance, shares (in shares) at Jul. 31, 2022			108,344
Ending Balance, Amount at Jul. 31, 2022	978,978		$ 108		1,594,487		(2,348)	(613,269)
Beginning Balance, shares (in shares) at Apr. 30, 2023			113,943
Beginning Balance, Amount at Apr. 30, 2023	$ 929,665		$ 113		1,740,174		(385)	(810,237)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of stock options, net of repurchases (in shares)	2,086		2,084
Issuance of Class A common stock upon exercise of stock options, net of repurchases	$ 9,571		$ 2		9,569
Vesting of early exercised Class A common stock options	151				151
Shares withheld related to net share settlement of equity awards (in shares)			(172)
Shares withheld related to net share settlement of equity awards	(7,118)				(7,118)
Vesting of restricted stock units (in shares)				2,070
Vesting of restricted stock units		$ 21,468		$ 2		$ 21,466
Stock-based compensation expense	43,436				43,436
Other comprehensive loss	(373)						(373)
Net loss	(64,358)							(64,358)
Ending Balance, shares (in shares) at Jul. 31, 2023			117,925
Ending Balance, Amount at Jul. 31, 2023	$ 932,442		$ 117		$ 1,807,678		$ (758)	$ (874,595)