Cash Equivalents and Marketable Securities - Summary of Fair Values and Unrealized Losses of Available-For-Sale Marketable Securities In Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Apr. 30, 2023
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
AFS, Less Than 12 Months, Unrealized Losses	$ (590)	$ (556)
AFS, Less Than 12 Months, Fair Value	237,352	145,241
AFS, 12 Months or Greater, Unrealized Losses	(40)	(57)
AFS, 12 Months or Greater, Fair Value	35,407	33,435
AFS, Total Unrealized Losses	(630)	(612)
AFS, Total Fair Value	272,759	178,676
U.S. treasury securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
AFS, Less Than 12 Months, Unrealized Losses	0	(49)
AFS, Less Than 12 Months, Fair Value	2,497	18,927
AFS, 12 Months or Greater, Unrealized Losses	0	0
AFS, 12 Months or Greater, Fair Value	0	0
AFS, Total Unrealized Losses	0	(49)
AFS, Total Fair Value	2,497	18,927
U.S. government agencies securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
AFS, Less Than 12 Months, Unrealized Losses	(99)	(66)
AFS, Less Than 12 Months, Fair Value	33,890	12,263
AFS, 12 Months or Greater, Unrealized Losses	(6)	(21)
AFS, 12 Months or Greater, Fair Value	7,749	16,858
AFS, Total Unrealized Losses	(105)	(87)
AFS, Total Fair Value	41,639	29,121
Commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
AFS, Less Than 12 Months, Unrealized Losses	0	0
AFS, Less Than 12 Months, Fair Value	4,058	6,735
AFS, 12 Months or Greater, Unrealized Losses	0	0
AFS, 12 Months or Greater, Fair Value	0	0
AFS, Total Unrealized Losses	0	0
AFS, Total Fair Value	4,058	6,735
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
AFS, Less Than 12 Months, Unrealized Losses	(491)	(441)
AFS, Less Than 12 Months, Fair Value	196,907	107,316
AFS, 12 Months or Greater, Unrealized Losses	(34)	(36)
AFS, 12 Months or Greater, Fair Value	27,658	16,577
AFS, Total Unrealized Losses	(525)	(476)
AFS, Total Fair Value	$ 224,565	$ 123,893