Cash Equivalents and Short-Term Investments - Schedule of Unrealized Losses Cash Equivalents and Short Term Investment (Details) - USD ($) $ in Thousands	Jul. 31, 2024	Jan. 31, 2024
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	$ 327,298	$ 277,006
Less than 12 months, gross unrealized losses	(318)	(439)
12 months or greater, carrying value	82,660	68,064
12 months or greater, gross unrealized losses	(204)	(340)
Fair Value	409,958	345,070
Gross Unrealized Losses	(522)	(779)
U.S. Agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	32,661	35,979
Less than 12 months, gross unrealized losses	(38)	(53)
12 months or greater, carrying value	13,729	11,386
12 months or greater, gross unrealized losses	(15)	(83)
Fair Value	46,390	47,365
Gross Unrealized Losses	(53)	(136)
Commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	19,074	15,462
Less than 12 months, gross unrealized losses	(8)	(2)
12 months or greater, carrying value	0	0
12 months or greater, gross unrealized losses	0	0
Fair Value	19,074	15,462
Gross Unrealized Losses	(8)	(2)
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	75,764	85,998
Less than 12 months, gross unrealized losses	(102)	(192)
12 months or greater, carrying value	43,796	15,485
12 months or greater, gross unrealized losses	(147)	(58)
Fair Value	119,560	101,483
Gross Unrealized Losses	(249)	(250)
U.S. Treasury securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	199,799	139,567
Less than 12 months, gross unrealized losses	(170)	(192)
12 months or greater, carrying value	25,135	41,193
12 months or greater, gross unrealized losses	(42)	(199)
Fair Value	224,934	180,760
Gross Unrealized Losses	$ (212)	$ (391)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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