Cash Equivalents and Short-Term Investments - Schedule of Unrealized Losses Cash Equivalents and Short Term Investment (Details) - USD ($) $ in Thousands	Oct. 31, 2025	Jan. 31, 2025
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	$ 228,208	$ 234,818
Less than 12 months, gross unrealized losses	(148)	(362)
12 months or greater, carrying value	17,493	5,988
12 months or greater, gross unrealized losses	(6)	(2)
Fair Value	245,701	240,806
Gross Unrealized Losses	(154)	(364)
U.S. Agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	13,935	48,445
Less than 12 months, gross unrealized losses	(8)	(65)
12 months or greater, carrying value	2,005	0
12 months or greater, gross unrealized losses	(1)	0
Fair Value	15,940	48,445
Gross Unrealized Losses	(9)	(65)
Commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	6,624	13,430
Less than 12 months, gross unrealized losses	(2)	(11)
12 months or greater, carrying value	0	0
12 months or greater, gross unrealized losses	0	0
Fair Value	6,624	13,430
Gross Unrealized Losses	(2)	(11)
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	61,141	72,022
Less than 12 months, gross unrealized losses	(48)	(146)
12 months or greater, carrying value	3,488	5,988
12 months or greater, gross unrealized losses	(2)	(2)
Fair Value	64,629	78,010
Gross Unrealized Losses	(50)	(148)
U.S. Treasury securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	146,508	100,921
Less than 12 months, gross unrealized losses	(90)	(140)
12 months or greater, carrying value	12,000	0
12 months or greater, gross unrealized losses	(3)	0
Fair Value	158,508	100,921
Gross Unrealized Losses	$ (93)	$ (140)

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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