Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash and Short Term Investments (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Jan. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 625,062	$ 646,104
Gross Unrealized Gains	93	53
Gross Unrealized Losses	(3,449)	(4,908)
Fair Value	621,706	641,249
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	315,935	295,402
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	0
Fair Value	315,933	295,402
Cash \| Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	225,794	232,332
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	225,794	232,332
Money market funds \| Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	86,665	60,073
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	86,665	60,073
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	107,285	88,703
Gross Unrealized Gains	0	18
Gross Unrealized Losses	(147)	(112)
Fair Value	107,138	88,609
Commercial paper \| Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,476
Gross Unrealized Gains	0
Gross Unrealized Losses	(2)
Fair Value	3,474
U.S. Agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	72,842	74,158
Gross Unrealized Gains	1	2
Gross Unrealized Losses	(374)	(435)
Fair Value	72,469	73,725
U.S. Agency securities \| Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		2,997
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		2,997
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	122,903	95,805
Gross Unrealized Gains	92	33
Gross Unrealized Losses	(583)	(572)
Fair Value	122,412	95,266
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,995	1,989
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(9)	(19)
Fair Value	1,986	1,970
Foreign government bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,222	2,211
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(30)	(41)
Fair Value	2,192	2,170
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	317,815	383,238
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,306)	(3,729)
Fair Value	$ 315,509	$ 379,509

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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