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Investments and Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Assets, Fair Value Disclosure [Abstract]
Investments:	$ 104,139
Total financial assets	626,953	$ 338,746
Mutual funds
Assets, Fair Value Disclosure [Abstract]
Investments:	102
U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Investments:	104,139
Money market funds
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	477,102	338,746
U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	45,610
U.S. treasury securities | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Investments:	149,749
Level 1
Assets, Fair Value Disclosure [Abstract]
Total financial assets	477,204	338,746
Level 1 | Mutual funds
Assets, Fair Value Disclosure [Abstract]
Investments:	102
Level 1 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Investments:	0
Level 1 | Money market funds
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	477,102	338,746
Level 1 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	0
Level 2
Assets, Fair Value Disclosure [Abstract]
Total financial assets	149,749	0
Level 2 | Mutual funds
Assets, Fair Value Disclosure [Abstract]
Investments:	0
Level 2 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Investments:	104,139
Level 2 | Money market funds
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	0	0
Level 2 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	45,610
Level 3
Assets, Fair Value Disclosure [Abstract]
Total financial assets	0	0
Level 3 | Mutual funds
Assets, Fair Value Disclosure [Abstract]
Investments:	0
Level 3 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Investments:	0
Level 3 | Money market funds
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	0	$ 0
Level 3 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Cash equivalents:	$ 0

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
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- Definition

Amount 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/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481830/320-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-1

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