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Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025
--- | --- | ---
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | $ 127,167 | $ 157,522
Total marketable securities | 709,118 | 706,050
Total cash equivalents and marketable securities | 836,285 | 863,572
Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 30,590 | 42,863
Corporate notes and bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 516,918 | 502,444
U.S. government and agency securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 161,610 | 160,743
Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 127,167 | 157,522
Total marketable securities | 709,118 | 706,050
Total cash equivalents and marketable securities | 836,285 | 863,572
Liabilities: |  |
Contingent earn-out consideration liability | 5,752 | 11,493
Total contingent earn-out consideration liability | 5,752 | 11,493
Fair Value, Recurring | Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 30,590 | 42,863
Fair Value, Recurring | Corporate notes and bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 516,918 | 502,444
Fair Value, Recurring | U.S. government and agency securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 161,610 | 160,743
Level 1 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 92,194 | 84,475
Total marketable securities | 158,598 | 157,727
Total cash equivalents and marketable securities | 250,792 | 242,202
Liabilities: |  |
Contingent earn-out consideration liability | 0 | 0
Total contingent earn-out consideration liability | 0 | 0
Level 1 | Fair Value, Recurring | Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 0 | 0
Level 1 | Fair Value, Recurring | Corporate notes and bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 0 | 0
Level 1 | Fair Value, Recurring | U.S. government and agency securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 158,598 | 157,727
Level 2 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 34,973 | 73,047
Total marketable securities | 550,520 | 548,323
Total cash equivalents and marketable securities | 585,493 | 621,370
Liabilities: |  |
Contingent earn-out consideration liability | 0 | 0
Total contingent earn-out consideration liability | 0 | 0
Level 2 | Fair Value, Recurring | Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 30,590 | 42,863
Level 2 | Fair Value, Recurring | Corporate notes and bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 516,918 | 502,444
Level 2 | Fair Value, Recurring | U.S. government and agency securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 3,012 | 3,016
Level 3 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 0 | 0
Total marketable securities | 0 | 0
Total cash equivalents and marketable securities | 0 | 0
Liabilities: |  |
Contingent earn-out consideration liability | 5,752 | 11,493
Total contingent earn-out consideration liability | 5,752 | 11,493
Level 3 | Fair Value, Recurring | Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 0 | 0
Level 3 | Fair Value, Recurring | Corporate notes and bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 0 | 0
Level 3 | Fair Value, Recurring | U.S. government and agency securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total marketable securities | 0 | 0
Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 34,973 | 73,047
Commercial paper | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 34,973 | 73,047
Commercial paper | Level 1 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 0 | 0
Commercial paper | Level 2 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 34,973 | 73,047
Commercial paper | Level 3 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 0 | 0
Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 92,194 | 84,475
Money market funds | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 92,194 | 84,475
Money market funds | Level 1 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 92,194 | 84,475
Money market funds | Level 2 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | 0 | 0
Money market funds | Level 3 | Fair Value, Recurring |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total cash equivalents | $ 0 | $ 0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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