Fair Value Measurements - Assets And Liabilities Measured At Fair Value (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Sep. 30, 2023	Mar. 31, 2023
Assets:
Total assets	$ 113,430	$ 129,077
Level 1
Assets:
Total assets	113,430	129,077
Level 2
Assets:
Total assets	0	0
Level 3
Assets:
Total assets	0	0
Money market fund deposits
Assets:
Money market fund deposits	105,012	102,019
Money market fund deposits	8,418	7,129
Investments in marketable securities		19,929
Money market fund deposits \| Level 1
Assets:
Money market fund deposits	105,012	102,019
Money market fund deposits	8,418	7,129
Investments in marketable securities		19,929
Money market fund deposits \| Level 2
Assets:
Money market fund deposits	0	0
Money market fund deposits	0	0
Investments in marketable securities		0
Money market fund deposits \| Level 3
Assets:
Money market fund deposits	0	0
Money market fund deposits	$ 0	0
Investments in marketable securities		$ 0

Restricted Cash and Cash Equivalents, Fair Value Disclosure

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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
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- References

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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

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-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

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