Investments - Schedule of Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Sep. 30, 2023	Mar. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Cumulative gross unrealized gains	$ 70,235	$ 69,058
Cumulative gross unrealized losses	$ (43,289)	$ (43,289)

Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479536/321-10-50-4

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration