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Investments - Schedule of Variable Interest Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Schedule of Equity Method Investments [Line Items]
Fair value investments	$ 18,570
Equity method investments in Partnerships
Schedule of Equity Method Investments [Line Items]
Equity method investments in Partnerships	391,884	$ 340,603
Consolidated VIEs
Schedule of Equity Method Investments [Line Items]
Fair value investments	0	44,752
Total Investments of Consolidated VIEs	15,855	57,044
Consolidated VIEs | Equity method investments in Partnerships
Schedule of Equity Method Investments [Line Items]
Equity method investments in Partnerships	$ 15,855	$ 12,292

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

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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
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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