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Investments, at Fair Value - Alternative Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Mar. 31, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	$ 301,058	$ 293,916
Unfunded Commitments	45,906	47,823
Private Equity
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	137,284	116,462
Unfunded Commitments	37,530	38,401
Venture Capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	131,775	139,495
Unfunded Commitments	1,660	2,548
Natural Resources
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	15,590	17,553
Unfunded Commitments	3,256	3,340
Private Real Estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	7,905	8,760
Unfunded Commitments	2,832	2,907
Hedge Funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	4,135	6,095
Unfunded Commitments	245	245
Other
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	4,369	5,551
Unfunded Commitments	$ 383	$ 382

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- Definition

Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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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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The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

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