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Investments, at Fair Value - Alternative Investments (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | $ 231,586 | $ 259,113
Unfunded Commitments | 39,155 | 41,644
Private Equity |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 114,895 | 120,008
Unfunded Commitments | 33,047 | 34,252
Venture Capital |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 89,260 | 109,361
Unfunded Commitments | 1,218 | 1,324
Natural Resources |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 12,201 | 12,691
Unfunded Commitments | 2,604 | 2,663
Private Real Estate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 6,978 | 6,454
Unfunded Commitments | 1,910 | 2,777
Hedge Funds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 3,572 | 3,931
Unfunded Commitments | 0 | 245
Other |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 4,680 | 6,668
Unfunded Commitments | $ 376 | $ 383

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