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Fair Value and Future Funding Commitments Related to These Investments (Parenthetical) (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Future Funding Commitments | $ 14,214 | $ 14,214
Global Debt Fund, LP |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Proceeds from partial redemption of partnership interest | 8,700 |
European Non-Performing Loan Fund, LP |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Funded commitment amount | 35,800 |
Unfunded Commitments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Future Funding Commitments | 14,200 |
Unfunded Commitments | European Non-Performing Loan Fund, LP |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Future Funding Commitments | $ 14,200 |

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