Investments at Fair Value - Summary of Composition of Company's Investment Portfolio at Amortized Cost and Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 663,527	$ 450,797
Fair Value	655,446	452,442
First Lien Debt Investments [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	443,380	307,857
Fair Value	441,766	309,054
Second Lien Debt Investments [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	87,826	87,746
Fair Value	81,330	88,220
Unsecured and Subordinated debt investments [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	75,579	0
Fair Value	75,549	0
Preferred Equity Investments [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	56,742	55,194
Fair Value	$ 56,801	$ 55,168

Cost of the investment.

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+ Details

- Definition

Fair value of investment in security owned.

+ References

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+ Details

- 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.

+ References

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+ Details