Investments at Fair Value - Summary of Industry Composition of Investments at Amortized Cost and Fair Value (Detail) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 722,356,000	$ 450,797,000
Investments at fair value	$ 707,239,000	$ 452,442,000
Percentage of investments at fair value	100.00%	100.00%
Aerospace and Defense [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 22,327,000	$ 21,038,000
Investments at fair value	$ 22,428,000	$ 21,190,000
Percentage of investments at fair value	3.20%	4.70%
Construction and Engineering [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 31,559,000	$ 29,766,000
Investments at fair value	$ 32,095,000	$ 29,867,000
Percentage of investments at fair value	4.50%	6.60%
Distributors [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 39,486,000	$ 39,437,000
Investments at fair value	$ 39,320,000	$ 39,520,000
Percentage of investments at fair value	5.60%	8.70%
Diversified Consumer Services [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 113,585,000	$ 43,813,000
Investments at fair value	$ 113,487,000	$ 43,793,000
Percentage of investments at fair value	16.00%	9.70%
Health Care Providers and Services [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 152,799,000	$ 89,033,000
Investments at fair value	$ 150,521,000	$ 89,426,000
Percentage of investments at fair value	21.30%	19.80%
Health Care Technology [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 20,398,000	$ 20,389,000
Investments at fair value	$ 20,223,000	$ 20,518,000
Percentage of investments at fair value	2.90%	4.50%
Insurance Sector [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 86,908,000	$ 46,427,000
Investments at fair value	$ 86,384,000	$ 46,478,000
Percentage of investments at fair value	12.20%	10.30%
Professional Services [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 88,033,000	$ 25,834,000
Investments at fair value	$ 87,791,000	$ 26,340,000
Percentage of investments at fair value	12.40%	5.80%
Software [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 135,630,000	$ 135,060,000
Investments at fair value	$ 123,494,000	$ 135,310,000
Percentage of investments at fair value	17.50%	29.90%
Trading Companies and Distributors [Member]
Debt Securities, Available-for-Sale [Line Items]
Investments at amortized cost	$ 31,631,000	$ 0
Investments at fair value	$ 31,496,000	$ 0
Percentage of investments at fair value	4.40%	0.00%