Net Assets - Schedule of Capital Activity (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Investment Company, Net Assets [Roll Forward]
Balance at beginning of period (in shares)			44,724,135				44,724,135
Balance, beginning of period	$ 488,262		$ 436,290	$ 405,205		$ 420,013	$ 436,290	$ 420,013
Common shares issued	0			60,878			0	60,878
Net investment income (loss)	8,942			10,066			26,626	29,510
Net realized gain (loss)	1,903			14,866			841	(4,224)
Net change in unrealized appreciation (depreciation) on investments	(1,269)			183			(1,280)	(848)
Net change in unrealized currency gain (losses) on non-investment assets and liabilities	(7,088)			(1,324)			47,769	1,939
Distributions declared	$ (9,165)	$ (8,944)	$ (10,552)	(9,349)	$ (9,769)	$ (7,625)	$ (28,661)	(26,743)
Balance at end of period (in shares)	44,724,135						44,724,135
Balance, end of period	$ 481,585	$ 488,262		$ 480,525	$ 405,205		$ 481,585	$ 480,525
Shares
Investment Company, Net Assets [Roll Forward]
Balance at beginning of period (in shares)	44,724,135		44,724,135	38,954,613		38,954,613	44,724,135	38,954,613
Balance, beginning of period	$ 447		$ 447	$ 390		$ 390	$ 447	$ 390
Common Shares issued (in shares)				5,769,522				5,769,522
Common shares issued				$ 57				$ 57
Balance at end of period (in shares)	44,724,135	44,724,135		44,724,135	38,954,613		44,724,135	44,724,135
Balance, end of period	$ 447	$ 447		$ 447	$ 390		$ 447	$ 447
Capital in Excess of Par Value
Investment Company, Net Assets [Roll Forward]
Balance, beginning of period	459,283		459,283	398,535		398,535	459,283	398,535
Common shares issued				60,821				60,821
Balance, end of period	459,283	459,283		459,356	398,535		459,283	459,356
Accumulated Net Investment Income (Loss)
Investment Company, Net Assets [Roll Forward]
Balance, beginning of period	5,366		7,178	8,572		6,522	7,178	6,522
Net investment income (loss)	8,942			10,066			26,626	29,510
Distributions declared	(9,165)			(9,349)			(28,661)	(26,743)
Balance, end of period	5,143	5,366		9,289	8,572		5,143	9,289
Accumulated Net Realized Gain (Loss)
Investment Company, Net Assets [Roll Forward]
Balance, beginning of period	(8,275)		(7,213)	(7,529)		11,561	(7,213)	11,561
Net realized gain (loss)	1,903			14,866			841	(4,224)
Balance, end of period	(6,372)	(8,275)		7,337	(7,529)		(6,372)	7,337
Accumulated Net Unrealized Appreciation (Depreciation)
Investment Company, Net Assets [Roll Forward]
Balance, beginning of period	31,441		$ (23,405)	5,237		$ 3,005	(23,405)	3,005
Net change in unrealized appreciation (depreciation) on investments	(1,269)			183			(1,280)	(848)
Net change in unrealized currency gain (losses) on non-investment assets and liabilities	(7,088)			(1,324)			47,769	1,939
Balance, end of period	$ 23,084	$ 31,441		$ 4,096	$ 5,237		$ 23,084	$ 4,096