Investments at Fair Value (Tables)

12 Months Ended

Dec. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Summary of Investments at Fair Value

Investments at fair value consisted of the following at December 31, 2024 and December 31, 2023:

	December 31, 2024
	Amortized Cost (1)		Fair Value		Net Unrealized Gain (Loss)
First-lien debt investments	$	3,298,006	$	3,302,504	$	4,498
Second-lien debt investments		53,151		19,844		(33,307	)
Mezzanine debt investments		37,087		39,091		2,004
Equity and other investments		149,409		155,501		6,092
Structured credit investments		1,500		1,472		(28	)
Total Investments	$	3,539,153	$	3,518,412	$	(20,741	)

	December 31, 2023
	Amortized Cost (1)		Fair Value		Net Unrealized Gain (Loss)
First-lien debt investments	$	2,956,079	$	2,996,177	$	40,098
Second-lien debt investments		51,423		35,975		(15,448	)
Mezzanine debt investments		38,022		39,471		1,449
Equity and other investments		152,623		155,600		2,977
Structured credit investments		52,865		55,842		2,977
Total Investments	$	3,251,012	$	3,283,065	$	32,053

(1)The amortized cost represents the original cost adjusted for the amortization of discounts or premiums, as applicable, on debt investments using the effective interest method.

Summary of Industry Composition of Investments at Fair Value

The industry composition of investments at fair value at December 31, 2024 and December 31, 2023 is as follows:

	December 31, 2024			December 31, 2023
Automotive		1.2	%		1.3	%
Business Services		13.3	%		18.0	%
Chemicals		0.9	%		0.8	%
Communications		3.5	%		3.3	%
Education		5.0	%		5.3	%
Electronics		0.8	%	—
Financial Services		8.6	%		11.1	%
Healthcare		7.5	%		8.9	%
Hotel, Gaming and Leisure		7.4	%		3.7	%
Human Resource Support Services		10.2	%		11.2	%
Insurance		0.2	%		0.1	%
Internet Services		16.4	%		15.1	%
Manufacturing		3.5	%		2.5	%
Marketing Services		0.3	%		0.3	%
Office Products		0.4	%		0.5	%
Oil, Gas and Consumable Fuels		2.7	%		4.7	%
Other		1.9	%		2.9	%
Pharmaceuticals		2.9	%	—
Real Estate (1)		0.0	%	—
Retail and Consumer Products		9.7	%		8.2	%
Transportation		3.6	%		2.1	%
Total		100.0	%		100.0	%

(1)Value sums to less than 0.1%

Summary of Geographic Composition of Investments at Fair Value

The geographic composition of investments at fair value at December 31, 2024 and December 31, 2023 is as follows:

	December 31, 2024			December 31, 2023
United States
Midwest		14.3	%		10.7	%
Northeast		21.7	%		25.4	%
South		20.6	%		20.7	%
West		28.8	%		32.0	%
Australia		1.1	%		1.8	%
Canada		3.1	%		4.5	%
Finland (1)		0.0	%		0.0	%
France		0.1	%	—
Germany		1.7	%		0.3	%
Italy		0.6	%	—
Luxembourg	—				0.1	%
Netherlands		0.3	%		0.1	%
Norway		2.8	%		1.5	%
Sweden		0.3	%	—
United Kingdom		4.6	%		2.9	%
Total		100.0	%		100.0	%

(1)Value sums to less than 0.1%