Investments - Summary of Geographic Composition of Investments at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Summary Of Investment Holdings [Line Items]
Fair Value	$ 1,610,775	$ 1,582,075
Percentage of Fair Value	100.00%	100.00%
United States
Summary Of Investment Holdings [Line Items]
Fair Value	$ 1,449,832	$ 1,410,306
Percentage of Fair Value	90.10%	89.00%
United Kingdom
Summary Of Investment Holdings [Line Items]
Fair Value	$ 72,914	$ 70,797
Percentage of Fair Value	4.50%	4.50%
Australia
Summary Of Investment Holdings [Line Items]
Fair Value	$ 19,561	$ 20,079
Percentage of Fair Value	1.20%	1.30%
New Zealand
Summary Of Investment Holdings [Line Items]
Fair Value	$ 18,416	$ 19,081
Percentage of Fair Value	1.10%	1.20%
Sweden
Summary Of Investment Holdings [Line Items]
Fair Value	$ 15,431	$ 14,152
Percentage of Fair Value	1.00%	0.90%
Belgium
Summary Of Investment Holdings [Line Items]
Fair Value	$ 13,226	$ 14,759
Percentage of Fair Value	0.80%	0.90%
Netherlands
Summary Of Investment Holdings [Line Items]
Fair Value	$ 10,002	$ 18,340
Percentage of Fair Value	0.60%	1.20%
Canada
Summary Of Investment Holdings [Line Items]
Fair Value	$ 7,243	$ 10,378
Percentage of Fair Value	0.40%	0.70%
France
Summary Of Investment Holdings [Line Items]
Fair Value	$ 4,150	$ 4,183
Percentage of Fair Value	0.30%	0.30%