Fair Value of Financial Instruments - Fair Value Measurements of Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investment	$ 154,793	$ 172,582
Structured credit investments	87,769	97,872
Joint Venture Investments	53,832
Total investments at fair value	3,302,132	3,347,317
Interest rate swaps	(3,805)	10,301
Total	3,298,327	3,357,618
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investment	12,099	28,169
Total investments at fair value	12,099	28,169
Total	12,099	28,169
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investment	10,737	11,016
Structured credit investments	87,769	97,872
Total investments at fair value	114,317	137,314
Interest rate swaps	(3,805)	10,301
Total	110,512	147,615
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity investment	131,957	133,397
Joint Venture Investments	53,832
Total investments at fair value	3,175,716	3,181,834
Total	3,175,716	3,181,834
First-lien Debt Investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	2,917,433	2,984,501
First-lien Debt Investments \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	15,801	28,204
First-lien Debt Investments \| Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	2,901,632	2,956,297
Second-lien Debt Investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	23,685	30,678
Second-lien Debt Investments \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	10	222
Second-lien Debt Investments \| Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	23,675	30,456
Mezzanine Debt Investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	64,620	61,684
Mezzanine Debt Investments \| Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt investments	$ 64,620	$ 61,684