Annual report pursuant to Section 13 and 15(d)

Investments - Schedule of Fair Value Portfolio of Investments by Asset Class (Details)

v3.24.0.1
Investments - Schedule of Fair Value Portfolio of Investments by Asset Class (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 3,248,046 $ 2,963,955
Investment Type Concentration Risk | Total Investments Benchmark    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 3,248,046 $ 2,963,955
Percentage of Total Portfolio 100.00% 100.00%
Investment Type Concentration Risk | Total Investments Benchmark | Senior Secured Debt    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 2,987,577 $ 2,741,388
Percentage of Total Portfolio 92.00% 92.50%
Investment Type Concentration Risk | Total Investments Benchmark | Unsecured Debt    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 69,722 $ 54,056
Percentage of Total Portfolio 2.20% 1.80%
Investment Type Concentration Risk | Total Investments Benchmark | Preferred Stock    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 53,038 $ 41,488
Percentage of Total Portfolio 1.60% 1.40%
Investment Type Concentration Risk | Total Investments Benchmark | Common Stock    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 99,132 $ 92,484
Percentage of Total Portfolio 3.10% 3.10%
Investment Type Concentration Risk | Total Investments Benchmark | Warrants    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 33,969 $ 30,646
Percentage of Total Portfolio 1.00% 1.10%
Investment Type Concentration Risk | Total Investments Benchmark | Investment Funds & Vehicles    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 4,608 $ 3,893
Percentage of Total Portfolio 0.10% 0.10%