v3.26.1
FAIR VALUE MEASUREMENTS - Schedule of Valuation Techniques and Significant Unobservable Inputs Used in Level 3 Fair Value Measurements of Assets (Details) - Level 3
$ in Thousands
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 1,842,674 $ 1,898,798
First-Lien Debt | Yield Method | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 1,628,254 $ 1,679,774
First-Lien Debt | Yield Method | Low | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.0769 0.0745
First-Lien Debt | Yield Method | High | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.2450 0.1814
First-Lien Debt | Yield Method | Weighted Average | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.0996 0.0924
First-Lien Debt | Market Approach | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 34,498 $ 28,547
First-Lien Debt | Market Approach | Revenue Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 7,376 $ 6,483
First-Lien Debt | Market Approach | Low | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 4.5 6
First-Lien Debt | Market Approach | Low | Revenue Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.3 0.33
First-Lien Debt | Market Approach | High | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 11.5 10.93
First-Lien Debt | Market Approach | High | Revenue Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.65 1.5
First-Lien Debt | Market Approach | Weighted Average | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 7.73 7.93
First-Lien Debt | Market Approach | Weighted Average | Revenue Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.5 0.81
First-Lien Debt | Recent Transactions    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments valued using recent transactions $ 38,954 $ 33,701
Subordinated Debt | Yield Method | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value 118,101 $ 139,506
Subordinated Debt | Yield Method | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 4,113  
Subordinated Debt | Yield Method | Low | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.1037 0.1060
Subordinated Debt | Yield Method | Low | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.2250  
Subordinated Debt | Yield Method | High | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.2057 0.2250
Subordinated Debt | Yield Method | High | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.2250  
Subordinated Debt | Yield Method | Weighted Average | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.1487 0.1508
Subordinated Debt | Yield Method | Weighted Average | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.2250  
Subordinated Debt | Market Approach | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 7,775 $ 10,357
Subordinated Debt | Market Approach | Low | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 10 10.4
Subordinated Debt | Market Approach | Low | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 10.35  
Subordinated Debt | Market Approach | High | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 10 10.4
Subordinated Debt | Market Approach | High | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 10.35  
Subordinated Debt | Market Approach | Weighted Average | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 10 10.4
Subordinated Debt | Market Approach | Weighted Average | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 10.35  
Subordinated Debt | Black-Scholes | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 2,436 $ 2,920
Subordinated Debt | Black-Scholes | Low | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.9 1.05
Subordinated Debt | Black-Scholes | High | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 10.35 10
Subordinated Debt | Black-Scholes | Weighted Average | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 6.97 6.21
Subordinated Debt | Recent Transactions    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments valued using recent transactions $ 980 $ 2,415
Equity | Yield Method | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 1,508 $ 1,487
Equity | Yield Method | Low | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.0890 0.0863
Equity | Yield Method | High | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.1641 0.1641
Equity | Yield Method | Weighted Average | Market Yield Discount Rates    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.1549 0.1528
Equity | Market Approach | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 38,472 $ 29,724
Equity | Market Approach | Low | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 4.5 6
Equity | Market Approach | High | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 19.25 19
Equity | Market Approach | Weighted Average | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 11.84 12.65
Equity | Black-Scholes | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value $ 141  
Equity | Black-Scholes | Low | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 6.01  
Equity | Black-Scholes | High | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 12.5  
Equity | Black-Scholes | Weighted Average | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 6.01  
Equity | Recent Transactions    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments valued using recent transactions $ 2,709 $ 968