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Fair Value Measurements - Summary of Significant Unobservable Inputs by Valuation Technique to Determine Fair Value (Details)
$ in Thousands
Sep. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value $ 518,553 $ 454,481
Level 3 | Enterprise Value | EBITDA Multiples | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range   3.5
Equity investments, Warrants range   3.5
Level 3 | Enterprise Value | EBITDA Multiples | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range   30
Equity investments, Warrants range   3.5
Level 3 | Enterprise Value | EBITDA Multiples | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range   11
Equity investments, Warrants range   3.5
Level 3 | Enterprise Value | Revenue Multiples | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range   0.8
Equity investments, Warrants range   4
Level 3 | Enterprise Value | Revenue Multiples | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range   9
Equity investments, Warrants range   4
Level 3 | Enterprise Value | Revenue Multiples | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range   6.6
Equity investments, Warrants range   4
Level 3 | Enterprise Value Waterfall | EBITDA Multiples    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity Fair Value $ 133,914 $ 132,741
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Assets Assets
Equity Investments, Warrants fair value $ 238 $ 7,633
Level 3 | Enterprise Value Waterfall | EBITDA Multiples | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range 3.5  
Equity investments, Warrants range 3.5  
Level 3 | Enterprise Value Waterfall | EBITDA Multiples | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range 24  
Equity investments, Warrants range 3.5  
Level 3 | Enterprise Value Waterfall | EBITDA Multiples | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range 10  
Equity investments, Warrants range 3.5  
Level 3 | Enterprise Value Waterfall | Revenue Multiples    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity Fair Value $ 9,180 5,630
Equity Investments, Warrants fair value $ 69 0
Level 3 | Enterprise Value Waterfall | Revenue Multiples | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range 0.7  
Equity investments, Warrants range 4  
Level 3 | Enterprise Value Waterfall | Revenue Multiples | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range 9  
Equity investments, Warrants range 4  
Level 3 | Enterprise Value Waterfall | Revenue Multiples | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Equity, Range 5.9  
Equity investments, Warrants range 4  
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value $ 107,440 $ 142,839
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.115 0.104
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.20 0.20
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.133 0.132
Level 3 | Subordinated Debt | Enterprise Value Waterfall | EBITDA Multiples    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value $ 265  
Level 3 | Subordinated Debt | Enterprise Value Waterfall | EBITDA Multiples | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 6  
Level 3 | Subordinated Debt | Enterprise Value Waterfall | EBITDA Multiples | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 6  
Level 3 | Subordinated Debt | Enterprise Value Waterfall | EBITDA Multiples | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 6  
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value $ 859,375 $ 714,595
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.076 0.078
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.567 0.262
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.143 0.145
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value   $ 3,525
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range   1
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range   1
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range   1
Level 3 | First Lien Debt | Enterprise Value Waterfall | Revenue Multiples    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value $ 1,784  
Level 3 | First Lien Debt | Enterprise Value Waterfall | Revenue Multiples | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.007  
Level 3 | First Lien Debt | Enterprise Value Waterfall | Revenue Multiples | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.007  
Level 3 | First Lien Debt | Enterprise Value Waterfall | Revenue Multiples | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.007  
Level 3 | Second Lien Debt | Discounted Cash Flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value   $ 9,600
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value $ 79,123 $ 79,106
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.128 0.134
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.225 0.555
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 0.151 0.207
Level 3 | Second Lien Debt | Enterprise Value Waterfall | EBITDA Multiples    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Fair Value $ 1,360  
Level 3 | Second Lien Debt | Enterprise Value Waterfall | EBITDA Multiples | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 6  
Level 3 | Second Lien Debt | Enterprise Value Waterfall | EBITDA Multiples | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 6  
Level 3 | Second Lien Debt | Enterprise Value Waterfall | EBITDA Multiples | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Debt Investments, Range 6  
Level 3 | Second Lien Debt | Option Pricing | Volatility of credit    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity Investments, Warrants fair value   $ 4,437
Level 3 | Second Lien Debt | Option Pricing | Volatility of credit | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity investments, Warrants range   85
Level 3 | Second Lien Debt | Option Pricing | Volatility of credit | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity investments, Warrants range   85
Level 3 | Second Lien Debt | Option Pricing | Volatility of credit | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Equity investments, Warrants range   (85)