v3.25.1
Fair Value Measurements - Summary of Significant Unobservable Inputs Used to Value the Company's Level 3 Assets (Detail)
$ in Thousands
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure $ 984,517 $ 679,064
First Lien Senior Secured [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure   665,741
First Lien Senior Secured Debt [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure 901,723  
First Lien Last Out Unitranche Debt [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure 20,347  
Common Equity [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure 348 400
Fair Value, Inputs, Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure 922,418 666,141
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure   665,741
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured [Member] | Income Approach [Member] | Discount Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure   $ 665,741
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured [Member] | Income Approach [Member] | Discount Rate [Member] | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment Company, Investment Owned, Measurement Input   9.11
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured [Member] | Income Approach [Member] | Discount Rate [Member] | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment Company, Investment Owned, Measurement Input   12.92
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured [Member] | Income Approach [Member] | Discount Rate [Member] | Weighted Average [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment Company, Investment Owned, Measurement Input [1]   10.67
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured Debt [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure 901,723  
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured Debt [Member] | Income Approach [Member] | Discount Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure $ 901,723  
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured Debt [Member] | Income Approach [Member] | Discount Rate [Member] | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment Company, Investment Owned, Measurement Input 8.87  
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured Debt [Member] | Income Approach [Member] | Discount Rate [Member] | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment Company, Investment Owned, Measurement Input 18.69  
Fair Value, Inputs, Level 3 [Member] | First Lien Senior Secured Debt [Member] | Income Approach [Member] | Discount Rate [Member] | Weighted Average [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investment Company, Investment Owned, Measurement Input [1] 10.89  
Fair Value, Inputs, Level 3 [Member] | First Lien Last Out Unitranche Debt [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure $ 20,347  
Fair Value, Inputs, Level 3 [Member] | First Lien Last Out Unitranche Debt [Member] | Income Approach [Member] | Discount Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure $ 20,347  
Investment Company, Investment Owned, Measurement Input 9.9  
Fair Value, Inputs, Level 3 [Member] | Common Equity [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure $ 348 $ 400
Fair Value, Inputs, Level 3 [Member] | Common Equity [Member] | Transactional Value [Member] | EBITDA Multiple    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure $ 348  
Investment Company, Investment Owned, Measurement Input 15  
Fair Value, Inputs, Level 3 [Member] | Common Equity [Member] | Transactional Value [Member] | Transaction Price [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Investments, Fair Value Disclosure   $ 400
[1] Weighted average is calculated by weighing the significant unobservable input by the relative fair value of each investment in the category.