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Fair Value Measurement - Summary of Investment Assets Categorized within Fair Value Hierarchy (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets $ 349,200 $ 281,533
Total investments at fair value 413,804 [1] 332,710 [2]
Receivable    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investments at fair value [3] 64,604 51,177
Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 214,667 236,718
Equity/Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 45,835 36,367
Short Term Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 88,698 8,448
Level 1    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 94,135 11,878
Level 1 | Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 1,548  
Level 1 | Equity/Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 3,889 3,430
Level 1 | Short Term Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 88,698 8,448
Level 2    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 76,064 76,764
Level 2 | Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 76,064 76,764
Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 179,001 192,891
Level 3 | Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets 137,055 159,954
Level 3 | Equity/Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total investment assets $ 41,946 $ 32,937
[1] As of period end, the aggregate gross unrealized appreciation for all securities in which there was an excess of value over tax cost was $20,968; the aggregate gross unrealized depreciation for all securities in which there was an excess of tax cost over value was $(70,085); the net unrealized depreciation was $(49,117); the aggregate cost of securities for Federal income tax purposes was $438,585.
[2] As of period end, the aggregate gross unrealized appreciation for all securities in which there was an excess of value over tax cost was $16,176; the aggregate gross unrealized depreciation for all securities in which there was an excess of tax cost over value was $37,761; the net unrealized depreciation was $(21,585); the aggregate cost of securities for Federal income tax purposes was $354,295.
[3] Certain investments that are measured at fair value using net asset value (“NAV”) have not been categorized in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amount presented in the Statements of Assets and Liabilities.