v3.26.1
Fair Value of Financial Instruments - Schedule of Roll Forward Level III (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Senior Secured Loans—First Lien    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period $ 1,839,213 $ 865,488
Accretion of discount (amortization of premium) 1,096 1,484
Purchases 287,714 415,632
Paid-in-kind interest 1,489 1,122
Sales and repayments (180,541) (93,681)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 1,915,672 1,192,056
The amount of total gains or (losses) for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (31,821) 3,699
Senior Secured Loans—First Lien | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) (1,406) (116)
Senior Secured Loans—First Lien | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) (31,893) 2,127
Subordinated Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 2,015 1,667
Accretion of discount (amortization of premium) 1 0
Purchases 206 0
Paid-in-kind interest 141 122
Sales and repayments 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 2,366 1,883
The amount of total gains or (losses) for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date 3 94
Subordinated Debt | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) 0 0
Subordinated Debt | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) 3 94
Asset Based Finance    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 538,994 155,263
Accretion of discount (amortization of premium) 1,312 266
Purchases 170,433 153,145
Paid-in-kind interest 1,512 1,096
Sales and repayments (172,757) (45,332)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 537,297 270,283
The amount of total gains or (losses) for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (1,795) 6,125
Asset Based Finance | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) 808 (151)
Asset Based Finance | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) (3,005) 5,996
Equity/Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 0  
Accretion of discount (amortization of premium) 0  
Purchases 479  
Paid-in-kind interest 0  
Sales and repayments 0  
Transfers into Level 3 0  
Transfers out of Level 3 0  
Fair value at end of period 479  
The amount of total gains or (losses) for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date 0  
Equity/Other | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) 0  
Equity/Other | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) 0  
Total    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 2,380,222 1,022,418
Accretion of discount (amortization of premium) 2,409 1,750
Purchases 458,832 568,777
Paid-in-kind interest 3,142 2,340
Sales and repayments (353,298) (139,013)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 2,455,814 1,464,222
The amount of total gains or (losses) for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (33,613) 9,918
Total | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) (598) (267)
Total | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) / Net change in unrealized appreciation (depreciation) $ (34,895) $ 8,217