v3.26.1
Fair Value of Financial Instruments - 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 $ 1,089,801 $ 385,040
Accretion of discount (amortization of premium) 342 153
Purchases 139,429 308,997
Paid-in-kind interest 977 717
Sales and repayments (89,232) (21,209)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 1,117,385 676,559
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 (19,968) 3,033
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) (4,342) (133)
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) (19,590) 2,994
Subordinated Debt    
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 1,032  
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 1,032  
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  
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  
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) 0  
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 2,384  
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 2,384  
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 1,391,266 418,388
Accretion of discount (amortization of premium) 1,049 242
Purchases 231,073 407,502
Paid-in-kind interest 1,927 1,110
Sales and repayments (161,537) (39,265)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 1,439,771 793,084
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 (19,498) 5,328
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) (4,310) (182)
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) (19,697) 5,289
Total | Asset Based Finance    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 301,465 33,348
Accretion of discount (amortization of premium) 707 89
Purchases 88,228 98,505
Paid-in-kind interest 950 393
Sales and repayments (72,305) (18,056)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 318,970 116,525
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 470 2,295
Total | 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) 32 (49)
Total | 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) $ (107) $ 2,295