v3.26.1
Fair Value of Financial Instruments - Significant Unobservable Inputs (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year $ 800,100 $ 776,189
Purchases 104,683 86,838
Accretion of discount (amortization of premium) 2,389 2,586
Sales and repayments (87,571) (36,809)
Unrealized gain (loss) $ (3,781) $ (5,767)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax
Paid in-kind interest $ 1,467 $ 210
Net transfers in or out of Level 3 0 0
Realized gain (loss) 3,202  
Fair value at end of year 820,489 823,247
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 $ (3,781) $ (5,767)
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Debt and Equity Securities, Gain (Loss) Debt and Equity Securities, Gain (Loss)
Fair value assets, Level 1 to Level 2 transfers $ 0 $ 0
Fair value, assets, level 2 to level 1 transfers 0 0
Senior Secured First Lien Term Loan    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 561,494 479,581
Purchases 75,763 73,444
Accretion of discount (amortization of premium) 1,542 1,389
Sales and repayments (57,228) (19,537)
Unrealized gain (loss) 1,430 (702)
Paid in-kind interest 1,051 210
Fair value at end of year 584,052 534,385
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 1,430 (702)
Senior Secured Term Loan    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 175,761 240,610
Purchases 19,238  
Accretion of discount (amortization of premium) 623 930
Sales and repayments (13,625) (13,599)
Unrealized gain (loss) (5,943) (2,170)
Paid in-kind interest 144  
Fair value at end of year 176,198 225,771
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 (5,943) (2,170)
Delayed Draw Term Loan    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 36,902 27,378
Purchases 5,589 7,535
Accretion of discount (amortization of premium) 163 165
Sales and repayments (9,299) (957)
Unrealized gain (loss) (363) (1,105)
Paid in-kind interest 224  
Fair value at end of year 33,216 33,016
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 (363) (1,105)
Revolver    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 9,111 14,337
Purchases 2,442 5,717
Accretion of discount (amortization of premium) 61 102
Sales and repayments (3,115) (2,716)
Unrealized gain (loss) 2,853 (759)
Paid in-kind interest 48  
Fair value at end of year 11,400 16,681
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 2,853 (759)
Common Units    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 8,929 4,603
Purchases 568 100
Sales and repayments (4,304)  
Unrealized gain (loss) (2,176) (340)
Realized gain (loss) 3,202  
Fair value at end of year 6,219 4,363
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 (2,176) (340)
Preferred Units    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 7,377 9,663
Purchases 1,051  
Unrealized gain (loss) 532 (724)
Fair value at end of year 8,960 8,939
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 532 (724)
Warrants    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 464 17
Unrealized gain (loss) (63) 33
Fair value at end of year 401 50
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 (63) 33
Convertible Promissory Note    
Reconciliation of investments for which significant unobservable inputs (Level 3) were used in determining fair value    
Fair value at beginning of year 62  
Purchases 32 42
Unrealized gain (loss) (51)  
Fair value at end of year 43 $ 42
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 $ (51)