v3.26.1
Fair Value Measurement - Summary of Changes in Fair Value of Level 3 Assets By Investment Type (Details) - Level 3 - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance $ 887,532 $ 577,192
Purchases [1] 66,022 75,183
Net Change in Unrealized Appreciation (Depreciation) (3,184) (497)
Sales and Settlements [1] (37,925) (2,834)
Net Amortization of Premium/Discount 767 410
Ending Balance $ 913,212 $ 649,454
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Net Change in Unrealized Appreciation (Depreciation) for assets still held $ (3,104) $ (533)
Common Stock    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance 1,397 2,309
Net Change in Unrealized Appreciation (Depreciation) 226 (302)
Ending Balance 1,623 2,007
Net Change in Unrealized Appreciation (Depreciation) for assets still held 226 (302)
Preferred Stock    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Purchases [1] 101  
Ending Balance 101  
1st Lien/Senior Secured Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance 830,824 535,247
Purchases [1] 64,800 74,352
Net Change in Unrealized Appreciation (Depreciation) (3,276) (171)
Sales and Settlements [1] (30,802) (2,834)
Net Amortization of Premium/Discount 688 385
Ending Balance 862,234 606,979
Net Change in Unrealized Appreciation (Depreciation) for assets still held (3,223) (207)
1st Lien/Last-Out Unitranche    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance 55,311 39,636
Purchases [1] 1,121 831
Net Change in Unrealized Appreciation (Depreciation) (134) (24)
Sales and Settlements [1] (7,123)  
Net Amortization of Premium/Discount 79 25
Ending Balance 49,254 40,468
Net Change in Unrealized Appreciation (Depreciation) for assets still held $ (107) $ (24)
[1] Purchases may include PIK, securities received in corporate actions and restructurings. Sales and Settlements may include securities delivered in corporate actions and restructuring of investments.