v3.25.3
Fair Value Measurement - Summary of Changes in Fair Value of Level 3 Assets by Investment Type (Details) - Level 3 - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance $ 582,495 $ 449,627
Purchases [1] 55,950 14,842
Net Realized Gain (Loss) (60,506) 697
Net Change in Unrealized Appreciation (Depreciation) 57,758 (52,502)
Sales and Settlements [1] (304,560) (179,112)
Net Amortization of Premium/Discount 2,873 1,742
Ending Balance 334,010 235,294
Fair Value Assets Measured On Recurring Basis Change In Unrealized Appreciation Depreciation For Assets Still Held (177) (53,908)
1st Lien/Senior Secured Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance 419,988 303,646
Purchases [1] 34,660 11,341
Net Realized Gain (Loss) (59,274) (1,968)
Net Change in Unrealized Appreciation (Depreciation) 53,809 (42,253)
Sales and Settlements [1] (236,472) (119,096)
Net Amortization of Premium/Discount 2,276 1,197
Ending Balance 214,987 152,867
Fair Value Assets Measured On Recurring Basis Change In Unrealized Appreciation Depreciation For Assets Still Held (994) (43,783)
1st Lien/Last-Out Unitranche    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance 142,219 64,838
Purchases [1] 10,358  
Net Change in Unrealized Appreciation (Depreciation) 256 418
Sales and Settlements [1] (68,088) (107)
Net Amortization of Premium/Discount 674 225
Ending Balance 85,419 65,374
Fair Value Assets Measured On Recurring Basis Change In Unrealized Appreciation Depreciation For Assets Still Held (1,642) 418
2nd Lien/Senior Secured Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance 16,934 52,753
Purchases [1] 1,139 2,239
Net Change in Unrealized Appreciation (Depreciation) 6,517 3,054
Sales and Settlements [1]   (44,872)
Net Amortization of Premium/Discount (77) 525
Ending Balance 24,513 13,699
Fair Value Assets Measured On Recurring Basis Change In Unrealized Appreciation Depreciation For Assets Still Held 6,516 3,334
Unsecured Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance   19,344
Purchases [1]   1,262
Net Change in Unrealized Appreciation (Depreciation)   (11,529)
Sales and Settlements   (8,872)
Net Amortization of Premium/Discount   (205)
Fair Value Assets Measured On Recurring Basis Change In Unrealized Appreciation Depreciation For Assets Still Held   (13,877)
Preferred Stock    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance   3,086
Purchases [1] 5,738  
Net Realized Gain (Loss)   2,158
Net Change in Unrealized Appreciation (Depreciation) (1) [1] (1,590)
Sales and Settlements   (3,654)
Ending Balance 5,737  
Fair Value Assets Measured On Recurring Basis Change In Unrealized Appreciation Depreciation For Assets Still Held (2)  
Common Stock    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance 3,354 5,880
Purchases [1] 4,055  
Net Realized Gain (Loss) (1,232) 605
Net Change in Unrealized Appreciation (Depreciation) (2,823) (626)
Sales and Settlements [1]   (2,505)
Ending Balance 3,354 3,354
Fair Value Assets Measured On Recurring Basis Change In Unrealized Appreciation Depreciation For Assets Still Held $ (4,055)  
Warrants    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning Balance   80
Net Realized Gain (Loss)   (98)
Net Change in Unrealized Appreciation (Depreciation)   24
Sales and Settlements   $ (6)
[1] Purchases may include PIK, capitalized fees, securities received in corporate actions and restructurings. Sales and Settlements may include securities delivered in corporate actions and restructuring of investments.