v3.25.2
Investment Valuations and Fair Value Measurements - Reconciliation of Beginning and Ending Balances for Total Investments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Investment Valuations And Fair Value Measurements [Line Items]        
Net change in unrealized appreciation/(depreciation)     $ 21,029 $ 2,595
Level 3        
Investment Valuations And Fair Value Measurements [Line Items]        
Beginning Balance $ 1,099,126 $ 823,989 942,127 742,916
Purchases, including payments received in-kind 264,705 157,484 440,331 299,895
Sales and paydowns of investments (106,170) (37,773) (121,706) (96,071)
Amortization of premium and accretion of discount, net $ 2,267 $ 1,685 $ 3,703 $ 3,523
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Realized Investment Gains (Losses) Realized Investment Gains (Losses) Realized Investment Gains (Losses) Realized Investment Gains (Losses)
Net realized gain (loss) $ (75) $ (3) $ (75) $ 106
Net change in unrealized appreciation/(depreciation) (16,392) 2,758 (20,919) (2,229)
Ending Balance 1,243,461 948,140 1,243,461 948,140
Change in net unrealized appreciation/(depreciation) in investments held (15,511) 2,755 (20,039) (592)
Level 3 | Debt        
Investment Valuations And Fair Value Measurements [Line Items]        
Beginning Balance 1,097,095 823,989 941,903 742,916
Purchases, including payments received in-kind 263,529 157,484 438,398 299,895
Sales and paydowns of investments (105,893) (37,773) (121,305) (96,071)
Amortization of premium and accretion of discount, net $ 2,267 $ 1,685 $ 3,703 $ 3,523
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Realized Investment Gains (Losses) Realized Investment Gains (Losses) Realized Investment Gains (Losses) Realized Investment Gains (Losses)
Net realized gain (loss) $ (75) $ (3) $ (75) $ 106
Net change in unrealized appreciation/(depreciation) (22,002) 1,643 (27,703) (3,344)
Ending Balance 1,234,921 947,025 1,234,921 947,025
Change in net unrealized appreciation/(depreciation) in investments held (21,121) 1,640 (26,823) (1,707)
Level 3 | Equity        
Investment Valuations And Fair Value Measurements [Line Items]        
Beginning Balance 2,031 0 224 0
Purchases, including payments received in-kind 1,176 0 1,933 0
Sales and paydowns of investments (277) 0 (401) 0
Amortization of premium and accretion of discount, net $ 0 $ 0 $ 0 $ 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Realized Investment Gains (Losses) Realized Investment Gains (Losses) Realized Investment Gains (Losses) Realized Investment Gains (Losses)
Net realized gain (loss) $ 0 $ 0 $ 0 $ 0
Net change in unrealized appreciation/(depreciation) 5,610 1,115 6,784 1,115
Ending Balance 8,540 1,115 8,540 1,115
Change in net unrealized appreciation/(depreciation) in investments held $ 5,610 $ 1,115 $ 6,784 $ 1,115