v3.26.1
FAIR VALUE HIERARCHY FOR INVESTMENTS—PORTFOLIO COMPOSITION - Schedule of Level 3 Portfolio Investments (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 1,335,387 $ 1,177,507
Transfers Into (Out of) Level 3 Hierarchy 0 0
Redemptions/ Repayments (109,521) (161,149)
New Investments 157,424 213,929
Other 0 0
Ending balance 1,389,403 1,245,563
Net Change in Unrealized Appreciation (Depreciation) 15,071 (5,021)
Investments | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings (10,548) 15,529
Investments | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings 16,661 (253)
Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 1,017,495 895,676
Transfers Into (Out of) Level 3 Hierarchy 0 0
Redemptions/ Repayments (98,960) (152,356)
New Investments 150,918 211,733
Other (715) (12,109)
Ending balance 1,054,761 954,943
Net Change in Unrealized Appreciation (Depreciation) (14,571) (9,540)
Debt | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings 502 23,783
Debt | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings (14,479) (11,784)
Equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 310,102 277,553
Transfers Into (Out of) Level 3 Hierarchy 0 0
Redemptions/ Repayments (10,561) (8,793)
New Investments 6,506 2,196
Other 715 12,109
Ending balance 327,262 284,352
Net Change in Unrealized Appreciation (Depreciation) 30,052 2,529
Equity | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings (11,050) (8,254)
Equity | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings 31,550 9,541
Equity Warrant    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 7,790 4,278
Transfers Into (Out of) Level 3 Hierarchy 0 0
Redemptions/ Repayments 0 0
New Investments 0 0
Other 0 0
Ending balance 7,380 6,268
Net Change in Unrealized Appreciation (Depreciation) (410) 1,990
Equity Warrant | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesRealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings 0 0
Equity Warrant | Income Statement Location [Axis]: us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Gain (loss) included in earnings $ (410) $ 1,990