v3.26.1
Fair Value Measurements - Schedule of Fair Value of Financial Investments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Transfers into Level 3 $ 0  
Transfers out of Level 3 0  
Total Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning of period 2,627,580 $ 1,985,352
Purchases of investments 200,153 171,675
Proceeds from principal repayments and sales of investments (68,234) (61,071)
Accretion of discount/amortization of premium 1,275 1,991
Transfers into Level 3 0 0
Transfers out of Level 3 0 (22,334)
Fair value, end of period 2,743,913 2,072,262
Net change in unrealized appreciation (depreciation) related to financial instruments still held (16,916) (792)
Total Investments | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings 191 (2,497)
Total Investments | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings (17,052) (854)
First Lien Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning of period 2,442,840 1,928,818
Purchases of investments 199,930 120,790
Proceeds from principal repayments and sales of investments (68,234) (55,527)
Accretion of discount/amortization of premium 1,162 1,807
Transfers into Level 3 0 0
Transfers out of Level 3 0 (22,334)
Fair value, end of period 2,570,274 1,970,412
Net change in unrealized appreciation (depreciation) related to financial instruments still held (5,483) (714)
First Lien Debt | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings 191 (2,497)
First Lien Debt | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings (5,615) (645)
Second Lien Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning of period 133,945 50,358
Purchases of investments 0 29,093
Proceeds from principal repayments and sales of investments 0 (5,544)
Accretion of discount/amortization of premium 113 184
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value, end of period 123,306 73,706
Net change in unrealized appreciation (depreciation) related to financial instruments still held (10,750) (254)
Second Lien Debt | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings 0 0
Second Lien Debt | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings (10,752) (385)
Equity Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning of period   6,176
Purchases of investments   21,792
Proceeds from principal repayments and sales of investments   0
Accretion of discount/amortization of premium   0
Transfers into Level 3   0
Transfers out of Level 3   0
Fair value, end of period   28,144
Net change in unrealized appreciation (depreciation) related to financial instruments still held   176
Equity Investments | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings   0
Equity Investments | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings   $ 176
Preferred Equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning of period 43,101  
Purchases of investments 223  
Proceeds from principal repayments and sales of investments 0  
Accretion of discount/amortization of premium 0  
Transfers into Level 3 0  
Transfers out of Level 3 0  
Fair value, end of period 42,986  
Net change in unrealized appreciation (depreciation) related to financial instruments still held (337)  
Preferred Equity | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings 0  
Preferred Equity | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings (338)  
Common Stocks    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning of period 7,694  
Purchases of investments 0  
Proceeds from principal repayments and sales of investments 0  
Accretion of discount/amortization of premium 0  
Transfers into Level 3 0  
Transfers out of Level 3 0  
Fair value, end of period 7,347  
Net change in unrealized appreciation (depreciation) related to financial instruments still held (346)  
Common Stocks | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings 0  
Common Stocks | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net gains (losses) included in earnings $ (347)