v3.26.1
Fair Value Measurements - Summary of Fair Value Hierarchy of Cash Equivalents and Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value $ 1,638,034 $ 1,516,663
First Lien Senior Secured Debt Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 1,383,321 1,205,232
Second Lien Senior Secured Debt Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 46,605 48,987
Unsecured Debt Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 82,020 79,786
U.S. Treasury Bill    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 107,377 172,864
Cash Equivalents    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 18,711 9,794
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 126,088 182,658
Level 1 | U.S. Treasury Bill    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 107,377 172,864
Level 1 | Cash Equivalents    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 18,711 9,794
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value   42,515
Level 2 | First Lien Senior Secured Debt Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value   42,515
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 1,511,946 1,291,490
Level 3 | First Lien Senior Secured Debt Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 1,383,321 1,162,717
Level 3 | Second Lien Senior Secured Debt Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value 46,605 48,987
Level 3 | Unsecured Debt Investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total cash equivalents and investments at fair value $ 82,020 $ 79,786