v3.25.4
FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Level 3 Inputs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 43,372 $ 157,048
Net investment income    
Net foreign exchange gains (losses) 34 (7)
Purchases 157,320 4,217
Settlements (4,524) (3,493)
Ending balance 182,076 43,372
Corporate    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 0  
Net investment income    
Net foreign exchange gains (losses) 0  
Purchases 114,256  
Settlements 0  
Ending balance 114,256 0
Asset-backed    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 0  
Net investment income    
Net foreign exchange gains (losses) 0  
Purchases 42,064  
Settlements (4,309)  
Ending balance 39,859 0
Direct private equity investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance 43,777 59,905
Net investment income    
Net foreign exchange gains (losses) 34 (7)
Purchases 1,000 577
Settlements 0 0
Ending balance 27,995 43,777
Other Assets and (Liabilities)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance (405) (515)
Net investment income    
Net foreign exchange gains (losses) 0 0
Purchases 0 3,640
Settlements (215) (156)
Ending balance (34) (405)
Term loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 0 97,658
Net investment income    
Net foreign exchange gains (losses)   0
Purchases   0
Settlements   (3,337)
Ending balance   0
Significant Unobservable Inputs (Level 3)    
Net investment income    
Sales   (98,217)
Significant Unobservable Inputs (Level 3) | Direct private equity investments    
Net investment income    
Sales   (270)
Significant Unobservable Inputs (Level 3) | Other Assets and (Liabilities)    
Net investment income    
Sales   (3,626)
Significant Unobservable Inputs (Level 3) | Term loans    
Net investment income    
Sales   $ (94,321)
Net investment income    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net investment income (Note 5) Net investment income (Note 5)
Net investment income    
Net in earnings (loss) $ 2,408 $ 258
Net investment income | Corporate    
Net investment income    
Net in earnings (loss) 0  
Net investment income | Asset-backed    
Net investment income    
Net in earnings (loss) 2,104  
Net investment income | Direct private equity investments    
Net investment income    
Net in earnings (loss) 304 258
Net investment income | Other Assets and (Liabilities)    
Net investment income    
Net in earnings (loss) $ 0 0
Net investment income | Term loans    
Net investment income    
Net in earnings (loss)   $ 0
Net realized and unrealized gains (losses) on investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net realized and unrealized gains (losses) on investments Net realized and unrealized gains (losses) on investments
Net investment income    
Net in earnings (loss) $ (17,120) $ (16,686)
Net realized and unrealized gains (losses) on investments | Corporate    
Net investment income    
Net in earnings (loss) 0  
Net realized and unrealized gains (losses) on investments | Asset-backed    
Net investment income    
Net in earnings (loss) 0  
Net realized and unrealized gains (losses) on investments | Direct private equity investments    
Net investment income    
Net in earnings (loss) (17,120) (16,686)
Net realized and unrealized gains (losses) on investments | Other Assets and (Liabilities)    
Net investment income    
Net in earnings (loss) $ 0 0
Net realized and unrealized gains (losses) on investments | Term loans    
Net investment income    
Net in earnings (loss)   $ 0
Other income (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other income (loss) Other income (loss)
Net investment income    
Net in earnings (loss) $ 586 $ 252
Other income (loss) | Corporate    
Net investment income    
Net in earnings (loss) 0  
Other income (loss) | Asset-backed    
Net investment income    
Net in earnings (loss) 0  
Other income (loss) | Direct private equity investments    
Net investment income    
Net in earnings (loss) 0 0
Other income (loss) | Other Assets and (Liabilities)    
Net investment income    
Net in earnings (loss) $ 586 252
Other income (loss) | Term loans    
Net investment income    
Net in earnings (loss)   $ 0