v3.26.1
Fair Value of Financial Instruments - Schedule of Summarized Financial Information For SLF (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
ASSETS        
Investments, at fair value (amortized cost of $724,777 and $733,390, respectively) $ 4,050,457 [1],[2],[3]   $ 4,071,008 [4],[5],[6]  
Amortized cost 4,146,165 [1],[2],[3]   4,178,354 [4],[5],[6]  
Total assets 4,192,198   4,247,887  
LIABILITIES        
Deferred financing costs 13,984   14,922  
Secured borrowings 0   0  
Other liabilities 3,051   1,292  
Total liabilities 2,283,109   2,330,383  
MEMBERS’ CAPITAL        
Total members’ capital 1,831,650 $ 1,898,833 1,840,070 $ 1,910,377
Total liabilities, redeemable convertible preferred stock, and net assets attributable to common stock 4,192,198   4,247,887  
Investment income:        
Total investment income 98,215 107,517    
Operating expenses:        
Interest and credit facility financing expenses 34,566 33,852    
Total expenses 61,522 62,238    
Net investment income 36,549 44,924    
Realized and unrealized gain (loss) on investments and extinguishment of debt:        
Net realized and unrealized gain (loss) on investments and extinguishment of debt (18,078) (20,065)    
FBLC Senior Loan Fund, LLC        
ASSETS        
Investments, at fair value (amortized cost of $724,777 and $733,390, respectively) 678,693   704,292  
Amortized cost 724,777   733,390  
Cash and other assets 59,860   47,224  
Total assets 738,553   751,516  
LIABILITIES        
Revolving credit facilities (net of deferred financing costs of $1,277 and $1,445, respectively) 436,223   450,555  
Deferred financing costs 1,277   1,445  
Secured borrowings 530   599  
Other liabilities 42,670   22,715  
Total liabilities 479,423   473,869  
MEMBERS’ CAPITAL        
Total members’ capital 259,130   277,647  
Total liabilities, redeemable convertible preferred stock, and net assets attributable to common stock 738,553   $ 751,516  
Investment income:        
Total investment income 14,150 22,797    
Operating expenses:        
Interest and credit facility financing expenses 6,649 9,098    
Other expenses 626 610    
Total expenses 7,275 9,708    
Net investment income 6,875 13,089    
Realized and unrealized gain (loss) on investments and extinguishment of debt:        
Net realized and unrealized gain (loss) on investments and extinguishment of debt (19,101) (11,866)    
Net increase (decrease) in members’ capital resulting from operations $ (12,226) $ 1,223    
[1] Percentages are based on net assets attributable to common stock as of March 31, 2026.
[2] Unless otherwise indicated, all investments in the consolidated schedules of investments are non-affiliated, non-controlled investments.
[3] Unless otherwise indicated, all of the Company's investments or a portion thereof are pledged as collateral under the JPM Revolver Facility.
[4] Percentages are based on net assets attributable to common stock as of December 31, 2025.
[5] Unless otherwise indicated, all investments in the consolidated schedules of investments are non-affiliated, non-controlled investments.
[6] Unless otherwise indicated, all of the Company's investments or a portion thereof are pledged as collateral under the JPM Revolver Facility (as defined below).