v3.26.1
Borrowings - BCCI SPV 1 and SPV-2 Credit Facility (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Dec. 10, 2025
Oct. 11, 2024
Mar. 08, 2024
Feb. 23, 2024
Feb. 06, 2024
Jan. 23, 2024
Dec. 08, 2023
Oct. 31, 2023
Oct. 04, 2023
Mar. 30, 2023
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Mar. 28, 2025
Mar. 10, 2025
Dec. 07, 2023
Borrowings                                
Asset coverage ratio                     197.00% 199.00% 197.00%      
Deferred financing costs                     $ 5,083   $ 5,653      
Line of credit payable                     428,960   412,060      
Interest payable on line of credit                     6,230   7,546      
BCCI SPV-1 Credit Facility | Bank OZK                                
Borrowings                                
Commitment transferred from keybank national association           $ 50,000                    
BCCI SPV-1 Credit Facility | Fifth Third Bank, National Association                                
Borrowings                                
Issuance of common shares, net         $ 55,000                      
SPV-1 | KeyBank National Association                                
Borrowings                                
Maximum principal amount         5,000                      
Commitment fee         $ 310,000                      
Issuance of common shares, net       $ 5,000                        
SPV-1 | Bank OZK                                
Borrowings                                
Maximum principal amount           75,000                    
Increased the facility amount           $ 250,000                    
SPV-1 | Bank of Hope                                
Borrowings                                
Issuance of common shares, net       15,000                        
SPV-1 | Wilmington Savings Fund Society                                
Borrowings                                
Maximum principal amount       10,000                        
Commitment fee       $ 330,000                        
SPV-1 | Mitsubishi HC Capital America                                
Borrowings                                
Maximum principal amount     $ 20,000                          
Commitment fee     $ 350,000                          
SPV-1 | Optum Bank, Inc                                
Borrowings                                
Maximum principal amount               $ 20,000                
Increased the facility amount               $ 175,000                
SPV-1 | Credit Facility                                
Borrowings                                
Amount initially committed                   $ 100,000            
Maximum principal amount                   $ 350,000            
Maturity date                   24 months            
Commitment fee                 $ 155,000              
Undrawn portion of line of credit                     71,040   87,940      
Line of credit payable                     278,960   262,060      
Debt instrument interest rate, per annum                   2.15%            
SPV-1 | Credit Facility | KeyBank National Association                                
Borrowings                                
Maximum principal amount             $ 150,000                 $ 100,000
Commitment fee             $ 225,000                  
SPV-1 | BCCI SPV-1 Credit Facility                                
Borrowings                                
Deferred financing costs                     3,718   4,130      
SPV-2 | Credit Facility                                
Borrowings                                
Amount initially committed   $ 75,000                       $ 50,000 $ 25,000  
Maximum principal amount   $ 200,000                       $ 150,000 $ 100,000  
Deferred financing costs                     1,365   1,523      
Undrawn portion of line of credit                     0   0      
Line of credit payable                     $ 150,000   $ 150,000      
Debt instrument interest rate, per annum 2.15% 2.15%                            
Interest rate at the event of default 2.00%