v3.26.3
Investment Portfolio Financing Arrangements - Additional Information (Details)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Nov. 17, 2025
USD ($)
Jun. 30, 2022
USD ($)
Feb. 22, 2022
USD ($)
lender
May 31, 2026
USD ($)
Sep. 30, 2026
USD ($)
loan
agreement
Sep. 30, 2025
Mar. 31, 2025
USD ($)
lender
Sep. 30, 2026
USD ($)
agreement
loan
Sep. 30, 2025
Dec. 31, 2025
USD ($)
loan
agreement
Jun. 30, 2023
USD ($)
Jun. 06, 2023
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]                          
Term extension                       3 years  
Maximum commitment amount     $ 250.0                   $ 290.0
Number of loans converted to REO and from asset specific financing to mortgage loans | loan         1                
Number of lenders provided credit facility | lender     5                    
Basis spread on variable rate     2.00%                    
Unused borrowing capacity fee         0.19% 0.15%   0.20% 0.19%        
Unused borrowing capacity fee, threshold percentage     50.00%                    
Maximum period permits to finance eligible loans     180 days                    
Initial advance rate     75.00%                    
BMO Harris Bank                          
Debt Instrument [Line Items]                          
Term extension         12 months     12 months          
Basis spread on variable rate               2.00%          
Real estate owned, term         3 years     3 years          
Total         $ 29.0     $ 29.0          
Holdco                          
Debt Instrument [Line Items]                          
Recourse guarantee percentage     100.00%                    
Minimum                          
Debt Instrument [Line Items]                          
Unused borrowing capacity fee     0.15%                    
Maximum                          
Debt Instrument [Line Items]                          
Unused borrowing capacity fee     0.20%                    
Loan Pledged As Collateral                          
Debt Instrument [Line Items]                          
Number of loan investments | loan         7     7   1      
Debt face amount         $ 382.6     $ 382.6   $ 82.0      
After 90 days from initial borrowing                          
Debt Instrument [Line Items]                          
Initial advance rate     65.00%                    
After 135 days from initial borrowing                          
Debt Instrument [Line Items]                          
Initial advance rate     45.00%                    
After 180 days from initial borrowing                          
Debt Instrument [Line Items]                          
Initial advance rate     0.00%                    
Secured credit agreements                          
Debt Instrument [Line Items]                          
Number of secured credit agreements | agreement         4     4   4      
Recourse guarantee percentage               25.00%          
Secured credit agreements | Holdco                          
Debt Instrument [Line Items]                          
Recourse guarantee percentage               25.00%   25.00%      
Secured credit agreements | Commercial Mortgage Loans                          
Debt Instrument [Line Items]                          
Number of secured credit facilities | loan         35     35   24      
Secured credit agreements | Company transfers rights to counter party with option to buy back                          
Debt Instrument [Line Items]                          
Number of secured credit agreements | agreement         3     3          
Line of Credit | Revolving Credit Facility | Revolver                          
Debt Instrument [Line Items]                          
Term extension             3 years            
Maximum commitment amount       $ 100.0     $ 375.0            
Number of lenders provided credit facility | lender             7            
Deferred financing costs       $ 1.0 $ 1.0   $ 3.4 $ 1.0          
Basis spread on variable rate       2.00%                  
Unused borrowing capacity fee, threshold percentage       50.00%                  
Outstanding borrowings         265.0     265.0   $ 31.5      
Line of Credit | Revolving Credit Facility | Revolver | Minimum                          
Debt Instrument [Line Items]                          
Unused borrowing capacity fee       0.15%                  
Line of Credit | Revolving Credit Facility | Revolver | Maximum                          
Debt Instrument [Line Items]                          
Unused borrowing capacity fee       0.25%                  
Asset-specific financing arrangements | HSBC Facility                          
Debt Instrument [Line Items]                          
Maximum commitment amount $ 31.1                        
Asset-specific financing arrangements | BMO Facility                          
Debt Instrument [Line Items]                          
Maximum commitment amount   $ 200.0                      
Asset-specific financing arrangements | Holdco                          
Debt Instrument [Line Items]                          
Recourse guarantee percentage   25.00%                      
Asset-specific financing arrangements | Office Property Mortgage Loan | Holdco                          
Debt Instrument [Line Items]                          
Recourse guarantee percentage 20.00%                        
Mortgage loans payable                          
Debt Instrument [Line Items]                          
Debt face amount         29.1     29.1     $ 31.2    
Mortgage loans payable | Institutional Lender                          
Debt Instrument [Line Items]                          
Debt face amount         $ 31.2     $ 31.2          
Credit facility term               5 years          
Wtd. avg. interest rate         7.70%     7.70%          
Total         $ 30.9     $ 30.9   $ 30.8      
Mortgage loans payable | BMO Harris Bank                          
Debt Instrument [Line Items]                          
Debt face amount         $ 29.1     $ 29.1          
Debt instrument recourse percentage         25.00%     25.00%