v3.25.3
Commercial Mortgage Loans Held for Investment - Schedule of asset specific Cecl reserve (Parenthetical) (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 01, 2025
USD ($)
Jul. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Sep. 30, 2025
USD ($)
Rating
Oct. 28, 2025
USD ($)
Sep. 30, 2024
USD ($)
Mortgage Loans On Real Estate [Line Items]            
Asset specific CECL reserve     $ 7,219,000 $ 4,358,000   $ 16,754,000
Las Vegas, NV Loan            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       $ 5,380,000    
Mortgage loans on real estate maturity date Dec. 31, 2025          
Risk rating for commercial mortgage loans held for investment and real estate securities | Rating       5    
Asset specific CECL reserve       $ 3,150,000    
Las Vegas, NV Loan | Unfunded Loan Commitments            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       0    
Las Vegas, NV Loan | Forbearance and Modification Agreement            
Mortgage Loans On Real Estate [Line Items]            
Loan balance plus all accrued and unpaid interest and lender fees $ 2,250,000          
Payment received from borrower   $ 500,000        
Memphis, TN Loan[Member]            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       $ 2,862,000    
Mortgage loans on real estate maturity date       Nov. 09, 2026    
Risk rating for commercial mortgage loans held for investment and real estate securities | Rating       4    
Asset specific CECL reserve       $ 1,208,000    
Principal balance paid down     $ 5,072,000      
Memphis, TN Loan[Member] | Unfunded Loan Commitments            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       0    
Memphis, TN Loan[Member] | Discounted Payoff Agreement | Subsequent Event            
Mortgage Loans On Real Estate [Line Items]            
Loan Settled with full satisfication of all obligations         $ 1,678,000  
San Diego, CA Loan [Member]            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       $ 13,626,000    
Mortgage loans on real estate maturity date       May 09, 2026    
Risk rating for commercial mortgage loans held for investment and real estate securities | Rating       3    
Asset specific CECL reserve       $ 0    
San Diego, CA Loan [Member] | Unfunded Loan Commitments            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       669,000    
Honolulu, HI Loan [Member]            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       $ 12,700,000    
Mortgage loans on real estate maturity date       Feb. 09, 2026    
Risk rating for commercial mortgage loans held for investment and real estate securities | Rating       3    
Asset specific CECL reserve       $ 0    
Principal balance paid down       750,000    
Honolulu, HI Loan [Member] | Unfunded Loan Commitments            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       0    
Arlington, TX Loan [Member]            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       $ 24,331,000    
Mortgage loans on real estate maturity date       Dec. 09, 2025    
Risk rating for commercial mortgage loans held for investment and real estate securities | Rating       3    
Asset specific CECL reserve       $ 0    
Arlington, TX Loan [Member] | Unfunded Loan Commitments            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       0    
Mangonia Park, FL Loan [Member]            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       $ 17,096,000    
Mortgage loans on real estate maturity date       Apr. 09, 2025    
Mangonia Park, FL Loan [Member] | Unfunded Loan Commitments            
Mortgage Loans On Real Estate [Line Items]            
Mortgage loans on real estate, amortized cost       $ 0