v3.26.1
Summary of Significant Accounting Policies - Additional Information (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 05, 2026
USD ($)
Jun. 30, 2026
USD ($)
Security
Jun. 30, 2026
USD ($)
Security
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Variable Interest Entity [Line Items]          
Financing receivable, after allowance for credit loss   $ 23,300,000 $ 23,300,000    
Cash proceeds from secured borrowings of CMBS securitizations held in variable interest entities     19,769,000    
Reversal of credit losses     (2,210,000) $ 6,497,000  
Nonaccrual, interest income   200,000      
Recoveries     0   $ 0
Individually Evaluated Multifamily Loans          
Variable Interest Entity [Line Items]          
Charge-off recognized to credit losses provision     6,100,000    
Decrease of credit losses provision     8,300,000    
Reversal of credit losses     (100,000)    
Mezzanine Loan          
Variable Interest Entity [Line Items]          
Financing receivable, after allowance for credit loss   12,300,000 12,300,000    
Preferred Equity Loans          
Variable Interest Entity [Line Items]          
Financing receivable, after allowance for credit loss   11,100,000 11,100,000 $ 11,100,000  
Collateral          
Variable Interest Entity [Line Items]          
Collateral amortized cost basis   1,391,655,000 1,391,655,000   $ 686,571,000
Collateral | Individually Evaluated Multifamily Loans          
Variable Interest Entity [Line Items]          
Collateral amortized cost basis   $ 12,300,000 12,300,000    
Ridgeview Place Apartment | Individually Evaluated Multifamily Loans          
Variable Interest Entity [Line Items]          
Decrease of credit losses provision     8,400,000    
Reversal of credit losses     $ (2,300,000)    
Noncontrolling interest in CMBS VIEs          
Variable Interest Entity [Line Items]          
Number of CMBS securities | Security   8 8    
Cash proceeds from secured borrowings of CMBS securitizations held in variable interest entities $ 19,000,000        
Noncontrolling interest in CMBS VIEs | Subordinate Tranche          
Variable Interest Entity [Line Items]          
Variable interest entity, qualitative or quantitative information, ownership percentage     100.00%    
ASU 2023-09          
Variable Interest Entity [Line Items]          
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]   true true    
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]   true true