v3.26.1
Commercial Mortgage Loans, Held for Investment- Schedule of Non-Performing Status (Details)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
loan
Dec. 31, 2025
USD ($)
loan
Mar. 31, 2026
USD ($)
Dec. 31, 2024
USD ($)
Non-Performing Financial Instruments [Roll Forward]        
Allowance for credit loss [1] $ 54,457 $ 38,302    
Commercial Mortgage Receivable, Held-For-Investment        
Non-Performing Financial Instruments [Roll Forward]        
Number of loans | loan 172 169    
Allowance for credit loss $ 54,457 $ 38,302   $ 78,083
Commercial Mortgage Receivable, Held-For-Investment | Specific allowance for credit losses        
Non-Performing Financial Instruments [Roll Forward]        
Allowance for credit loss 17,842 4,106    
Commercial Portfolio Segment        
Non-Performing Financial Instruments [Roll Forward]        
Allowance for credit loss 54,682 38,598 $ 49,507  
Commercial Portfolio Segment | Specific allowance for credit losses        
Non-Performing Financial Instruments [Roll Forward]        
Allowance for credit loss $ 17,842 4,106 16,335  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment        
Non-Performing Financial Instruments [Roll Forward]        
Number of nonperforming loans on cost recovery status | loan 4      
Allowance for credit loss $ 54,457 $ 38,302    
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Specific allowance for credit losses        
Non-Performing Financial Instruments [Roll Forward]        
Number of nonperforming loans on cost recovery status | loan   4    
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Office        
Non-Performing Financial Instruments [Roll Forward]        
Number of nonperforming loans on cost recovery status | loan 1      
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Office | Specific allowance for credit losses        
Non-Performing Financial Instruments [Roll Forward]        
Number of nonperforming loans on cost recovery status | loan   1    
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Multifamily | Allowance for Credit Loss, Combined Specific        
Non-Performing Financial Instruments [Roll Forward]        
Number of loans | loan 5      
Number of nonperforming loans on cost recovery status | loan 3 3    
Nonperforming Financial Instruments | Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment        
Non-Performing Financial Instruments [Roll Forward]        
Non-performing loan amortized cost at beginning of year, January 1 $ 213,980 $ 133,230    
Addition of non-performing loan amortized cost 280,608 346,323    
Less: Removal of non-performing loan amortized cost 150,364 265,573    
Non-performing loan amortized cost end of period $ 344,224 $ 213,980    
Number of loans | loan 9 7    
Nonperforming Financial Instruments | Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Office | Specific allowance for credit losses | GEORGIA        
Non-Performing Financial Instruments [Roll Forward]        
Allowance for credit loss $ 3,100 $ 4,100    
Nonperforming Financial Instruments | Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Office | Allowance for Credit Loss, Combined Specific | GEORGIA        
Non-Performing Financial Instruments [Roll Forward]        
Allowance for credit loss $ 14,800      
Nonperforming Financial Instruments | Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Multifamily | Specific allowance for credit losses | GEORGIA        
Non-Performing Financial Instruments [Roll Forward]        
Allowance for credit loss   $ 2,000 $ 600  
[1] Includes pledged assets of $243.4 million and $329.2 million as of June 30, 2026 and December 31, 2025, respectively.