v3.26.1
Commercial Mortgage Loans, Held for Investment- Schedule of Non-Performing Status (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
loan
Dec. 31, 2025
USD ($)
loan
Dec. 31, 2024
USD ($)
Non-Performing Financial Instruments [Roll Forward]      
Allowance for credit loss [1] $ 49,173 $ 38,302  
Commercial Mortgage Receivable, Held-For-Investment      
Non-Performing Financial Instruments [Roll Forward]      
Number of loans | loan 177 169  
Allowance for credit loss $ 49,173 $ 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 16,335 4,106  
Commercial Portfolio Segment      
Non-Performing Financial Instruments [Roll Forward]      
Allowance for credit loss 49,507 38,598  
Commercial Portfolio Segment | Specific allowance for credit losses      
Non-Performing Financial Instruments [Roll Forward]      
Allowance for credit loss 16,335 4,106  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment      
Non-Performing Financial Instruments [Roll Forward]      
Allowance for credit loss 49,173 38,302  
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 150,660 346,323  
Less: Removal of non-performing loan amortized cost 55,746 265,573  
Non-performing loan amortized cost end of period 308,894 $ 213,980  
Number of loans | loan   7  
Nonperforming Financial Instruments | Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Office      
Non-Performing Financial Instruments [Roll Forward]      
Number of loans | loan   4  
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 2,000 $ 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 14,300    
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 $ 600 $ 2,000  
Nonperforming Financial Instruments | 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   3  
[1] Includes pledged assets of $409.4 million and $329.2 million as of March 31, 2026 and December 31, 2025, respectively.