v3.26.1
Commercial Mortgage Loans, Held for Investment - Schedule of Allocation by Risk Rating (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
loan
Dec. 31, 2025
USD ($)
loan
Dec. 31, 2024
USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]      
Amortized cost $ 22,000,000 $ 21,600,000  
Amortized Cost by Year of Origination      
Total Amortized Cost 22,000,000 21,600,000  
Allowance for credit losses [1] (49,173) (38,302)  
Total commercial mortgage loans, held for investment, net [1] $ 4,546,828 $ 4,383,134  
Commercial Mortgage Receivable, Held-For-Investment      
Financing Receivable, Credit Quality Indicator [Line Items]      
Number of Loans | loan 177 169  
Amortized cost $ 4,596,001 $ 4,421,436  
Amortized Cost by Year of Origination      
Total Amortized Cost 4,596,001 4,421,436  
Allowance for credit losses (49,173) (38,302) $ (78,083)
Total commercial mortgage loans, held for investment, net 4,546,828 4,383,134  
Commercial Portfolio Segment      
Amortized Cost by Year of Origination      
Allowance for credit losses (49,507) (38,598)  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment      
Financing Receivable, Credit Quality Indicator [Line Items]      
Amortized cost 4,596,001 4,421,436  
Amortized Cost by Year of Origination      
Year one, originated in current fiscal year 335,970 982,678  
Year two, originated in prior fiscal year one 1,124,938 1,480,534  
Year three, originated in prior fiscal year two 1,388,254 452,282  
Year four, originated in prior fiscal year three 426,052 791,010  
Year five, original in prior fiscal year four 737,002 658,522  
Prior 583,785 56,410  
Total Amortized Cost 4,596,001 4,421,436  
Allowance for credit losses (49,173) (38,302)  
Total commercial mortgage loans, held for investment, net $ 4,546,828 $ 4,383,134  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | Credit Concentration Risk | Commercial mortgage loans, held for investment      
Amortized Cost by Year of Origination      
% of Portfolio 100.00% 100.00%  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 1      
Financing Receivable, Credit Quality Indicator [Line Items]      
Amortized cost $ 0 $ 0  
Amortized Cost by Year of Origination      
Year one, originated in current fiscal year 0 0  
Year two, originated in prior fiscal year one 0 0  
Year three, originated in prior fiscal year two 0 0  
Year four, originated in prior fiscal year three 0 0  
Year five, original in prior fiscal year four 0 0  
Prior 0 0  
Total Amortized Cost $ 0 $ 0  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 1 | Credit Concentration Risk | Commercial mortgage loans, held for investment      
Amortized Cost by Year of Origination      
% of Portfolio 0.00% 0.00%  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 2      
Financing Receivable, Credit Quality Indicator [Line Items]      
Amortized cost $ 3,169,321 $ 3,202,379  
Amortized Cost by Year of Origination      
Year one, originated in current fiscal year 335,970 982,678  
Year two, originated in prior fiscal year one 1,053,023 1,175,376  
Year three, originated in prior fiscal year two 969,099 322,490  
Year four, originated in prior fiscal year three 296,753 387,548  
Year five, original in prior fiscal year four 285,640 313,728  
Prior 228,836 20,559  
Total Amortized Cost $ 3,169,321 $ 3,202,379  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 2 | Credit Concentration Risk | Commercial mortgage loans, held for investment      
Amortized Cost by Year of Origination      
% of Portfolio 69.00% 72.40%  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 3      
Financing Receivable, Credit Quality Indicator [Line Items]      
Amortized cost $ 964,427 $ 848,296  
Amortized Cost by Year of Origination      
Year one, originated in current fiscal year 0 0  
Year two, originated in prior fiscal year one 71,915 305,158  
Year three, originated in prior fiscal year two 383,275 129,792  
Year four, originated in prior fiscal year three 129,299 220,090  
Year five, original in prior fiscal year four 268,147 178,500  
Prior 111,791 14,756  
Total Amortized Cost $ 964,427 $ 848,296  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 3 | Credit Concentration Risk | Commercial mortgage loans, held for investment      
Amortized Cost by Year of Origination      
% of Portfolio 21.00% 19.20%  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 4      
Financing Receivable, Credit Quality Indicator [Line Items]      
Amortized cost $ 281,404 $ 246,679  
Amortized Cost by Year of Origination      
Year one, originated in current fiscal year 0 0  
Year two, originated in prior fiscal year one 0 0  
Year three, originated in prior fiscal year two 35,880 0  
Year four, originated in prior fiscal year three 0 138,889  
Year five, original in prior fiscal year four 138,732 107,790  
Prior 106,792 0  
Total Amortized Cost $ 281,404 $ 246,679  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 4 | Credit Concentration Risk | Commercial mortgage loans, held for investment      
Amortized Cost by Year of Origination      
% of Portfolio 6.10% 5.60%  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 5      
Financing Receivable, Credit Quality Indicator [Line Items]      
Amortized cost $ 180,849 $ 124,082  
Amortized Cost by Year of Origination      
Year one, originated in current fiscal year 0 0  
Year two, originated in prior fiscal year one 0 0  
Year three, originated in prior fiscal year two 0 0  
Year four, originated in prior fiscal year three 0 44,483  
Year five, original in prior fiscal year four 44,483 58,504  
Prior 136,366 21,095  
Total Amortized Cost $ 180,849 $ 124,082  
Commercial Portfolio Segment | Commercial Mortgage Receivable, Held-For-Investment | 5 | Credit Concentration Risk | Commercial mortgage loans, held for investment      
Amortized Cost by Year of Origination      
% of Portfolio 3.90% 2.80%  
Commercial Mortgage Receivable, Held-For-Investment      
Financing Receivable, Credit Quality Indicator [Line Items]      
Number of Loans | loan 177 169  
Amortized cost $ 4,609,278 $ 4,435,511  
Amortized Cost by Year of Origination      
Total Amortized Cost $ 4,609,278 $ 4,435,511  
Commercial Mortgage Receivable, Held-For-Investment | 1      
Financing Receivable, Credit Quality Indicator [Line Items]      
Number of Loans | loan 0 0  
Amortized cost $ 0 $ 0  
Amortized Cost by Year of Origination      
Total Amortized Cost $ 0 $ 0  
Commercial Mortgage Receivable, Held-For-Investment | 2      
Financing Receivable, Credit Quality Indicator [Line Items]      
Number of Loans | loan 140 137  
Amortized cost $ 3,179,650 $ 3,213,933  
Amortized Cost by Year of Origination      
Total Amortized Cost $ 3,179,650 $ 3,213,933  
Commercial Mortgage Receivable, Held-For-Investment | 3      
Financing Receivable, Credit Quality Indicator [Line Items]      
Number of Loans | loan 26 22  
Amortized cost $ 964,906 $ 848,719  
Amortized Cost by Year of Origination      
Total Amortized Cost $ 964,906 $ 848,719  
Commercial Mortgage Receivable, Held-For-Investment | 4      
Financing Receivable, Credit Quality Indicator [Line Items]      
Number of Loans | loan 7 6  
Amortized cost $ 281,406 $ 246,682  
Amortized Cost by Year of Origination      
Total Amortized Cost $ 281,406 $ 246,682  
Commercial Mortgage Receivable, Held-For-Investment | 5      
Financing Receivable, Credit Quality Indicator [Line Items]      
Number of Loans | loan 4 4  
Amortized cost $ 183,316 $ 126,177  
Amortized Cost by Year of Origination      
Total Amortized Cost $ 183,316 $ 126,177  
[1] Includes pledged assets of $409.4 million and $329.2 million as of March 31, 2026 and December 31, 2025, respectively.