v3.26.1
Commercial Mortgage Loans, Held for Investment - Schedule of Commercial Mortgage Loans, Held for Investment Portfolio (Details) - Commercial Mortgage Receivable, Held-For-Investment - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 4,343,396 $ 4,435,511
Customer Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 100.00% 100.00%
Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 100.00% 100.00%
Southeast    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 1,733,685 $ 1,832,831
Southeast | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 39.90% 41.40%
Southwest    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 1,332,898 $ 1,431,471
Southwest | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 30.70% 32.30%
Mideast    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 394,883 $ 348,750
Mideast | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 9.10% 7.90%
Far West    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 160,134 $ 239,874
Far West | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 3.70% 5.40%
New England    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 137,211 $ 125,982
New England | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 3.20% 2.80%
Great Lakes    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 126,749 $ 108,095
Great Lakes | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 2.90% 2.40%
Rocky Mountain    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 113,030 $ 76,180
Rocky Mountain | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 2.60% 1.70%
Various    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 344,806 $ 272,328
Various | Geographic Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 7.90% 6.10%
Multifamily    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 3,467,741 $ 3,434,672
Multifamily | Customer Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 79.80% 77.50%
Hospitality    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 432,631 $ 515,144
Hospitality | Customer Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 10.00% 11.60%
Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 268,321 $ 309,522
Industrial | Customer Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 6.20% 7.00%
Office    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 56,426 $ 58,259
Office | Customer Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 1.30% 1.30%
Retail    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 0 $ 1,986
Retail | Customer Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 0.00% 0.00%
Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Par Value $ 118,277 $ 115,928
Other | Customer Concentration Risk | Commercial mortgage loans, held for investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage 2.70% 2.60%