v3.26.1
Investment in Loans (Schedule of Commercial Loans: Geographic Distribution) (Details) - Geographic Concentration Risk [Member] - Commercial mortgage loans - Financing Receivables, Unpaid Principal Balance [Member]
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 100.00% 100.00%
FLORIDA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 30.10% 24.30%
NEW YORK    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 25.80% 19.90%
NEW JERSEY    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.20% 2.20%
VIRGINIA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.20% 4.40%
CONNECTICUT    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.70% 1.80%
MASSACHUSETTS    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 5.70% 8.00%
PENNSYLVANIA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.70% 1.80%
TENNESSEE    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.10% 1.00%
ILLINOIS    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.30% 3.80%
Other [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.10% 2.20%
MICHIGAN    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 0.00% 1.90%
TEXAS    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 12.30% 11.50%
GEORGIA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.90% 2.80%
WASHINGTON    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.40% 1.50%
LOUISIANA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.60% 2.70%
COLORADO    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 0.00% 1.80%
MISSISSIPPI    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.30% 1.30%
MARYLAND    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.00% 1.00%
SOUTH CAROLINA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.80% 6.10%
KENTUCKY    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 3.80% 0.00%