v3.26.1
Investment in Loans Schedule of Geographic concentration - Reverse Mortgage Loans (Details) - Financing Receivables, Unpaid Principal Balance [Member] - Geographic Concentration Risk [Member] - Reverse mortgage loans
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 100.00% 100.00%
CALIFORNIA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 30.00% 29.90%
FLORIDA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 8.90% 8.90%
COLORADO    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 6.50% 6.60%
ARIZONA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 6.10% 6.20%
WASHINGTON    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 5.20% 5.20%
UTAH    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 4.90% 4.90%
TEXAS    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 4.90% 4.90%
OREGON    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.80% 2.80%
MASSACHUSETTS    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.20% 2.20%
IDAHO    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.50% 2.50%
NEW YORK    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.80% 2.70%
NEVADA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 2.10% 2.10%
NORTH CAROLINA    
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 1.40% 1.40%
OHIO    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.20% 1.30%
NEW JERSEY    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.50% 1.40%
SOUTH CAROLINA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.40% 1.40%
GEORGIA    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.70% 1.70%
NEW JERSEY    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.00% 1.00%
TENNESSEE    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 1.50% 1.60%
Other [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of Total Outstanding Unpaid Principal Balance 9.20% 9.10%