Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.24.0.1
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Significant Accounting Policies [Line Items]    
Reverse mortgage loans held for investment, subject to nonrecourse debt $ 8,257,750 $ 7,240,125
Receivables due from investors (in percent) 100.00%  
Earnout Shares, Tranche One    
Significant Accounting Policies [Line Items]    
Volume weighted average price (in dollars per share) $ 12.50  
Number of trading days for determining the volume weighted average share price 20 days  
Number of consecutive trading days for determining the volume weighted average share price 30 days  
Earnout shares to be issued (in percent) 50.00%  
Earnout Shares, Tranche Two    
Significant Accounting Policies [Line Items]    
Volume weighted average price (in dollars per share) $ 15.00  
Number of trading days for determining the volume weighted average share price 20 days  
Number of consecutive trading days for determining the volume weighted average share price 30 days  
Earnout shares to be issued (in percent) 50.00%  
Maximum    
Significant Accounting Policies [Line Items]    
Maximum claim amount (in percent) 98.00%  
Non-agency reverse mortgages    
Significant Accounting Policies [Line Items]    
Reverse mortgage loans held for investment, subject to nonrecourse debt $ 7,631,601 $ 6,370,209
Non-agency reverse mortgages | Maximum    
Significant Accounting Policies [Line Items]    
Reverse mortgage loans held for investment, subject to nonrecourse debt $ 4,000  
After October Two Twenty Seventeen    
Significant Accounting Policies [Line Items]    
Rate of MIP amount on mortgage balance for loans 1.25%  
Before October Two Twenty Seventeen    
Significant Accounting Policies [Line Items]    
Rate of MIP amount on mortgage balance for loans 0.50%