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Debt - Mortgage Loans Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2024
USD ($)
property
extension
loan
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
property
Debt Instrument [Line Items]      
Real estate investment property, at cost $ 21,605,035   $ 21,551,896
Investments in single-family residential properties, net 17,186,871   17,289,214
Investments in debt securities, net 86,333   86,471
Payments on mortgage loans 5,799 $ 4,375  
Level 2      
Debt Instrument [Line Items]      
Investments in debt securities, net $ 86,333   $ 86,471
Mortgage Loans      
Debt Instrument [Line Items]      
Extension term 1 year    
Debt instrument, loan principal as a percentage of mortgage pool 5.00%    
Payments on mortgage loans $ 5,799 $ 4,375  
Mortgage Loans | Residential Real Estate      
Debt Instrument [Line Items]      
Number of real estate properties | property 10,549   10,581
Real estate investment property, at cost $ 2,344,145   $ 2,348,044
Investments in single-family residential properties, net $ 1,756,659   $ 1,779,169
IH 2018-1, IH 2018-2, IH 2018-3, IH 2018-4 | Mortgage Loans      
Debt Instrument [Line Items]      
Number of components | loan 6    
Extension term 1 year    
IH 2018-1, IH 2018-2, IH 2018-3, IH 2018-4 | Mortgage Loans | Minimum      
Debt Instrument [Line Items]      
Initial term 2 years    
IH 2018-1, IH 2018-2, IH 2018-3, IH 2018-4 | Mortgage Loans | Maximum      
Debt Instrument [Line Items]      
Number of extensions | extension 5    
IH1 2017-1 | Mortgage Loans      
Debt Instrument [Line Items]      
Number of components | loan 2    
Debt instrument term 10 years    
Interest rate 4.23%    
IH1 2017-1 | Mortgage Loans | Class B Certificates      
Debt Instrument [Line Items]      
Interest rate 4.23%    
IH 2018-4 | Mortgage Loans      
Debt Instrument [Line Items]      
Extension term 1 year    
Debt instrument term 2 years    
Interest rate 6.67%    
IH 2018-4 | Mortgage Loans | Each Class Certificates      
Debt Instrument [Line Items]      
Debt instrument, loan principal as a percentage of mortgage pool 5.00%    
IH 2018-4 | Mortgage Loans | Minimum      
Debt Instrument [Line Items]      
Basis spread 1.15%    
IH 2018-4 | Mortgage Loans | Minimum | Secured Overnight Financing Rate      
Debt Instrument [Line Items]      
Basis spread 1.15%    
IH 2018-4 | Mortgage Loans | Maximum      
Debt Instrument [Line Items]      
Number of extensions | extension 5    
Basis spread 1.45%    
IH 2018-4 | Mortgage Loans | Maximum | Secured Overnight Financing Rate      
Debt Instrument [Line Items]      
Basis spread 1.45%