Quarterly report pursuant to Section 13 or 15(d)

Reverse Mortgage Portfolio Composition - Summarizes the Owned Reverse Mortgage Portfolio by Product Type (Detail)

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Reverse Mortgage Portfolio Composition - Summarizes the Owned Reverse Mortgage Portfolio by Product Type (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Schedule Of Owned Reverse Mortgage Portfolio [Line Items]    
Total owned reverse mortgage portfolio $ 17,393,310 $ 15,830,740
Fixed rate loans    
Schedule Of Owned Reverse Mortgage Portfolio [Line Items]    
Total owned reverse mortgage portfolio 5,891,343 5,384,865
Adjustable rate loans    
Schedule Of Owned Reverse Mortgage Portfolio [Line Items]    
Total owned reverse mortgage portfolio $ 11,501,967 $ 10,445,875