Annual report [Section 13 and 15(d), not S-K Item 405]

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
Dec. 31, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Owned reverse mortgage portfolio $ 27,342,669 $ 25,691,764
Adjustable rate loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Owned reverse mortgage portfolio 19,966,185 18,874,588
Fixed rate loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Owned reverse mortgage portfolio $ 7,376,484 $ 6,817,176