Quarterly report pursuant to Section 13 or 15(d)

Reverse Mortgage Loans Held for Investment, Subject to HMBS Related Obligations, at Fair Value - Schedule of Reverse Mortgage Loans Held for Investment Subject to HMBS Related Obligations, Fair Value (Detail)

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Reverse Mortgage Loans Held for Investment, Subject to HMBS Related Obligations, at Fair Value - Schedule of Reverse Mortgage Loans Held for Investment Subject to HMBS Related Obligations, Fair Value (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Reverse Mortgage Loans Held For Investment Subject To HMBS Related Obligations, Fair Value [Line Items]    
Reverse mortgage loans held for investment, subject to HMBS related obligations - UPB $ 9,406,924 $ 9,045,104
Fair value adjustments 909,103 884,059
Total reverse mortgage loans held for investment, subject to HMBS related obligations, at fair value $ 10,316,027 $ 9,929,163