Quarterly report pursuant to Section 13 or 15(d)

Loans Held for Sale, at Fair Value - Schedule of Mortgage Loans Held For Sale, At Fair Value (Detail)

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Loans Held for Sale, at Fair Value - Schedule of Mortgage Loans Held For Sale, At Fair Value (Detail) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Fair value adjustments $ (7,867) $ (14,657)
Total loans held for sale, at fair value 23,956 173,984
Residential mortgage loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans held for sale - UPB 28,051 15,529
Commercial mortgage loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans held for sale - UPB $ 3,772 $ 173,112