Quarterly report pursuant to Section 13 or 15(d)

Loans Held for Investment, Subject to Nonrecourse Debt, at Fair Value (Details)

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Loans Held for Investment, Subject to Nonrecourse Debt, at Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Fair value adjustments $ 27,394 $ (191,457)
Total loans held for investment, subject to nonrecourse debt, at fair value 8,374,827 7,454,638
Reverse mortgage loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans held for investment, subject to nonrecourse debt - UPB 7,974,381 7,240,125
Commercial mortgage loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans held for investment, subject to nonrecourse debt - UPB $ 373,052 $ 405,970