Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Summary Of Recognized Assets And Liabilities Measured At Fair Value On A Recurring Basis (Details)

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Fair Value - Summary Of Recognized Assets And Liabilities Measured At Fair Value On A Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Assets    
Loans held for investment, at fair value $ 467,319 $ 907,998
Total loans held for sale, at fair value 23,956 173,984
Fair Value, Recurring    
Assets    
Retained bonds 42,851 46,439
Total assets 25,640,858 19,803,289
Liabilities    
HMBS related obligations 16,978,168 10,996,755
Nonrecourse debt in consolidated VIE trusts and reverse loan financing liability 7,780,197 7,175,857
Nonrecourse commercial loan financing liability 32,373 106,758
Nonrecourse MSR financing liability   60,562
Deferred purchase price liabilities 4,663 137
TRA obligation 1,005 3,781
Total liabilities 24,798,939 18,345,352
Fair Value, Recurring | Loans held for investment, subject to HMBS related obligations    
Assets    
Loans held for investment, at fair value 17,185,552 11,114,100
Fair Value, Recurring | Reverse mortgage loans, subject to recourse    
Assets    
Loans held for investment, at fair value 7,727,659 7,065,477
Fair Value, Recurring | Commercial mortgage loans    
Assets    
Loans held for investment, at fair value 185,100 389,161
Fair Value, Recurring | Reverse mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 463,125 771,724
Fair Value, Recurring | fix and flip mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 3,491 127,469
Fair Value, Recurring | Agricultural loans    
Assets    
Loans held for investment, at fair value 703 8,805
Fair Value, Recurring | Residential mortgage loans    
Assets    
Total loans held for sale, at fair value 20,564 12,123
Fair Value, Recurring | SRL    
Assets    
Total loans held for sale, at fair value 3,008 69,187
Fair Value, Recurring | Portfolio    
Assets    
Total loans held for sale, at fair value 384 43,272
Fair Value, Recurring | Fix and flip    
Assets    
Total loans held for sale, at fair value   49,402
Fair Value, Recurring | MSR    
Assets    
MSR 7,944 95,096
Fair Value, Recurring | Forward MBS and TBAs    
Assets    
Derivative assets   907
Fair Value, Recurring | Interest rate swaps and futures contracts    
Assets    
Derivative assets   771
Fair Value, Recurring | Interest rate swaps and futures contracts    
Liabilities    
Derivative liabilities   385
Fair Value, Recurring | Reverse mortgage loans    
Assets    
Purchase commitments - reverse mortgage loans   9,356
Fair Value, Recurring | LPCs    
Assets    
Purchase commitments - reverse mortgage loans 477  
Fair Value, Recurring | Warrant liability    
Liabilities    
Derivative liabilities 1,438 1,117
Fair Value, Recurring | November 2023, Home Improvement Consumer Loans    
Liabilities    
Sale commitments - home improvement loans 1,095  
Fair Value, Recurring | Level 1    
Assets    
Retained bonds 0 0
Total assets 0 771
Liabilities    
HMBS related obligations 0 0
Nonrecourse debt in consolidated VIE trusts and reverse loan financing liability 0 0
Nonrecourse commercial loan financing liability 0 0
Nonrecourse MSR financing liability   0
Deferred purchase price liabilities 0 0
TRA obligation 0 0
Total liabilities 1,438 1,502
Fair Value, Recurring | Level 1 | Loans held for investment, subject to HMBS related obligations    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 1 | Reverse mortgage loans, subject to recourse    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 1 | Commercial mortgage loans    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 1 | Reverse mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 1 | fix and flip mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 1 | Agricultural loans    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 1 | Residential mortgage loans    
Assets    
Total loans held for sale, at fair value 0 0
Fair Value, Recurring | Level 1 | SRL    
Assets    
Total loans held for sale, at fair value 0 0
Fair Value, Recurring | Level 1 | Portfolio    
Assets    
Total loans held for sale, at fair value 0 0
Fair Value, Recurring | Level 1 | Fix and flip    
Assets    
Total loans held for sale, at fair value  
Fair Value, Recurring | Level 1 | MSR    
Assets    
MSR 0 0
Fair Value, Recurring | Level 1 | Forward MBS and TBAs    
Assets    
Derivative assets   0
Fair Value, Recurring | Level 1 | Interest rate swaps and futures contracts    
Assets    
Derivative assets   771
Fair Value, Recurring | Level 1 | Interest rate swaps and futures contracts    
Liabilities    
Derivative liabilities   385
Fair Value, Recurring | Level 1 | Reverse mortgage loans    
Assets    
Purchase commitments - reverse mortgage loans   0
Fair Value, Recurring | Level 1 | LPCs    
Assets    
Purchase commitments - reverse mortgage loans 0  
Fair Value, Recurring | Level 1 | Warrant liability    
Liabilities    
Derivative liabilities 1,438 1,117
Fair Value, Recurring | Level 1 | November 2023, Home Improvement Consumer Loans    
Liabilities    
Sale commitments - home improvement loans 0  
Fair Value, Recurring | Level 2    
Assets    
Retained bonds 0 0
Total assets 21,041 13,030
Liabilities    
HMBS related obligations 0 0
Nonrecourse debt in consolidated VIE trusts and reverse loan financing liability 0 0
Nonrecourse commercial loan financing liability 0 0
Nonrecourse MSR financing liability   0
Deferred purchase price liabilities 0 0
TRA obligation 0 0
Total liabilities 0 0
Fair Value, Recurring | Level 2 | Loans held for investment, subject to HMBS related obligations    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 2 | Reverse mortgage loans, subject to recourse    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 2 | Commercial mortgage loans    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 2 | Reverse mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 2 | fix and flip mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 2 | Agricultural loans    
Assets    
Loans held for investment, at fair value 0 0
Fair Value, Recurring | Level 2 | Residential mortgage loans    
Assets    
Total loans held for sale, at fair value 20,564 12,123
Fair Value, Recurring | Level 2 | SRL    
Assets    
Total loans held for sale, at fair value 0 0
Fair Value, Recurring | Level 2 | Portfolio    
Assets    
Total loans held for sale, at fair value 0 0
Fair Value, Recurring | Level 2 | Fix and flip    
Assets    
Total loans held for sale, at fair value  
Fair Value, Recurring | Level 2 | MSR    
Assets    
MSR 0 0
Fair Value, Recurring | Level 2 | Forward MBS and TBAs    
Assets    
Derivative assets   907
Fair Value, Recurring | Level 2 | Interest rate swaps and futures contracts    
Assets    
Derivative assets   0
Fair Value, Recurring | Level 2 | Interest rate swaps and futures contracts    
Liabilities    
Derivative liabilities   0
Fair Value, Recurring | Level 2 | Reverse mortgage loans    
Assets    
Purchase commitments - reverse mortgage loans   0
Fair Value, Recurring | Level 2 | LPCs    
Assets    
Purchase commitments - reverse mortgage loans 477  
Fair Value, Recurring | Level 2 | Warrant liability    
Liabilities    
Derivative liabilities 0 0
Fair Value, Recurring | Level 2 | November 2023, Home Improvement Consumer Loans    
Liabilities    
Sale commitments - home improvement loans 0  
Fair Value, Recurring | Level 3    
Assets    
Retained bonds 42,851 46,439
Total assets 25,619,817 19,789,488
Liabilities    
HMBS related obligations 16,978,168 10,996,755
Nonrecourse debt in consolidated VIE trusts and reverse loan financing liability 7,780,197 7,175,857
Nonrecourse commercial loan financing liability 32,373 106,758
Nonrecourse MSR financing liability   60,562
Deferred purchase price liabilities 4,663 137
TRA obligation 1,005 3,781
Total liabilities 24,797,501 18,343,850
Fair Value, Recurring | Level 3 | Loans held for investment, subject to HMBS related obligations    
Assets    
Loans held for investment, at fair value 17,185,552 11,114,100
Fair Value, Recurring | Level 3 | Reverse mortgage loans, subject to recourse    
Assets    
Loans held for investment, at fair value 7,727,659 7,065,477
Fair Value, Recurring | Level 3 | Commercial mortgage loans    
Assets    
Loans held for investment, at fair value 185,100 389,161
Fair Value, Recurring | Level 3 | Reverse mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 463,125 771,724
Fair Value, Recurring | Level 3 | fix and flip mortgage loans, not subject to recourse    
Assets    
Loans held for investment, at fair value 3,491 127,469
Fair Value, Recurring | Level 3 | Agricultural loans    
Assets    
Loans held for investment, at fair value 703 8,805
Fair Value, Recurring | Level 3 | Residential mortgage loans    
Assets    
Total loans held for sale, at fair value 0 0
Fair Value, Recurring | Level 3 | SRL    
Assets    
Total loans held for sale, at fair value 3,008 69,187
Fair Value, Recurring | Level 3 | Portfolio    
Assets    
Total loans held for sale, at fair value 384 43,272
Fair Value, Recurring | Level 3 | Fix and flip    
Assets    
Total loans held for sale, at fair value   49,402
Fair Value, Recurring | Level 3 | MSR    
Assets    
MSR 7,944 95,096
Fair Value, Recurring | Level 3 | Forward MBS and TBAs    
Assets    
Derivative assets   0
Fair Value, Recurring | Level 3 | Interest rate swaps and futures contracts    
Assets    
Derivative assets   0
Fair Value, Recurring | Level 3 | Interest rate swaps and futures contracts    
Liabilities    
Derivative liabilities   0
Fair Value, Recurring | Level 3 | Reverse mortgage loans    
Assets    
Purchase commitments - reverse mortgage loans   9,356
Fair Value, Recurring | Level 3 | LPCs    
Assets    
Purchase commitments - reverse mortgage loans 0  
Fair Value, Recurring | Level 3 | Warrant liability    
Liabilities    
Derivative liabilities 0 $ 0
Fair Value, Recurring | Level 3 | November 2023, Home Improvement Consumer Loans    
Liabilities    
Sale commitments - home improvement loans $ 1,095