v3.25.4
Fair Value of Financial Instruments - Schedule of Carrying Value and Estimated Fair Value of the Company's Financial Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financial Assets:      
Cash and cash equivalents $ 210,333 $ 167,422 $ 187,107
Residential loans, carrying value 4,358,175 3,841,738  
Equity Investments, carrying value 24,711 113,492  
Equity investments 24,711 113,492  
Derivative asset, carrying value $ 722 $ 56  
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets Other assets  
Mortgage servicing rights, estimated fair value $ 20,893 $ 21,003 $ 0
Financial Liabilities:      
Repurchase agreements and warehouse facilities 6,753,417 4,012,225  
Collateralized debt obligations:      
Carrying Value 3,511,802 2,978,444  
Subordinated debentures, carrying value 45,000 45,000  
Senior unsecured notes:      
Senior unsecured notes, carrying value 360,437 159,196  
Senior unsecured notes 260,852 60,310  
Mortgages payable on real estate, carrying value 735,832    
VIE, Primary Beneficiary      
Financial Assets:      
Residential loans, carrying value 247,405 285,057  
Collateralized debt obligations:      
Carrying Value 235,226 275,200  
VIE, Primary Beneficiary | Mortgages payable on real estate      
Senior unsecured notes:      
Mortgages payable on real estate, carrying value 332,131 366,606  
Residential loan securitizations at amortized cost, net      
Collateralized debt obligations:      
Carrying Value 363,645 842,764  
Residential loan securitizations at amortized cost, net | VIE, Primary Beneficiary      
Collateralized debt obligations:      
Carrying Value 363,645 842,764  
Consolidated SLST      
Collateralized debt obligations:      
Carrying Value 3,148,157 2,135,680  
Consolidated SLST | VIE, Primary Beneficiary      
Collateralized debt obligations:      
Carrying Value 3,148,157 2,135,680  
Senior unsecured notes at amortized cost, net      
Senior unsecured notes:      
Senior unsecured notes, carrying value 99,585 98,886  
Senior unsecured notes at fair value      
Senior unsecured notes:      
Senior unsecured notes, carrying value 260,852 60,310  
Level 1      
Financial Assets:      
Cash and cash equivalents 210,333 167,422  
Cash and cash equivalents, estimated fair value 210,333 167,422  
Equity investments 0 0  
Mortgage servicing rights, estimated fair value 0 0  
Senior unsecured notes:      
Senior unsecured notes 0 0  
Level 3      
Financial Assets:      
Equity Investments, carrying value 24,711 113,492  
Equity investments 24,711 113,492  
Mortgage servicing rights, carrying value 20,893 21,003  
Mortgage servicing rights, estimated fair value 20,893 21,003  
Collateralized debt obligations:      
Subordinated debentures, carrying value 45,000 45,000  
Subordinated debentures, estimated fair value 40,526 38,918  
Senior unsecured notes:      
Senior unsecured notes 0 0  
Level 3 | Mortgages payable on real estate      
Senior unsecured notes:      
Mortgages payable on real estate, carrying value 332,131 366,606  
Mortgages payable on real estate, estimated fair value 325,301 347,915  
Level 3 | Mortgages payable on real estate | Discontinued Operations, Held-for-Sale      
Senior unsecured notes:      
Mortgages payable on real estate in disposal group held for sale, carrying value 0 93,370  
Mortgages payable on real estate in disposal group held for sale, estimated fair value 0 93,370  
Level 3 | Residential loan securitizations at amortized cost, net      
Collateralized debt obligations:      
Carrying Value 363,645 842,764  
Collateralized debt obligations, fair value 349,037 818,482  
Level 3 | Consolidated SLST | VIE, Primary Beneficiary      
Collateralized debt obligations:      
Carrying Value 1,006,919 811,591  
Collateralized debt obligations, fair value 1,006,919 811,591  
Level 3 | Total Residential loans      
Financial Assets:      
Residential loans, carrying value 4,358,175 3,841,738  
Residential loans, estimated fair value 4,358,175 3,841,738  
Level 3 | Residential loans held for sale      
Financial Assets:      
Residential loans, carrying value 80,707 0  
Residential loans, estimated fair value 80,707 0  
Level 3 | Multi-family loans, at fair value      
Financial Assets:      
Multi-family loans, carrying value 55,476 86,192  
Multi-family loans, estimated fair value 55,476 86,192  
Level 3 | IRLCs | Fair Value, Measurements, Recurring      
Financial Assets:      
Derivative asset, carrying value 691 0  
Derivative asset, estimated fair value 691 0  
Level 2      
Financial Assets:      
Investment securities available for sale: 6,904,781 3,828,544  
Equity investments 0 0  
Derivative asset, carrying value 31 56  
Derivative asset, estimated fair value 31 56  
Derivative assets in disposal group held for sale, carrying value 0 67  
Derivative assets in disposal group held for sale, estimated fair value 0 67  
Mortgage servicing rights, estimated fair value 0 0  
Senior unsecured notes:      
Senior unsecured notes 260,852 60,310  
Level 2 | Repurchase agreements      
Financial Liabilities:      
Repurchase agreements and warehouse facilities 6,753,417 4,012,225  
Level 2 | Residential loan securitizations at amortized cost, net      
Collateralized debt obligations:      
Residential loan securitizations at fair value, carrying value 2,075,962 1,253,332  
Residential loan securitizations at fair value 2,075,962 1,253,332  
Level 2 | Non-Agency RMBS re-securitization | VIE, Primary Beneficiary      
Collateralized debt obligations:      
Carrying Value 65,276 70,757  
Collateralized debt obligations, fair value 65,276 70,757  
Level 2 | Senior unsecured notes at amortized cost, net      
Senior unsecured notes:      
Senior unsecured notes, carrying value 99,585 98,886  
Senior unsecured notes 99,465 98,632  
Level 2 | Senior unsecured notes at fair value      
Senior unsecured notes:      
Senior unsecured notes, carrying value 260,852 60,310  
Senior unsecured notes $ 260,852 $ 60,310