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Residential Whole Loans - Vintage Information Regarding Residential Whole Loans (Details) - Residential whole loan - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Business purpose loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | $ 3,684,042 | $ 3,996,292
Business purpose loans | Multifamily transitional loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,058,079 | 1,168,297
Business purpose loans | Single-family rental loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,473,062 | 1,634,796
Non-QM loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 4,172,797 | 3,805,577
Legacy RPL/NPL loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 1,125,280 | 1,204,095
Other loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 55,909 | 55,779
Estimated Fair Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2024 | 1,317,940 |
2023 | 1,998,121 |
2022 | 1,670,934 |
2021 | 1,985,681 |
2020 | 9,044 |
Prior | 693,021 |
Total | 7,674,741 |
Estimated Fair Value | Business purpose loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total | 3,539,507 | 3,788,612
Estimated Fair Value | Business purpose loans | Single-family transitional loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2024 | 455,519 |
2023 | 497,487 |
2022 | 149,391 |
2021 | 24,669 |
2020 | 407 |
Prior | 46 |
Total | 1,127,519 |
Estimated Fair Value | Business purpose loans | Multifamily transitional loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2024 | 86,877 |
2023 | 518,096 |
2022 | 322,220 |
2021 | 130,886 |
2020 | 0 |
Prior | 0 |
Total | 1,058,079 | 1,168,297
Estimated Fair Value | Business purpose loans | Single-family rental loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2024 | 138,611 |
2023 | 247,698 |
2022 | 573,362 |
2021 | 385,558 |
2020 | 8,399 |
Prior | 281 |
Total | 1,353,909 | 1,462,583
Estimated Fair Value | Non-QM loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2024 | 636,933 |
2023 | 734,840 |
2022 | 625,961 |
2021 | 1,388,659 |
2020 | 238 |
Prior | 34,616 |
Total | 3,421,247 | 2,961,693
Estimated Fair Value | Legacy RPL/NPL loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2024 | 0 |
2023 | 0 |
2022 | 0 |
2021 | 0 |
2020 | 0 |
Prior | 658,078 |
Total | 658,078 | 705,424
Estimated Fair Value | Other loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2024 | 0 |
2023 | 0 |
2022 | 0 |
2021 | 55,909 |
2020 | 0 |
Prior | 0 |
Total | $ 55,909 | $ 55,779

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