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Residential Whole Loans - Additional Credit Related Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2024 | Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Ratio loan- to-value (as a percent) |  |  |  |  | 80.00% |
As is value of collateral | Single-family transitional loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Unpaid Principal Balance (“UPB”) | $ 467,200 |  |  |  | $ 467,200 | $ 332,500
Settled Whole Loans | Single-family transitional loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Ratio loan- to-value (as a percent) |  |  |  |  | 74.00% |
Residential whole loan |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Gross write-offs | 5,262 | $ 379 | $ 2,292 | $ 2,567 |  |
Ratio loan- to-value (as a percent) |  |  |  |  | 64.00% |
Unpaid Principal Balance (“UPB”) | 9,658,048 |  |  |  | $ 9,658,048 |
Residential whole loan | Business purpose loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Total | 4,017,444 |  |  |  | $ 4,017,444 | $ 3,996,292
Ratio loan- to-value (as a percent) |  |  |  |  | 68.00% | 67.00%
Unpaid Principal Balance (“UPB”) | 4,124,228 |  |  |  | $ 4,124,228 | $ 4,098,044
Residential whole loan | Business purpose loans | Single-family transitional loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Gross write-offs | 81 | 416 | 1,785 | 2,003 |  |
Ratio loan- to-value (as a percent) |  |  |  |  | 67.00% | 66.00%
Unpaid Principal Balance (“UPB”) | 1,226,736 |  |  |  | $ 1,226,736 | $ 1,197,346
Residential whole loan | Non-QM loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Total | 3,995,591 |  |  |  | $ 3,995,591 | $ 3,805,577
Gross write-offs | 0 | 0 | 206 | 0 |  |
Ratio loan- to-value (as a percent) |  |  |  |  | 64.00% | 65.00%
Unpaid Principal Balance (“UPB”) | 4,183,917 |  |  |  | $ 4,183,917 | $ 3,934,798
Residential whole loan | Legacy RPL/NPL loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Total | 1,133,056 |  |  |  | $ 1,133,056 | $ 1,204,095
Gross write-offs | 170 | $ 22 | $ 301 | $ 113 |  |
Ratio loan- to-value (as a percent) |  |  |  |  | 56.00% | 59.00%
Unpaid Principal Balance (“UPB”) | 1,284,232 |  |  |  | $ 1,284,232 | $ 1,355,280
Carrying Value | Residential whole loan |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 50,944 |  |  |  | 50,944 |
2020 | 191,018 |  |  |  | 191,018 |
Prior | 1,184,938 |  |  |  | 1,184,938 |
Total | 1,426,900 |  |  |  | 1,426,900 |
Gross write-offs, 2022 |  |  |  |  | 0 |
Gross write-offs, 2021 |  |  |  |  | 13 |
Gross write-offs, 2020 |  |  |  |  | (4) |
Gross write-offs, prior |  |  |  |  | 5,632 |
Gross write-offs |  |  |  |  | 5,641 |
Carrying Value | Residential whole loan | Debt-to-Value Ratio, Less Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 49,563 |  |  |  | 49,563 |
2020 | 180,040 |  |  |  | 180,040 |
Prior | 1,120,150 |  |  |  | 1,120,150 |
Total | 1,349,753 |  |  |  | 1,349,753 |
Carrying Value | Residential whole loan | Debt-to-Value Ratio, Greater Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 1,381 |  |  |  | 1,381 |
2020 | 10,978 |  |  |  | 10,978 |
Prior | 64,788 |  |  |  | 64,788 |
Total | 77,147 |  |  |  | 77,147 |
Carrying Value | Residential whole loan | Business purpose loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 7,866 |  |  |  | 7,866 |
2020 | 21,522 |  |  |  | 21,522 |
Prior | 127,940 |  |  |  | 127,940 |
Total | 157,328 |  |  |  | 157,328 | 207,680
Gross write-offs, 2022 |  |  |  |  | 0 |
Gross write-offs, 2021 |  |  |  |  | 13 |
Gross write-offs, 2020 |  |  |  |  | (4) |
Gross write-offs, prior |  |  |  |  | 5,440 |
Gross write-offs |  |  |  |  | 5,449 |
Carrying Value | Residential whole loan | Business purpose loans | Debt-to-Value Ratio, Less Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 7,866 |  |  |  | 7,866 |
2020 | 18,446 |  |  |  | 18,446 |
Prior | 123,464 |  |  |  | 123,464 |
Total | 149,776 |  |  |  | 149,776 |
Carrying Value | Residential whole loan | Business purpose loans | Debt-to-Value Ratio, Greater Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 0 |  |  |  | 0 |
2020 | 3,076 |  |  |  | 3,076 |
Prior | 4,476 |  |  |  | 4,476 |
Total | 7,552 |  |  |  | 7,552 |
Carrying Value | Residential whole loan | Non-QM loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 43,078 |  |  |  | 43,078 |
2020 | 169,496 |  |  |  | 169,496 |
Prior | 579,172 |  |  |  | 579,172 |
Total | 791,746 |  |  |  | 791,746 | 843,884
Gross write-offs, 2022 |  |  |  |  | 0 |
Gross write-offs, 2021 |  |  |  |  | 0 |
Gross write-offs, 2020 |  |  |  |  | 0 |
Gross write-offs, prior |  |  |  |  | 0 |
Gross write-offs |  |  |  |  | 0 |
Carrying Value | Residential whole loan | Non-QM loans | Debt-to-Value Ratio, Less Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 41,697 |  |  |  | 41,697 |
2020 | 161,594 |  |  |  | 161,594 |
Prior | 575,433 |  |  |  | 575,433 |
Total | 778,724 |  |  |  | 778,724 |
Carrying Value | Residential whole loan | Non-QM loans | Debt-to-Value Ratio, Greater Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 1,381 |  |  |  | 1,381 |
2020 | 7,902 |  |  |  | 7,902 |
Prior | 3,739 |  |  |  | 3,739 |
Total | 13,022 |  |  |  | 13,022 |
Carrying Value | Residential whole loan | Legacy RPL/NPL loans |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 0 |  |  |  | 0 |
2020 | 0 |  |  |  | 0 |
Prior | 477,826 |  |  |  | 477,826 |
Total | 477,826 |  |  |  | 477,826 | $ 498,671
Gross write-offs, 2022 |  |  |  |  | 0 |
Gross write-offs, 2021 |  |  |  |  | 0 |
Gross write-offs, 2020 |  |  |  |  | 0 |
Gross write-offs, prior |  |  |  |  | 192 |
Gross write-offs |  |  |  |  | 192 |
Carrying Value | Residential whole loan | Legacy RPL/NPL loans | Debt-to-Value Ratio, Less Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 0 |  |  |  | 0 |
2020 | 0 |  |  |  | 0 |
Prior | 421,253 |  |  |  | 421,253 |
Total | 421,253 |  |  |  | 421,253 |
Carrying Value | Residential whole loan | Legacy RPL/NPL loans | Debt-to-Value Ratio, Greater Than 80 Percent |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022 | 0 |  |  |  | 0 |
2021 | 0 |  |  |  | 0 |
2020 | 0 |  |  |  | 0 |
Prior | 56,573 |  |  |  | 56,573 |
Total | $ 56,573 |  |  |  | $ 56,573 |

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