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Residential Whole Loans - LTV on Loans (Details) - 90 or more $ in Thousands | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
--- | --- | ---
Held at Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | $ 230,903 | $ 313,153
UPB | 229,520 | 310,084
Held at Fair Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | 781,245 | 1,004,503
UPB | 800,145 | 1,080,733
Held at Fair Value | Nonperforming Financial Instruments |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | 454,443 | 571,729
UPB | $ 453,146 | $ 625,621
LTV (as a percent) | 0.802 | 0.868
Non-QM loans | Held at Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | $ 96,473 | $ 148,387
UPB | $ 94,755 | $ 144,681
LTV (as a percent) | 0.646 | 0.659
Rehabilitation loans | Held at Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | $ 103,166 | $ 136,347
UPB | $ 103,034 | $ 136,347
LTV (as a percent) | 0.676 | 0.658
Single-family rental loans | Held at Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | $ 23,524 | $ 20,388
UPB | $ 23,487 | $ 20,233
LTV (as a percent) | 0.734 | 0.727
Seasoned performing loans | Held at Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | $ 7,740 | $ 8,031
UPB | $ 8,244 | $ 8,823
LTV (as a percent) | 0.456 | 0.551
Agency eligible investor loans | Held at Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | $ 0 | $ 0
UPB | $ 0 | $ 0
LTV (as a percent) | 0 | 0
Purchased Credit Deteriorated Loans | Held at Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Value / Fair Value | $ 95,899 | $ 119,621
UPB | $ 117,479 | $ 145,028
LTV (as a percent) | 0.791 | 0.867

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