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Asset-Backed Securities Issued - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2022 | Dec. 31, 2052 | May 29, 2029 | Mar. 31, 2029 | Jul. 31, 2023 | Jun. 30, 2022 | Dec. 31, 2021 | Sep. 30, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Other assets | [1] |  | $ 194,500 |  |  |  |  |  | $ 231,117 |
Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
VIE, ownership interest rate (as a percent) |  |  | 80.00% |  |  |  |  |  |  |
Variable Interest Entity, Primary Beneficiary | Point HEI |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
ABS issued, net, At amortized cost |  |  |  |  |  |  |  |  |  | $ 146,000
Variable Interest Entity, Primary Beneficiary | CoreVest |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
ABS issued, net, At amortized cost |  |  |  |  |  |  |  | $ 215,000 |  |
Variable Interest Entity, Primary Beneficiary | Freddie Mac SLST |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
ABS issued, net, At amortized cost |  | $ 210,000 |  |  |  |  |  |  |  |
2022 Asset Backed Securities Sold | CoreVest |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 215,000 |  |  |  |  |  |  |
Bridge loan |  |  | 229,000 |  |  |  |  |  |  |
Restricted cash |  |  | 19,000 |  |  |  |  |  |  |
2022 Asset Backed Securities Sold | Variable Interest Entity, Primary Beneficiary | CoreVest |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 208,000 |  |  |  |  |  |  |
Unamortized debt discount |  |  | 7,000 |  |  |  |  |  |  |
2021 Asset Backed Securities Sold | CoreVest |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 270,000 |  |  |  |  |  |  |
Bridge loan |  |  | 283,000 |  |  |  |  |  |  |
Restricted cash |  |  | 24,000 |  |  |  |  |  |  |
Other assets |  |  | 24,000 |  |  |  |  |  |  |
Total funding capacity |  |  | 300,000 |  |  |  |  |  |  |
2021 Asset Backed Securities Sold | Variable Interest Entity, Primary Beneficiary | Forecast |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument interest rate (as a percent) |  |  |  |  | 2.00% | 2.00% |  |  |  |
2021 Asset Backed Securities Sold | Variable Interest Entity, Primary Beneficiary | CoreVest |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
ABS issued, net, At amortized cost |  |  |  |  |  |  |  |  |  | $ 270,000
Debt instrument, face amount |  |  | 268,000 |  |  |  |  |  |  |
Unamortized debt discount |  |  | $ 2,000 |  |  |  |  |  |  |
Debt Instrument interest rate (as a percent) |  |  | 2.34% |  |  |  |  |  |  |
Asset-backed securities issued | CoreVest |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 485,000 |  |  |  |  |  | 270,000 |
Total funding capacity |  |  | 250,000 |  |  |  |  |  |  |
Asset-backed securities issued | Freddie Mac SLST |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 100,000 |  |  |  |  |  | $ 145,000 |
Asset-backed securities issued | Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 99,000 |  |  |  |  |  |  |
Unamortized debt discount |  |  | $ 1,000 |  |  |  |  |  |  |
Debt Instrument interest rate (as a percent) |  |  | 4.75% |  |  |  |  |  |  |
VIE, ownership interest rate (as a percent) |  | 100.00% |  |  |  |  |  |  |  |
Asset-backed securities issued | Variable Interest Entity, Primary Beneficiary | Forecast |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument interest rate (as a percent) |  |  |  | 2.00% |  |  | 7.75% |  |  |
Asset-backed securities issued | Variable Interest Entity, Primary Beneficiary | CoreVest |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument interest rate (as a percent) |  |  | 4.32% |  |  |  |  |  |  |
Asset-backed securities issued | Contractual maturities of over five years |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Contractual maturities of securities (in years) |  |  | 5 years |  |  |  |  |  |  |
[1] | Our consolidated balance sheets include assets of consolidated variable interest entities (“VIEs”) that can only be used to settle obligations of these VIEs and liabilities of consolidated VIEs for which creditors do not have recourse to Redwood Trust, Inc. or its affiliates. At September 30, 2022 and December 31, 2021, assets of consolidated VIEs totaled $9,449,163 and $10,661,081, respectively. At September 30, 2022 and December 31, 2021, liabilities of consolidated VIEs totaled $8,448,479 and $9,619,347, respectively. See Note 4 for further discussion.

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