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Short-Term Debt - Outstanding Balances of Short-Term Debt by Type of Collateral Securing Debt (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) facility | Dec. 31, 2022 USD ($) facility
Short-term Debt [Line Items] |  |  |
Outstanding Balance | [1] | $ 1,476,654,000 | $ 2,029,679,000
Facilities |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 13 | 19
Outstanding Balance |  | $ 1,031,866,000 | $ 1,620,096,000
Facilities | Residential loan warehouse |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 4 | 7
Outstanding Balance |  | $ 548,334,000 | $ 703,406,000
Limit |  | $ 1,050,000,000 | $ 2,550,000,000
Weighted Average Interest Rate (as a percent) |  | 7.28% | 6.16%
Weighted Average Days Until Maturity |  | 132 days | 267 days
Facilities | Business purpose loan warehouse |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 2 | 4
Outstanding Balance |  | $ 70,424,000 | $ 680,100,000
Limit |  | $ 455,000,000 | $ 1,650,000,000
Weighted Average Interest Rate (as a percent) |  | 8.12% | 6.93%
Weighted Average Days Until Maturity |  | 259 days | 179 days
Facilities | Real estate securities repo |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 5 | 7
Outstanding Balance |  | $ 237,835,000 | $ 124,909,000
Limit |  | $ 0 | $ 0
Weighted Average Interest Rate (as a percent) |  | 6.99% | 5.22%
Weighted Average Days Until Maturity |  | 54 days | 27 days
Facilities | Residential MSR warehouse |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 1 |
Outstanding Balance |  | $ 48,470,000 |
Limit |  | $ 50,000,000 |
Weighted Average Interest Rate (as a percent) |  | 8.57% |
Weighted Average Days Until Maturity |  | 30 days |
Facilities | HEI warehouse |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 1 | 1
Outstanding Balance |  | $ 126,803,000 | $ 111,681,000
Limit |  | $ 150,000,000 | $ 150,000,000
Weighted Average Interest Rate (as a percent) |  | 9.92% | 8.54%
Weighted Average Days Until Maturity |  | 306 days | 306 days
Servicer advance financing |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 1 | 1
Outstanding Balance |  | $ 154,127,000 | $ 206,510,000
Limit |  | $ 240,000,000 | $ 290,000,000
Weighted Average Interest Rate (as a percent) |  | 7.67% | 6.67%
Weighted Average Days Until Maturity |  | 32 days | 305 days
Subordinate securities financing |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | facility |  | 1 |
Outstanding Balance |  | $ 126,506,000 |
Limit |  | $ 0 |
Weighted Average Interest Rate (as a percent) |  | 5.71% |
Weighted Average Days Until Maturity |  | 358 days |
Promissory notes |  |  |
Short-term Debt [Line Items] |  |  |
Outstanding Balance |  | $ 16,518,000 | $ 27,058,000
Weighted Average Interest Rate (as a percent) |  | 6.94% | 6.64%
Convertible notes, net |  |  |
Short-term Debt [Line Items] |  |  |
Outstanding Balance |  | $ 147,637,000 | $ 176,015,000
Weighted Average Interest Rate (as a percent) |  | 5.63% | 4.75%
Weighted Average Days Until Maturity |  | 289 days | 227 days
[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, 2023 and December 31, 2022, assets of consolidated VIEs totaled $9,639,117 and $9,257,291, respectively. At September 30, 2023 and December 31, 2022, liabilities of consolidated VIEs totaled $8,635,696 and $8,270,276, respectively. See Note 4 for further discussion.

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