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Segment Information - Supplemental Information by Segment (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Real estate securities | [1] | $ 377,411 | $ 344,125
Other investments | [1] | 641,969 | 348,175
Intangible assets | [1] | 41,561 | 56,865
Total Assets | [1] | 14,706,944 | 10,355,066
Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 7,592,432 | 4,249,051
Business Purpose Loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 4,790,989 | 4,136,353
Multifamily securities |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 473,514 | 492,221
Operating Segments | Residential Mortgage Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 4,927 | 5,279
Other investments |  | 0 | 0
Intangible assets |  | 0 | 0
Total Assets |  | 1,716,285 | 242,060
Operating Segments | Residential Mortgage Banking | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 1,673,235 | 176,641
Operating Segments | Residential Mortgage Banking | Business Purpose Loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Residential Mortgage Banking | Multifamily securities |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Business Purpose Mortgage Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 0 | 0
Other investments |  | 0 | 0
Intangible assets |  | 41,561 | 56,865
Total Assets |  | 464,967 | 328,564
Operating Segments | Business Purpose Mortgage Banking | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Business Purpose Mortgage Banking | Business Purpose Loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 347,860 | 245,394
Operating Segments | Business Purpose Mortgage Banking | Multifamily securities |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Investment Portfolio |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 372,484 | 338,846
Other investments |  | 606,267 | 343,724
Intangible assets |  | 0 | 0
Total Assets |  | 11,770,486 | 8,970,633
Operating Segments | Investment Portfolio | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 5,688,742 | 3,786,475
Operating Segments | Investment Portfolio | Business Purpose Loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 4,443,129 | 3,890,959
Operating Segments | Investment Portfolio | Multifamily securities |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 473,514 | 492,221
Corporate/ Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 0 | 0
Other investments |  | 35,702 | 4,451
Intangible assets |  | 0 | 0
Total Assets |  | 755,206 | 813,809
Corporate/ Other | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 230,455 | 285,935
Corporate/ Other | Business Purpose Loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Corporate/ Other | Multifamily securities |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | $ 0 | $ 0
[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 December 31, 2021 and 2020, assets of consolidated VIEs totaled $10,661,081 and $8,141,069, respectively. At December 31, 2021 and 2020, liabilities of consolidated VIEs totaled $9,619,347 and $7,148,414, respectively. See Note 4 for further discussion.

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