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Segment Information - Supplemental Information by Segment (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Real estate securities | [1] | $ 351,335 | $ 1,099,874
Other investments | [1] | 384,628 | 358,130
Goodwill and intangible assets | [1] | 60,737 | 161,464
Total Assets | [1] | 10,402,412 | 17,995,440
Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 4,494,936 | 7,714,850
Business purpose residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 3,956,101 | 3,506,743
Multifamily loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 491,415 | 4,408,524
Operating Segments | Residential Lending |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 146,608 | 229,074
Other investments |  | 14,878 | 42,224
Goodwill and intangible assets |  | 0 | 0
Total Assets |  | 2,148,643 | 5,410,540
Operating Segments | Residential Lending | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 1,941,489 | 4,939,745
Operating Segments | Residential Lending | Business purpose residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Residential Lending | Multifamily loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Business Purpose Lending |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 0 | 0
Other investments |  | 25,713 | 21,002
Goodwill and intangible assets |  | 60,737 | 161,464
Total Assets |  | 4,134,913 | 3,786,641
Operating Segments | Business Purpose Lending | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Business Purpose Lending | Business purpose residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 3,956,101 | 3,506,743
Operating Segments | Business Purpose Lending | Multifamily loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Third-Party Investments |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 204,727 | 870,800
Other investments |  | 344,037 | 294,904
Goodwill and intangible assets |  | 0 | 0
Total Assets |  | 3,315,039 | 8,028,946
Operating Segments | Third-Party Investments | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 2,256,682 | 2,367,215
Operating Segments | Third-Party Investments | Business purpose residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Operating Segments | Third-Party Investments | Multifamily loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 491,415 | 4,408,524
Corporate/ Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Real estate securities |  | 0 | 0
Other investments |  | 0 | 0
Goodwill and intangible assets |  | 0 | 0
Total Assets |  | 803,817 | 769,313
Corporate/ Other | Residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 296,765 | 407,890
Corporate/ Other | Business purpose residential loans |  |  |
Segment Reporting Information [Line Items] |  |  |
Loans, at fair value |  | 0 | 0
Corporate/ Other | Multifamily loans |  |  |
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 September 30, 2020 and December 31, 2019, assets of consolidated VIEs totaled $8,197,095 and $11,931,869, respectively. At September 30, 2020 and December 31, 2019, liabilities of consolidated VIEs totaled $7,238,047 and $10,717,072, respectively. See Note 4 for further discussion.

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