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Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | --- | ---
Assets |  |  |  |  |  |
Other investments | [1] | $ 341,637 |  | $ 343,930 |  |
Derivative assets | [1] | 78,933 |  | 14,212 |  |
Total Assets |  | 18,427,426 | [1] | 14,504,327 | [1] | $ 13,021,138
Liabilities |  |  |  |  |  |
ABS issued |  | 12,564,029 |  | 9,151,263 |  |
Derivative liabilities | [1] | 7,977 |  | 33,828 |  |
Total liabilities | [1] | 17,204,426 |  | 13,301,634 |  |
Level 3 |  |  |  |  |  |
Assets |  |  |  |  |  |
Total Assets |  |  |  | 17,531,750 |  |
Liabilities |  |  |  |  |  |
Total liabilities |  | 12,648,727 |  |  |  |
Fair Value, Measurements, Recurring |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential investor loans |  | 4,746,174 |  | 5,220,297 |  |
Consolidated Agency multifamily loans |  | 425,648 |  | 425,285 |  |
Trading |  | 128,780 |  | 40,424 |  |
Available-for-sale |  | 205,361 |  | 87,373 |  |
HEI |  | 590,080 |  | 550,436 |  |
Servicer advance investments |  | 212,446 |  | 225,345 |  |
Excess MSRs |  | 33,491 |  | 37,367 |  |
Mortgage servicing rights |  | 26,594 |  | 24,877 |  |
Strategic investments |  | 2,960 |  | 3,193 |  |
Other investments |  | 92 |  |  |  |
Derivative assets |  | 78,933 |  | 14,212 |  |
Total Assets |  | 17,607,718 |  | 13,679,446 |  |
Liabilities |  |  |  |  |  |
ABS issued |  | 12,564,029 |  | 9,151,263 |  |
Derivative liabilities |  | 7,977 |  | 33,828 |  |
HEI securitization non-controlling interest |  | 80,864 |  | 59,752 |  |
Total liabilities |  | 12,652,870 |  | 9,244,843 |  |
Fair Value, Measurements, Recurring | Level 1 |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential investor loans |  | 0 |  | 0 |  |
Consolidated Agency multifamily loans |  | 0 |  | 0 |  |
Trading |  | 0 |  | 0 |  |
Available-for-sale |  | 0 |  | 0 |  |
HEI |  | 0 |  | 0 |  |
Servicer advance investments |  | 0 |  | 0 |  |
Excess MSRs |  | 0 |  | 0 |  |
Mortgage servicing rights |  | 0 |  | 0 |  |
Strategic investments |  | 0 |  | 0 |  |
Other investments |  | 0 |  |  |  |
Derivative assets |  | 5,817 |  | 952 |  |
Total Assets |  | 5,817 |  | 952 |  |
Liabilities |  |  |  |  |  |
ABS issued |  | 0 |  | 0 |  |
Derivative liabilities |  | 4,143 |  | 30,414 |  |
HEI securitization non-controlling interest |  | 0 |  | 0 |  |
Total liabilities |  | 4,143 |  | 30,414 |  |
Fair Value, Measurements, Recurring | Level 2 |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential investor loans |  | 0 |  | 0 |  |
Consolidated Agency multifamily loans |  | 0 |  | 0 |  |
Trading |  | 0 |  | 0 |  |
Available-for-sale |  | 0 |  | 0 |  |
HEI |  | 0 |  | 0 |  |
Servicer advance investments |  | 0 |  | 0 |  |
Excess MSRs |  | 0 |  | 0 |  |
Mortgage servicing rights |  | 0 |  | 0 |  |
Strategic investments |  | 0 |  | 0 |  |
Other investments |  | 0 |  |  |  |
Derivative assets |  | 70,151 |  | 1,742 |  |
Total Assets |  | 70,151 |  | 1,742 |  |
Liabilities |  |  |  |  |  |
ABS issued |  | 0 |  | 0 |  |
Derivative liabilities |  | 0 |  | 0 |  |
HEI securitization non-controlling interest |  | 0 |  | 0 |  |
Total liabilities |  | 0 |  | 0 |  |
Fair Value, Measurements, Recurring | Level 3 |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential investor loans |  | 4,746,174 |  | 5,220,297 |  |
Consolidated Agency multifamily loans |  | 425,648 |  | 425,285 |  |
Trading |  | 128,780 |  | 40,424 |  |
Available-for-sale |  | 205,361 |  | 87,373 |  |
HEI |  | 590,080 |  | 550,436 |  |
Servicer advance investments |  | 212,446 |  | 225,345 |  |
Excess MSRs |  | 33,491 |  | 37,367 |  |
Mortgage servicing rights |  | 26,594 |  | 24,877 |  |
Strategic investments |  | 2,960 |  | 3,193 |  |
Other investments |  | 92 |  |  |  |
Derivative assets |  | 2,965 |  | 11,518 |  |
Total Assets |  | 17,531,750 |  | 13,676,752 |  |
Liabilities |  |  |  |  |  |
ABS issued |  | 12,564,029 |  | 9,151,263 |  |
Derivative liabilities |  | 3,834 |  | 3,414 |  |
HEI securitization non-controlling interest |  | 80,864 |  | 59,752 |  |
Total liabilities |  | 12,648,727 |  | 9,214,429 |  |
Fair Value, Measurements, Recurring | Residential Consumer Loans |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential consumer loans |  | 11,157,159 |  | 7,050,637 |  |
Fair Value, Measurements, Recurring | Residential Consumer Loans | Level 1 |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential consumer loans |  | 0 |  | 0 |  |
Fair Value, Measurements, Recurring | Residential Consumer Loans | Level 2 |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential consumer loans |  | 0 |  | 0 |  |
Fair Value, Measurements, Recurring | Residential Consumer Loans | Level 3 |  |  |  |  |  |
Assets |  |  |  |  |  |
Residential consumer loans |  | $ 11,157,159 |  | $ 7,050,637 |  |
[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, 2024 and December 31, 2023, assets of consolidated VIEs totaled $14,312,672 and $10,988,885, respectively. At September 30, 2024 and December 31, 2023, liabilities of consolidated VIEs totaled $13,354,497 and $10,096,308, respectively. See Note 15 for further discussion.

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