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Fair Value of Financial Instruments - Portion of Net Gains (Losses) Attributable to Level 3 Assets and Liabilities Still Held Included in Net Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Non-controlling interest in consolidated HEI entity |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 liabilities still held included in net income | $ 0 | $ (2,170) | $ 0 | $ (8,388)
Residential loan purchase commitments, net |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 liabilities still held included in net income | (1,396) | (488) | (1,396) | (527)
Point Entities |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 1,251 | 3,371 | 2,445 | 13,000
Held-for-investment at fair value | Residential loans at Redwood |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | (680) | (15,995) | (466) | (31,858)
Held-for-investment at fair value | Sequoia |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 170 | (6,222) | 2,519 | (11,203)
Held-for-investment at fair value | Freddie Mac SLST |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | (16,760) | (36,014) | (8,001) | (33,074)
Business purpose loans |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | (23,033) | (28,385) | (17,877) | (36,566)
Consolidated Agency multifamily loans | Freddie Mac K-Series |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 385 | (190) | 748 | 74
Single family rental loans | CAFL |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 10,707 | (21,828) | 1,897 | (17,780)
Trading Securities |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 1,829 | (17,501) | 3,073 | (19,884)
Available-for-sale securities |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | (71) | 0 | (99) | 0
HEIs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 7,676 | 1,549 | 11,053 | 2,701
Servicer Advance Investments |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 3,665 | (3,231) | 2,313 | (6,313)
MSRs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 1,692 | 4,248 | 1,278 | 7,644
Excess MSRs |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | 1,070 | (2,220) | 842 | (3,428)
Residential loan purchase commitments, net |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Net gains (losses) attributable to level 3 assets still held included in net income | $ 3,442 | $ 2,056 | $ 3,442 | $ 2,007

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