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Fair Value of Financial Instruments - Market Valuation Adjustments, Net (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Income | $ 4,303 | $ 697
Total Market Valuation Gains (Losses), Net | (1,859) | 119,783
Mortgage Banking Activities, Net |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 1,293 | 75,562
Mortgage Banking Activities, Net | Residential loans, held-for-sale at fair value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (27,199) | 23,112
Mortgage Banking Activities, Net | Residential loan purchase commitments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (41,623) | (52,385)
Mortgage Banking Activities, Net | Single-family rental loans held-for-sale, at fair value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (24,468) | 10,248
Mortgage Banking Activities, Net | Single-family rental loan interest rate lock commitments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (725) | 0
Mortgage Banking Activities, Net | Bridge loans |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 2,135 | 1,044
Mortgage Banking Activities, Net | Trading securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 2,786 | 721
Mortgage Banking Activities, Net | Risk management derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 90,387 | 92,822
Investment Fair Value Changes, Net |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (6,120) | 45,087
Investment Fair Value Changes, Net | Trading securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (4,242) | 20,628
Investment Fair Value Changes, Net | Risk management derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 1,973 | 0
Investment Fair Value Changes, Net | Residential loans held-for-sale, at fair value (called Sequoia loans) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (4,252) | 317
Investment Fair Value Changes, Net | Bridge loans held-for-investment |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (2,143) | 3,304
Investment Fair Value Changes, Net | Servicer Advance Investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (3,081) | (160)
Investment Fair Value Changes, Net | Excess MSRs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (1,208) | (1,953)
Investment Fair Value Changes, Net | Legacy Sequoia |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (714) | (699)
Investment Fair Value Changes, Net | Sequoia |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (3,822) | 4,898
Investment Fair Value Changes, Net | Freddie Mac SLST |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 3,036 | 4,117
Investment Fair Value Changes, Net | Freddie Mac K-Series |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 264 | 8,921
Investment Fair Value Changes, Net | CAFL |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 4,048 | (286)
Investment Fair Value Changes, Net | Point Entities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 3,411 | 0
Investment Fair Value Changes, Net | HEIs at Redwood |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 1,192 | 5,315
Investment Fair Value Changes, Net | Other investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | 123 | 310
Investment Fair Value Changes, Net | Credit (losses) recoveries on AFS securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Changes in fair value of assets | (705) | 375
Other Income |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Income | 2,968 | (866)
Other Income | MSRs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other Income | $ 2,968 | $ (866)

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