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Mortgage Banking Activities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Changes in fair value of assets | $ 46,197 | $ (58,648) | $ 196,566
Other income, net | 12,886 | 21,204 | 12,018
Mortgage Banking Activities, Net | 67,386 | (13,659) | 235,744
Residential Consumer Mortgage Banking Activities, Net |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Other income, net | 2,873 | 5,431 | 5,418
Mortgage Banking Activities, Net | 27,782 | (21,282) | 127,151
Residential Consumer Mortgage Banking Activities, Net | Residential loans, held-for-sale at fair value |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Changes in fair value of assets | 42,976 | (131,675) | 83,733
Residential Consumer Mortgage Banking Activities, Net | Trading securities |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Changes in fair value of assets | (159) | 4,249 | (352)
Residential Consumer Mortgage Banking Activities, Net | Risk management derivatives, net |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Changes in fair value of risk management derivatives | (17,908) | 100,713 | 38,352
Business Purpose Mortgage Banking |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Other income, net | 18,314 | 39,903 | 33,760
Mortgage Banking Activities, Net | 39,604 | 7,623 | 108,593
Business Purpose Mortgage Banking | Risk management derivatives, net |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Changes in fair value of risk management derivatives | (914) | 56,731 | 2,708
Business Purpose Mortgage Banking | Single-family rental loans, held-for-sale |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Changes in fair value of assets | 16,500 | (91,690) | 63,872
Business Purpose Mortgage Banking | BPL bridge loans |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |
Changes in fair value of assets | $ 5,704 | $ 2,679 | $ 8,253

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- Definition The net income attributable to mortgage banking activities. This includes market valuations related to residential and commercial loans, Sequoia IOs, and mortgage banking derivatives, as well as realized gains or losses associated with mortgage loan sales. + References No definition available. + Details
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