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Commitments and Contingencies - Schedule of Contractual Obligations (Footnotes) (Details) - USD ($) | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Jan. 12, 2024 | Mar. 10, 2022 | Mar. 16, 2020 | Feb. 26, 2020 | Nov. 28, 2018 | Nov. 06, 2018
Debt Instrument |  |  |  |  |  |  |  |
Loans held for sale, at fair value | $ 913,302,000 | $ 774,905,000 |  |  |  |  |  |
Total remaining draws on construction loans committed to fund | 2,373,629,000 |  |  |  |  |  |  |
Debt | 671,746,000 | 670,673,000 |  |  |  |  |  |
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |
Maximum revolving credit |  |  |  | $ 600,000,000.0 | $ 465,000,000.0 | $ 425,000,000.0 | $ 250,000,000.0 |
Debt | 75,000,000 | 75,000,000 |  |  |  |  |  |
Warehouse Facility |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |
Maximum revolving credit | $ 3,500,000,000 |  |  |  |  |  |  |
7.500% Senior Notes |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |
Debt instrument, variable interest rate, type flag | SOFR |  |  |  |  |  |  |
Basis spread on variable rate | 1.60% |  |  |  |  |  |  |
7.500% Senior Notes | Senior Notes |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |
Stated interest rate | 7.50% |  | 7.50% |  |  |  |  |
Debt | $ 596,746,000 | $ 595,673,000 |  |  |  |  |  |
Debt instrument face amount |  |  | $ 600,000,000.0 |  |  |  |  | $ 675,000,000.0
Interest on warehouse facility |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |
Total remaining draws on construction loans committed to fund | $ 3,167,000 |  |  |  |  |  |  |
Debt instrument, variable interest rate, type flag | SOFR |  |  |  |  |  |  |
Basis spread on variable rate | 1.30% |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |
Total remaining draws on construction loans committed to fund | $ 675,000,000 |  |  |  |  |  |  |
Long-term debt | 7.500% Senior Notes | Senior Notes |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |
Maximum revolving credit | $ 600,000,000.0 |  |  |  |  |  |  |

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