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Fair Value Measurements - Schedule of Loans HFS at Fair Value Activity and Aggregate Fair Value of HFS Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |
Fair value unrealized gains (losses) | $ 3,900 | $ 1,000 | $ 27,200 | $ 4,500 |
Fair value of loans held for investment | 1,773,052 |  | 1,773,052 |  | $ 1,762,396
Loans Held For Sale |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |
Fair value at beginning of period | 1,836,121 | 703,378 | 1,762,396 | 636,352 |
Originations | 2,033,047 | 1,654,313 | 3,735,730 | 2,918,045 |
Sales | (1,815,442) | (1,217,166) | (3,199,716) | (2,314,095) |
Principal payments | (214,534) | (101,107) | (400,955) | (169,662) |
Realized charge-offs, net of recoveries, recorded in earnings | (18,494) | (4,663) | (30,560) | (11,367) |
Fair value adjustments recorded in earnings | (47,646) | (26,587) | (93,843) | (51,105) |
Fair value at end of period | 1,773,052 | $ 1,008,168 | 1,773,052 | $ 1,008,168 |
Aggregate unpaid principal balance | 1,833,689 |  | 1,833,689 |  | 1,795,818
Cumulative fair value adjustments | (60,637) |  | (60,637) |  | (33,422)
Fair value of loans held for investment | 1,773,052 |  | 1,773,052 |  | 1,762,396
Loans Held For Sale | 90 or more days past due |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |
Aggregate unpaid principal balance | 7,048 |  | 7,048 |  | 3,931
Cumulative fair value adjustments | (5,751) |  | (5,751) |  | (3,176)
Fair value of loans held for investment | $ 1,297 |  | $ 1,297 |  | $ 755

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