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FAIR VALUE MEASUREMENTS - Fair Value and Carrying Value of Loans Held for Sale (Details) - Level 3 - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Carrying Value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | $ 782,966 | $ 1,111,107
Loans held for investment | 3,382,957 | 365,062
Total | 4,165,923 | 1,476,169
Fair Value (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held for sale | 812,658 | 1,112,746
Loans held for investment | 3,445,631 | 382,542
Total | $ 4,258,289 | $ 1,495,288

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