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MORTGAGE BANKING OPERATIONS - Key Economic Assumptions (Details) - Single family | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Constant prepayment rate |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing asset, measurement input | 22.61% | 15.13% | 19.87% | 14.20% |
CPRs | Low |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing Asset, Measurement Input | 0.0617 |  | 0.0617 |  | 0.0680
CPRs | High |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing Asset, Measurement Input | 0.1310 |  | 0.1310 |  | 0.3250
CPRs | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing Asset, Measurement Input | 0.0747 |  | 0.0747 |  | 0.0700
Discount rate |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing asset, measurement input | 9.88% | 11.70% | 10.17% | 10.83% |
Discount rate | Low |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing Asset, Measurement Input | 0.0963 |  | 0.0963 |  | 0.1000
Discount rate | High |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing Asset, Measurement Input | 0.1509 |  | 0.1509 |  | 0.1700
Discount rate | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques |  |  |  |  |
Servicing Asset, Measurement Input | 0.1012 |  | 0.1012 |  | 0.1000

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