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MORTGAGE BANKING OPERATIONS - Key Economic Assumptions (Details) - Single family | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Constant prepayment rate |  |
Fair Value Measurement Inputs and Valuation Techniques |  |
Servicing asset, measurement input | 19.30% | 11.20%
Discount rate |  |
Fair Value Measurement Inputs and Valuation Techniques |  |
Servicing asset, measurement input | 10.18% | 9.94%

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