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FAIR VALUE - Fair Value Measurement Inputs and Valuation Techniques (Details)	Sep. 30, 2025 $ / loan	Dec. 31, 2024 $ / loan
Minimum | Discount rate | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.037	0.041
Minimum | Prepayment rate | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.058	0.054
Minimum | Cost to service (per loan) | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	73	73
Minimum | Interest rate lock commitments | Pull-through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, measurement input	0.069	0.001
Maximum | Discount rate | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.181	0.175
Maximum | Prepayment rate | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.140	0.167
Maximum | Cost to service (per loan) | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	132	129
Maximum | Interest rate lock commitments | Pull-through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, measurement input	0.999	0.999
Weighted Average | Discount rate | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.068	0.065
Weighted Average | Prepayment rate | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.090	0.081
Weighted Average | Cost to service (per loan) | Servicing Rights, net
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	99	96
Weighted Average | Interest rate lock commitments | Pull-through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, measurement input	0.789	0.752

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