FAIR VALUE - Fair Value Measurement Inputs and Valuation Techniques (Details)	Jun. 30, 2026 $ / loan	Dec. 31, 2025 $ / loan
Minimum \| Discount rate \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.026	0.038
Minimum \| Prepayment rate \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.059	0.058
Minimum \| Cost to service (per loan) \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	72	73
Minimum \| IRLCs \| Pull-through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, measurement input	0.039	0.052
Maximum \| Discount rate \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.166	0.177
Maximum \| Prepayment rate \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.146	0.141
Maximum \| Cost to service (per loan) \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	136	132
Maximum \| IRLCs \| 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
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.065	0.069
Weighted Average \| Prepayment rate \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	0.089	0.087
Weighted Average \| Cost to service (per loan) \| Servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing right, measurement input	105	100
Weighted Average \| IRLCs \| Pull-through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, measurement input	0.792	0.783