FAIR VALUE MEASUREMENT - Schedule of Significant Unobservable Inputs (Details) - Level 3	Sep. 30, 2025	Dec. 31, 2024
Minimum | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.050	0.050
Minimum | Loss rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.055	0.058
Minimum | Prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.000	0.000
Maximum | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.150	0.150
Maximum | Loss rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.330	0.341
Maximum | Prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.450	0.400
Weighted Average | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.150	0.150
Weighted Average | Loss rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.172	0.195
Weighted Average | Prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, available-for-sale, measurement input	0.145	0.094