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LOANS HELD FOR INVESTMENT - Financial Effects of the Permanent Modifications Granted to Borrowers Experiencing Financial Difficulty (Details) - Permanent Modification [Member] | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Weighted-Average Term Extension (in months) | 108 months |  | 73 months | 69 months
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 1.80%
Weighted-Average Term Extension (in months) |  |  |  | 106 months
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Weighted-Average Term Extension (in months) |  | 208 months |  | 208 months
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Weighted-Average Term Extension (in months) |  |  |  | 96 months
Change in Amortization Term |  |  | 36 months |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 14.50% | 0.00% | 13.82%
Weighted-Average Term Extension (in months) | 80 months | 178 months | 87 months | 178 months
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 3.00% | 0.50% | 3.00%
Weighted-Average Term Extension (in months) |  | 22 months | 120 months | 22 months
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Weighted-Average Term Extension (in months) | 29 months | 24 months | 27 months | 27 months
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 3.09% | 3.04% | 3.03% | 2.62%
Weighted-Average Term Extension (in months) | 21 months | 26 months | 20 months | 29 months
Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Weighted-Average Term Extension (in months) |  |  | 22 months | 25 months
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 4.59% | 3.51% | 4.57% | 3.09%
Weighted-Average Term Extension (in months) | 23 months | 10 months | 23 months | 16 months
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 15.64% | 17.48% | 15.67% | 17.21%
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00% | 0.00% | 0.00%
Weighted-Average Term Extension (in months) | 30 months | 26 months | 28 months | 25 months
Consumer Portfolio Segment [Member] | Other Loans [Member] | Combination of Reduction in Interest Rate and Extension of Maturity [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 2.30% | 3.01% | 3.04%
Weighted-Average Term Extension (in months) |  | 21 months | 22 months | 18 months

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