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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
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Mar. 31, 2025 | Mar. 31, 2024
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00%
Weighted-Average Term Extension (in months) | 66 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%
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00%
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%
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00%
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%
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 14.23% | 13.00%
Weighted-Average Term Extension (in months) | 120 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% | 0.00%
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00%
Weighted-Average Term Extension (in months) | 25 months | 30 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 (%) | 1.88% | 2.68%
Weighted-Average Term Extension (in months) | 16 months | 25 months
Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 8.49%
Weighted-Average Term Extension (in months) | 36 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 (%) | 3.65% | 1.79%
Weighted-Average Term Extension (in months) | 23 months | 14 months
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 16.01% | 16.55%
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%
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Weighted-Average Interest Rate Reduction (%) | 0.00% | 0.00%
Weighted-Average Term Extension (in months) | 27 months | 23 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 (%) | 3.14% | 2.81%
Weighted-Average Term Extension (in months) | 21 months | 19 months

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- Definition Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A + Details
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