LOANS HELD FOR INVESTMENT - Financial Effects of the Permanent Modifications Granted to Borrowers Experiencing Financial Difficulty (Details) - Permanent Modification [Member]	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
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)	103 months	93 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 (%)	1.80%	2.95%
Weighted-Average Term Extension (in months)	106 months	105 months
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%	0.00%
Weighted-Average Term Extension (in months)	83 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%
Commercial Portfolio Segment [Member] \| Commercial Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%	0.00%
Weighted-Average Term Extension (in months)	36 months	13 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 (%)	0.50%	0.25%
Weighted-Average Term Extension (in months)	88 months	64 months
Commercial Portfolio Segment [Member] \| Commercial and Industrial Loans [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	15.25%	0.45%
Weighted-Average Term Extension (in months)	18 months	72 months
Change in Amortization Term	38 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 (%)	3.00%	0.00%
Weighted-Average Term Extension (in months)	9 months
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)	27 months	23 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 (%)	2.74%	2.95%
Weighted-Average Term Extension (in months)	27 months	24 months
Consumer Portfolio Segment [Member] \| Personal Loans [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%	0.00%
Weighted-Average Term Extension (in months)	25 months	36 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 (%)	4.01%	4.57%
Weighted-Average Term Extension (in months)	16 months	29 months
Consumer Portfolio Segment [Member] \| Credit Card Receivables [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	16.77%	16.09%
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)	26 months	26 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 (%)	3.00%	1.60%
Weighted-Average Term Extension (in months)	20 months	22 months

Change in amortization term of financing receivable modified for debtor experiencing financial difficulty.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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-Topic 310
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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

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- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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