LOANS HELD FOR INVESTMENT - Financial Effects of the Permanent Modifications Granted to Borrowers Experiencing Financial Difficulty (Detail) - Permanent Modification [Member]	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Residential Portfolio Segment [Member] \| Conventional 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)			69 months	105 months
Construction Loans [Member] \| Commercial Portfolio Segment [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
Mortgage loans [Member] \| Commercial Portfolio Segment [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)		13 months	96 months	13 months
Commercial and Industrial loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	14.50%	0.45%	13.82%	0.45%
Weighted-Average Term Extension (in months)	178 months		178 months	72 months
Automobile Loan [Member] \| Consumer Portfolio Segment [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)	24 months	31 months	27 months	27 months
Personal Loans [Member] \| Consumer Portfolio Segment [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)		35 months	25 months	35 months
Credit Card Receivables [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	17.48%	16.67%	17.21%	16.27%
Other Loans [Member] \| Consumer Portfolio Segment [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)	26 months	22 months	25 months	26 months
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Residential Portfolio Segment [Member] \| Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%	0.00%	1.80%	2.95%
Weighted-Average Term Extension (in months)			106 months	105 months
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Construction Loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%	0.00%	0.00%	0.00%
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Mortgage loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%	0.00%	0.00%	0.25%
Weighted-Average Term Extension (in months)				64 months
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Commercial and Industrial loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	3.00%	0.00%	3.00%	0.00%
Weighted-Average Term Extension (in months)	22 months		22 months
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Automobile Loan [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	3.04%	2.27%	2.62%	3.10%
Weighted-Average Term Extension (in months)	26 months	25 months	29 months	28 months
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Personal Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	3.51%	3.61%	3.09%	4.29%
Weighted-Average Term Extension (in months)	10 months	41 months	16 months	33 months
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Credit Card Receivables [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%	0.00%	0.00%	0.00%
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] \| Other Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	2.30%	2.00%	3.04%	1.74%
Weighted-Average Term Extension (in months)	21 months	10 months	18 months	23 months

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.

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