LOANS HELD FOR INVESTMENT - Financial Effects of the Permanent Modifications Granted to Borrowers Experiencing Financial Difficulty (Detail) - Permanent Modification [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Weighted-Average Term Extension (in months)	98 months
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
Automobile Loan [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Weighted-Average Term Extension (in months)	22 months
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Weighted-Average Term Extension (in months)	30 months
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	16.04%
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Weighted-Average Term Extension (in months)	27 months
Weighted-Average Forgiveness of Principal and/or Interest	$ 0
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 (%)	2.11%
Weighted-Average Term Extension (in months)	141 months
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Weighted-Average Interest Rate Reduction (%)	0.00%
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%
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 (%)	2.88%
Weighted-Average Term Extension (in 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 (%)	3.36%
Weighted-Average Term Extension (in months)	12 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%
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 (%)	1.96%
Weighted-Average Term Extension (in months)	26 months