LOANS HELD FOR INVESTMENT - Financing receivables with payment default (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	$ 55
Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	2
Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	20
Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	15
Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	18
Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Automobile Loan [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	18
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	18
Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	15
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	15
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Credit Cards [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	2
Credit Cards [Member] | Consumer Portfolio Segment [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	2
Credit Cards [Member] | Consumer Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Credit Cards [Member] | Consumer Portfolio Segment [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Credit Cards [Member] | Consumer Portfolio Segment [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Credit Cards [Member] | Consumer Portfolio Segment [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	20
Other Loans [Member] | Consumer Portfolio Segment [Member] | Interest Rate Below Market Reduction [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Other Loans [Member] | Consumer Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	20
Other Loans [Member] | Consumer Portfolio Segment [Member] | Combination Of Interest Rate Below Market Reduction And Extended Maturity [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Other Loans [Member] | Consumer Portfolio Segment [Member] | Principal And Or Interest Forgiveness [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	0
Other Loans [Member] | Consumer Portfolio Segment [Member] | Other Loan Modifications [Member]
Financing Receivable Modified Subsequent Default [Line Items]
Financing receivable that had a payment default	$ 0