LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) - TDR [Member] $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) numberofcontracts	Sep. 30, 2022 USD ($) numberofcontracts
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	47	125
Amortized Cost | $	$ 888	$ 2,444
Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	1	5
Amortized Cost | $	$ 50	$ 534
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	0
Amortized Cost | $	$ 0	$ 0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	0
Amortized Cost | $	$ 0	$ 0
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	0
Amortized Cost | $	$ 0	$ 0
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	31	75
Amortized Cost | $	$ 776	$ 1,674
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	1
Amortized Cost | $	$ 0	$ 16
Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	0
Amortized Cost | $	$ 0	$ 0
Credit Cards [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	14	39
Amortized Cost | $	$ 60	$ 201
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	1	5
Amortized Cost | $	$ 2	$ 19