LOANS HELD FOR INVESTMENT - Loan Modifications are Considered TDRs (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) numberofcontracts	Dec. 31, 2021 USD ($) numberofcontracts	Dec. 31, 2020 USD ($) numberofcontracts
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 23,616	$ 34,216	$ 36,319
Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	7,100	7,594	8,307
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	4,928	9,908	22,524
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	5,890	11,223	824
Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	3,454	2,598	2,623
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	591	697	408
Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	394	504	305
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	443	266	545
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 816	$ 1,426	$ 783
TDR [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	600	612	648
Pre-modification Outstanding Recorded Investment	$ 23,829	$ 34,485	$ 37,140
Post-Modification Outstanding Recorded Investment	$ 23,616	$ 34,216	$ 36,319
TDR [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	68	66	103
Pre-modification Outstanding Recorded Investment	$ 7,165	$ 7,687	$ 9,027
Post-Modification Outstanding Recorded Investment	$ 7,100	$ 7,594	$ 8,307
TDR [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	17	6	14
Pre-modification Outstanding Recorded Investment	$ 5,156	$ 10,031	$ 22,544
Post-Modification Outstanding Recorded Investment	$ 4,928	$ 9,908	$ 22,524
TDR [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	3	7	5
Pre-modification Outstanding Recorded Investment	$ 5,897	$ 11,285	$ 824
Post-Modification Outstanding Recorded Investment	$ 5,890	$ 11,223	$ 824
TDR [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	0	0
Pre-modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
TDR [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	168	134	163
Pre-modification Outstanding Recorded Investment	$ 3,404	$ 2,601	$ 2,635
Post-Modification Outstanding Recorded Investment	$ 3,454	$ 2,598	$ 2,623
TDR [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	33	42	29
Pre-modification Outstanding Recorded Investment	$ 592	$ 692	$ 408
Post-Modification Outstanding Recorded Investment	$ 591	$ 697	$ 408
TDR [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	26	46	30
Pre-modification Outstanding Recorded Investment	$ 366	$ 497	$ 306
Post-Modification Outstanding Recorded Investment	$ 394	$ 504	$ 305
TDR [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	170	246	159
Pre-modification Outstanding Recorded Investment	$ 815	$ 1,426	$ 783
Post-Modification Outstanding Recorded Investment	$ 816	$ 1,426	$ 783
TDR [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	115	65	145
Pre-modification Outstanding Recorded Investment	$ 434	$ 266	$ 613
Post-Modification Outstanding Recorded Investment	$ 443	$ 266	$ 545