LOANS HELD FOR INVESTMENT - Selected Information on TDRs includes Recorded Investment by Loan Class and Modification Type (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
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
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	816	1,426	783
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	443	266	545
Interest rate below market [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	5,923	2,376	2,208
Interest rate below market [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	433	365	18
Interest rate below market [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	2,402	0	31
Interest rate below market [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Interest rate below market [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Interest rate below market [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	2,877	1,888	1,902
Interest rate below market [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Interest rate below market [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	99	13	38
Interest rate below market [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Interest rate below market [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	112	110	219
Maturity or term extension [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	3,044	2,376	1,523
Maturity or term extension [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	1,551	859	545
Maturity or term extension [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	300	0
Maturity or term extension [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	245	0	0
Maturity or term extension [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Maturity or term extension [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	232	433	413
Maturity or term extension [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	573	645	408
Maturity or term extension [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	171	60	74
Maturity or term extension [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Maturity or term extension [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	272	79	83
Combination of reduction in interest rateand extension of maturity [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	6,504	23,023	6,866
Combination of reduction in interest rateand extension of maturity [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	242	2,647	2,044
Combination of reduction in interest rateand extension of maturity [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	618	9,100	4,107
Combination of reduction in interest rateand extension of maturity [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	5,178	10,586	271
Combination of reduction in interest rateand extension of maturity [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Combination of reduction in interest rateand extension of maturity [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	345	277	275
Combination of reduction in interest rateand extension of maturity [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	26	0
Combination of reduction in interest rateand extension of maturity [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	105	387	145
Combination of reduction in interest rateand extension of maturity [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Combination of reduction in interest rateand extension of maturity [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	16	0	24
Forgiveness of principal and/or interest [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	868	77	219
Forgiveness of principal and/or interest [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Forgiveness of principal and/or interest [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	825	0	0
Forgiveness of principal and/or interest [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Forgiveness of principal and/or interest [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Forgiveness of principal and/or interest [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Forgiveness of principal and/or interest [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Forgiveness of principal and/or interest [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Forgiveness of principal and/or interest [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Forgiveness of principal and/or interest [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	43	77	219
Forbearance Agreement [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			18,386
Forbearance Agreement [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Forbearance Agreement [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			18,386
Forbearance Agreement [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Forbearance Agreement [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Forbearance Agreement [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Forbearance Agreement [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Forbearance Agreement [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Forbearance Agreement [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Forbearance Agreement [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			0
Other Loan Modifications [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	7,277	6,364	7,117
Other Loan Modifications [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	4,874	3,723	5,700
Other Loan Modifications [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	1,083	508	0
Other Loan Modifications [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	467	637	553
Other Loan Modifications [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Other Loan Modifications [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	33
Other Loan Modifications [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	18	26	0
Other Loan Modifications [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	19	44	48
Other Loan Modifications [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	816	1,426	783
Other Loan Modifications [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Entity Loan Modification Program [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	23,616	34,216	36,319
Entity Loan Modification Program [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	7,100	7,594	8,307
Entity Loan Modification Program [Member] | 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
Entity Loan Modification Program [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	5,890	11,223	824
Entity Loan Modification Program [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	0	0	0
Entity Loan Modification Program [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	3,454	2,598	2,623
Entity Loan Modification Program [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	591	697	408
Entity Loan Modification Program [Member] | Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	394	504	305
Entity Loan Modification Program [Member] | Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	443	266	545
Entity Loan Modification Program [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 816	$ 1,426	$ 783