LOANS HELD FOR INVESTMENT - Performance of Loans Modified During Period (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	$ 4,143	$ 37,965
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		291
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		52
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		15
Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		358
Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		37,607
Residential Portfolio Segment [Member] | Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	401	1,536
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		71
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		71
Residential Portfolio Segment [Member] | Conventional Loan [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		1,465
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	192	377
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		377
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	2,225	32,395
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		32,395
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	0	0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Automobile Loan [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	741	1,898
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		22
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		22
Automobile Loan [Member] | Consumer Portfolio Segment [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		1,876
Personal Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	154	297
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		15
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		15
Personal Loans [Member] | Consumer Portfolio Segment [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		282
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	368	1,033
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		149
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		35
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		0
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		184
Credit Card Receivables [Member] | Consumer Portfolio Segment [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		849
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period	$ 62	429
Other Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		34
Other Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		17
Other Loans [Member] | Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		15
Other Loans [Member] | Consumer Portfolio Segment [Member] | Total Delinquency [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		66
Other Loans [Member] | Consumer Portfolio Segment [Member] | Current [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Excluding Accrued Interest Modified Period		$ 363