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LOANS HELD FOR INVESTMENT - Collateral Dependent Loans Individually Evaluated For Purposes of Determining the ACL (Detail) - Collateral Pledged [Member] - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]    
Amortized Cost with ACL $ 45,192 $ 39,350
Related Specific Allowance 2,743 3,443
Amortized Cost no ACL 49,830 48,419
Amortized Cost 95,022 87,769
Residential Portfolio Segment [Member] | Conventional Loan [Member]    
Loans and Leases Receivable Disclosure [Line Items]    
Amortized Cost with ACL 23,450 25,355
Related Specific Allowance 1,040 1,732
Amortized Cost no ACL 0 0
Amortized Cost 23,450 25,355
Commercial Portfolio Segment [Member] | Construction Loans [Member]    
Loans and Leases Receivable Disclosure [Line Items]    
Amortized Cost with ACL 3,224 0
Related Specific Allowance 230 0
Amortized Cost no ACL 956 956
Amortized Cost 4,180 956
Commercial Portfolio Segment [Member] | Mortgage loans [Member]    
Loans and Leases Receivable Disclosure [Line Items]    
Amortized Cost with ACL 5,019 4,454
Related Specific Allowance 133 135
Amortized Cost no ACL 42,347 40,683
Amortized Cost 47,366 45,137
Commercial Portfolio Segment [Member] | Commercial and Industrial loans [Member]    
Loans and Leases Receivable Disclosure [Line Items]    
Amortized Cost with ACL 13,348 9,390
Related Specific Allowance 1,330 1,563
Amortized Cost no ACL 6,527 6,780
Amortized Cost 19,875 16,170
Consumer Portfolio Segment [Member] | Personal Loans [Member]    
Loans and Leases Receivable Disclosure [Line Items]    
Amortized Cost with ACL 28 28
Related Specific Allowance 1 1
Amortized Cost no ACL 0 0
Amortized Cost 28 28
Consumer Portfolio Segment [Member] | Other Loans [Member]    
Loans and Leases Receivable Disclosure [Line Items]    
Amortized Cost with ACL 123 123
Related Specific Allowance 9 12
Amortized Cost no ACL 0 0
Amortized Cost $ 123 $ 123