v3.26.1
Credit Quality - Schedule of Amortized Cost Loans and Leases Pledged As Collateral (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral $ 152,143 $ 173,232
Commercial Real Estate [Member] | Owner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 26,609 22,460
Commercial Real Estate [Member] | Nonowner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 100,429 130,377
Other Commercial [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 14,740 12,072
Residential Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 6,603 6,054
Construction & Land Development [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 3,762 2,269
Consumer [Member] | Bankcard [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Consumer [Member] | Other Consumer [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Residential Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 12,058 13,129
Residential Real Estate [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Residential Real Estate [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 4,218 6,830
Residential Real Estate [Member] | Other Commercial [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 21 0
Residential Real Estate [Member] | Residential Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 6,398 6,049
Residential Real Estate [Member] | Construction & Land Development [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 1,421 250
Residential Real Estate [Member] | Consumer [Member] | Bankcard [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Residential Real Estate [Member] | Consumer [Member] | Other Consumer [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Business Assets [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 7,020 4,005
Business Assets [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Business Assets [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Business Assets [Member] | Other Commercial [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 7,020 4,005
Business Assets [Member] | Residential Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Business Assets [Member] | Construction & Land Development [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Business Assets [Member] | Consumer [Member] | Bankcard [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Business Assets [Member] | Consumer [Member] | Other Consumer [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Land [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 2,559 849
Land [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Land [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 16 0
Land [Member] | Other Commercial [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Land [Member] | Residential Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 202 0
Land [Member] | Construction & Land Development [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 2,341 849
Land [Member] | Consumer [Member] | Bankcard [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Land [Member] | Consumer [Member] | Other Consumer [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Commercial Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 81,917 92,773
Commercial Real Estate [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 3,680 3,094
Commercial Real Estate [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 73,414 84,786
Commercial Real Estate [Member] | Other Commercial [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 4,823 4,893
Commercial Real Estate [Member] | Residential Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Commercial Real Estate [Member] | Construction & Land Development [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Commercial Real Estate [Member] | Consumer [Member] | Bankcard [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Commercial Real Estate [Member] | Consumer [Member] | Other Consumer [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Other Asset [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 48,589 62,476
Other Asset [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 22,929 19,366
Other Asset [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 22,781 38,761
Other Asset [Member] | Other Commercial [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 2,876 3,174
Other Asset [Member] | Residential Real Estate [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 3 5
Other Asset [Member] | Construction & Land Development [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 1,170
Other Asset [Member] | Consumer [Member] | Bankcard [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral 0 0
Other Asset [Member] | Consumer [Member] | Other Consumer [Member]    
Amortized Cost Collateral Dependent Loans [Line Items]    
Amortized Cost Loans and Leases Pledged As Collateral $ 0 $ 0