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v3.25.3

Loans and Allowance for Credit Losses - Modified Payment Status (Detail) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | $ 27,518 | $ 15,698
Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 10,746 | 15,332
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 286 | 88
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 99
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 16,486 | 179
Residential real estate [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 1,610 | 1,821
Residential real estate [Member] | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 1,034 | 1,455
Residential real estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 286 | 88
Residential real estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 99
Residential real estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 290 | 179
Residential real estate [Member] | Senior Lien |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 1,428 | 1,624
Residential real estate [Member] | Senior Lien | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 852 | 1,258
Residential real estate [Member] | Senior Lien | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 286 | 88
Residential real estate [Member] | Senior Lien | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 99
Residential real estate [Member] | Senior Lien | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 290 | 179
Residential real estate [Member] | Junior Lien |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 182 | 197
Residential real estate [Member] | Junior Lien | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 182 | 197
Residential real estate [Member] | Junior Lien | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Residential real estate [Member] | Junior Lien | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Residential real estate [Member] | Junior Lien | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial, financial, agricultural and other [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 16,324 | 3,871
Commercial, financial, agricultural and other [Member] | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 128 | 3,871
Commercial, financial, agricultural and other [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial, financial, agricultural and other [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial, financial, agricultural and other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 16,196 | 0
Commercial, financial, agricultural and other [Member] | Equipment Finance |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 309 |
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 128 |
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 |
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 |
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 181 |
Commercial, financial, agricultural and other [Member] | Time and Demand Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 16,015 | 3,871
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 3,871
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 16,015 | 0
Commercial Real Estate [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 9,408 | 9,796
Commercial Real Estate [Member] | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 9,408 | 9,796
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 9,673
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 9,673
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Commercial Real Estate [Member] | Nonowner Occupied Commercial Real Estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 9,408 | 123
Commercial Real Estate [Member] | Nonowner Occupied Commercial Real Estate | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 9,408 | 123
Commercial Real Estate [Member] | Nonowner Occupied Commercial Real Estate | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial Real Estate [Member] | Nonowner Occupied Commercial Real Estate | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Commercial Real Estate [Member] | Nonowner Occupied Commercial Real Estate | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Loans to individuals [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 30
Loans to individuals [Member] | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 30
Loans to individuals [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Loans to individuals [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Loans to individuals [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Loans to individuals [Member] | Automobile Loan |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 30
Loans to individuals [Member] | Automobile Loan | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 30
Loans to individuals [Member] | Automobile Loan | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Loans to individuals [Member] | Automobile Loan | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Loans to individuals [Member] | Automobile Loan | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 |  | 0
Real estate construction [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 176 | 180
Real estate construction [Member] | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 176 | 180
Real estate construction [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Real estate construction [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Real estate construction [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Real estate construction [Member] | Construction Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 176 | 180
Real estate construction [Member] | Construction Other | Financial Asset, Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 176 | 180
Real estate construction [Member] | Construction Other | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Real estate construction [Member] | Construction Other | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | 0 | 0
Real estate construction [Member] | Construction Other | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | $ 0 | $ 0

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