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Allowance for Credit Losses, Credit Quality and Other - Presentation of TDR's on Non-Accrual Status (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) contract
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract |  | 21
Recorded Balance |  | $ 1,589
Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | $ 313 |
Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 105 |
Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 9 |
Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 29 |
Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 328 |
Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 5 |
Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 116 |
Commercial real estate loans | Non-farm/non-residential |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract |  | 2
Recorded Balance |  | $ 262
Commercial real estate loans | Non-farm/non-residential | Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Non-farm/non-residential | Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Non-farm/non-residential | Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Non-farm/non-residential | Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Non-farm/non-residential | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Non-farm/non-residential | Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Non-farm/non-residential | Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Construction/ Land Development |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract |  | 1
Recorded Balance |  | $ 177
Commercial real estate loans | Construction/ Land Development | Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Construction/ Land Development | Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Construction/ Land Development | Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Construction/ Land Development | Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Construction/ Land Development | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Construction/ Land Development | Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Construction/ Land Development | Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Agricultural | Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Agricultural | Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Agricultural | Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Agricultural | Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Agricultural | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Agricultural | Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial real estate loans | Agricultural | Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Residential Real Estate | Residential 1-4 family |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract |  | 4
Recorded Balance |  | $ 218
Residential Real Estate | Residential 1-4 family | Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 299 |
Residential Real Estate | Residential 1-4 family | Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 105 |
Residential Real Estate | Residential 1-4 family | Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 9 |
Residential Real Estate | Residential 1-4 family | Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Residential Real Estate | Residential 1-4 family | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 328 |
Residential Real Estate | Residential 1-4 family | Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Residential Real Estate | Residential 1-4 family | Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 116 |
Total real estate |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract |  | 7
Recorded Balance |  | $ 657
Total real estate | Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 299 |
Total real estate | Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 105 |
Total real estate | Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 9 |
Total real estate | Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Total real estate | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 328 |
Total real estate | Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Total real estate | Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 116 |
Consumer |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract |  | 1
Recorded Balance |  | $ 1
Consumer | Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 14 |
Consumer | Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Consumer | Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Consumer | Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 29 |
Consumer | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Consumer | Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 5 |
Consumer | Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial & Industrial |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | contract |  | 13
Recorded Balance |  | $ 931
Commercial & Industrial | Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial & Industrial | Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial & Industrial | Principal Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial & Industrial | Interest Forgiveness |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial & Industrial | Extended Maturity and Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial & Industrial | Principal and Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | 0 |
Commercial & Industrial | Term Extension and Principal Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Recorded Balance | $ 0 |

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