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Loans - Narrative (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) loan | Sep. 30, 2023 USD ($) modified_loan | Sep. 30, 2022 USD ($) loan | Dec. 31, 2022 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Loans | $ 1,864,971,000 |  | $ 1,864,971,000 |  | $ 1,737,106,000
Accrued interest receivable for loans | 8,500,000 |  | 8,500,000 |  | 6,800,000
Interest income | 55,000 | $ 165,000 | 265,000 | $ 380,000 |
Unfunded commitments to lend | 0 |  | 0 |  | 0
Number of loans that subsequently defaulted | loan |  | 0 |  | 0 |
Residential real estate |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Loans | 339,501,000 |  | $ 339,501,000 |  | 290,054,000
Residential real estate | Term Extension |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Number of modified loans | modified_loan |  |  | 1 |  |
Term extension from modification |  |  | 2 years |  |
Commercial, financial & agricultural |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Loans | 252,725,000 |  | $ 252,725,000 |  | 223,923,000
Commercial, financial & agricultural | Term Extension and Payment Delay |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Number of modified loans | modified_loan |  |  | 1 |  |
Term extension from modification |  |  | 2 years |  |
Loans Insured or Guaranteed by US Government Authorities |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Loans | 82,383,000 |  | $ 82,383,000 |  | 58,353,000
Loans Insured or Guaranteed by US Government Authorities | Residential real estate |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Loans | 11,757,000 |  | 11,757,000 |  | 8,036,000
Loans Insured or Guaranteed by US Government Authorities | Commercial, financial & agricultural |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |
Loans | $ 27,645,000 |  | $ 27,645,000 |  | $ 11,787,000

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