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Loans - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) modified_loan loan | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) modified_loan loan | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) loan | Jun. 30, 2024 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loans, net of unearned income | $ 1,886,037 |  | $ 1,886,037 |  | $ 1,883,470 |
Accrued interest receivable for loans | 8,800 |  | 8,800 |  | 8,800 |
Outstanding balance of high risk loans, minimum | 500 |  | 500 |  |  |
Financing receivable, excluding accrued interest, collateral-dependent | 2,200 |  | 2,200 |  | $ 1,400 |
Interest income | $ 173 | $ 55 | $ 390 | $ 265 |  |
Loan contracts restructured | modified_loan | 6 |  | 10 |  |  |
Number of loans that subsequently defaulted | loan | 0 |  | 0 |  | 0 |
Commercial real estate |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loans, net of unearned income | $ 1,208,856 |  | $ 1,208,856 |  | $ 1,221,521 |
Financing receivable, grading risk matrix, minimum threshold | $ 500 |  | $ 500 |  |  |
Financing receivable, grading risk matrix, maximum threshold |  |  |  |  |  | $ 500
Loan contracts restructured | modified_loan |  |  | 3 |  |  |
Commercial real estate | Payment Delay |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan |  |  | 1 |  |  |
Commercial real estate | Term Extension |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan | 1 |  |  |  |  |
Term extension from modification (in years) | 20 years |  |  |  |  |
Commercial real estate | Term Extension | One Year Term Extension |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan |  |  | 2 |  |  |
Term extension from modification (in years) |  |  | 1 year |  |  |
Commercial real estate | Term Extension | Twenty Year Term Extension |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan |  |  | 1 |  |  |
Term extension from modification (in years) |  |  | 20 years |  |  |
Commercial, financial & agricultural |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loans, net of unearned income | $ 242,389 |  | $ 242,389 |  | 242,756 |
Loan contracts restructured | modified_loan | 5 |  | 7 |  |  |
Commercial, financial & agricultural | Payment Delay |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan | 3 |  | 4 |  |  |
Commercial, financial & agricultural | Term Extension and Payment Delay |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan | 2 |  | 3 |  |  |
Term extension from modification (in years) | 10 years |  |  |  |  |
Commercial, financial & agricultural | Term Extension and Payment Delay | Five Year Term Extension |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan |  |  | 1 |  |  |
Term extension from modification (in years) |  |  | 5 years |  |  |
Commercial, financial & agricultural | Term Extension and Payment Delay | Ten Year Term Extension |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loan contracts restructured | modified_loan |  |  | 2 |  |  |
Term extension from modification (in years) |  |  | 10 years |  |  |
Loans Insured or Guaranteed by US Government Authorities |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loans, net of unearned income | $ 98,409 |  | $ 98,409 |  | 86,765 |
Loans Insured or Guaranteed by US Government Authorities | Commercial real estate |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loans, net of unearned income | 56,672 |  | 56,672 |  | 47,879 |
Loans Insured or Guaranteed by US Government Authorities | Commercial, financial & agricultural |  |  |  |  |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] |  |  |  |  |  |
Loans, net of unearned income | $ 31,612 |  | $ 31,612 |  | $ 26,716 |

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