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Loans and Allowance for Credit Losses on Loans - Schedule of Amortized Cost Basis of Collateral-Dependent Loans by Loan Portfolio Segment (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Commercial and industrial loans | $ 4,113 | $ 5,574
Construction & Secured by Farmland |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans |  | 95
Residential First Lien - Investor |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 1,063 | 1,086
Residential First Lien - Owner Occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 191 | 194
Residential Junior Liens |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 9 | 8
Commercial - Owner Occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans |  | 14
Commercial - Non-Owner Occupied & Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 2,336 | 3,625
Marine loans |  |
Financing Receivable, Past Due [Line Items] |  |
Commercial and industrial loans | 514 | 552
Real Estate Collateral [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Commercial and industrial loans | 3,599 | 5,022
Real Estate Collateral [Member] | Construction & Secured by Farmland |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans |  | 95
Real Estate Collateral [Member] | Residential First Lien - Investor |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 1,063 | 1,086
Real Estate Collateral [Member] | Residential First Lien - Owner Occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 191 | 194
Real Estate Collateral [Member] | Residential Junior Liens |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 9 | 8
Real Estate Collateral [Member] | Commercial - Owner Occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans |  | 14
Real Estate Collateral [Member] | Commercial - Non-Owner Occupied & Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Mortgage real estate loans | 2,336 | 3,625
Other Collateral [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Commercial and industrial loans | 514 | 552
Other Collateral [Member] | Marine loans |  |
Financing Receivable, Past Due [Line Items] |  |
Commercial and industrial loans | $ 514 | $ 552

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