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Loans and Allowance for Credit Losses - Schedule of Collateral Loan (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | $ 21,904 | $ 21,570 | $ 22,044 | $ 21,937 | $ 21,980 | $ 23,744
Commercial, Financial, & Agricultural |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | 2,421 | 2,144 | 1,560 | 1,630 | 1,621 | 3,208
Real estate mortgage − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | 5,116 | 4,917 | 5,310 | 5,282 | 5,213 | 5,264
Real estate construction − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | 421 | 328 | 578 | 586 | 598 | 1,043
Real estate mortgage − commercial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | 12,127 | $ 12,392 | 12,305 | $ 12,634 | $ 12,908 | $ 10,537
Real Estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 518 |  | 519 |  |  |
Real Estate | Commercial, Financial, & Agricultural |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Real Estate | Real estate mortgage − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 453 |  |  |  |  |
Real Estate | Real estate construction − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 454 |  |  |
Real Estate | Real estate mortgage − commercial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 65 |  | 65 |  |  |
Other |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 1,812 |  | 766 |  |  |
Other | Commercial, Financial, & Agricultural |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 1,812 |  | 766 |  |  |
Other | Real estate mortgage − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Other | Real estate construction − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 0 |  |  |
Other | Real estate mortgage − commercial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Allowance Allocated |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | 639 |  | 319 |  |  |
Allowance Allocated | Commercial, Financial, & Agricultural |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | 587 |  | 125 |  |  |
Allowance Allocated | Real estate mortgage − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | 52 |  |  |  |  |
Allowance Allocated | Real estate construction − residential |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated |  |  | 194 |  |  |
Allowance Allocated | Real estate mortgage − commercial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance Allocated | $ 0 |  | $ 0 |  |  |

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