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Loans and Asset Quality Information - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Loans and Leases Receivable Disclosure [Line Items] |  |
Nonaccrual Loans with No Allowance | $ 12,948 |
Nonaccrual Loans with an Allowance | 21,748 |
Nonaccrual loans | 34,696 | $ 35,076
Commercial, financial, and agricultural |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Nonaccrual Loans with No Allowance | 3,947 |
Nonaccrual Loans with an Allowance | 8,205 |
Nonaccrual loans | 12,152 | 9,681
Real estate, commercial | Real estate – construction, land development & other land loans |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Nonaccrual Loans with No Allowance | 495 |
Nonaccrual Loans with an Allowance | 137 |
Nonaccrual loans | 632 | 643
Real estate, commercial | Real estate – mortgage – commercial and other |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Nonaccrual Loans with No Allowance | 7,648 |
Nonaccrual Loans with an Allowance | 8,583 |
Nonaccrual loans | 16,231 | 17,191
Real estate, mortgage | Real estate – mortgage – residential (1-4 family) first mortgages |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Nonaccrual Loans with No Allowance | 858 |
Nonaccrual Loans with an Allowance | 4,040 |
Nonaccrual loans | 4,898 | 6,048
Real estate, mortgage | Real estate – mortgage – home equity loans / lines of credit |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Nonaccrual Loans with No Allowance | 0 |
Nonaccrual Loans with an Allowance | 694 |
Nonaccrual loans | 694 | 1,333
Consumer loans |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Nonaccrual Loans with No Allowance | 0 |
Nonaccrual Loans with an Allowance | 89 |
Nonaccrual loans | $ 89 | $ 180

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