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Loans And Allowance For Loan Losses - Troubled Debt Restructurings (Details) | 12 Months Ended
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Dec. 31, 2021 USD ($) Contract | Dec. 31, 2020 USD ($) Contract | Dec. 31, 2019 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 382 | 352 | 380
Total loans | $ 48,932,000 | $ 76,615,000 | $ 49,859,000
Write-down | $ 0 | $ 0 | $ 0
Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 176 | 174 | 149
Total loans | $ 27,618,000 | $ 28,917,000 | $ 28,793,000
Commercial and industrial | Commercial, financial, and agricultural |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 152 | 152 | 127
Total loans | $ 20,842,000 | $ 22,851,000 | $ 18,915,000
Commercial and industrial | Owner-occupied |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 24 | 22 | 22
Total loans | $ 6,776,000 | $ 6,066,000 | $ 9,878,000
Commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 30 | 35 | 34
Total loans | $ 6,392,000 | $ 34,579,000 | $ 5,590,000
Commercial real estate | Investment properties |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 9 | 9 | 8
Total loans | $ 3,130,000 | $ 31,099,000 | $ 1,548,000
Commercial real estate | 1-4 family properties |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 13 | 22 | 18
Total loans | $ 1,254,000 | $ 2,874,000 | $ 2,825,000
Commercial real estate | Land and development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 8 | 4 | 8
Total loans | $ 2,008,000 | $ 606,000 | $ 1,217,000
Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 176 | 143 | 197
Total loans | $ 14,922,000 | $ 13,119,000 | $ 15,476,000
Consumer | Consumer mortgages |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 18 | 23 | 18
Total loans | $ 3,518,000 | $ 4,655,000 | $ 2,948,000
Consumer | Home equity lines |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 55 | 63 | 70
Total loans | $ 5,249,000 | $ 4,500,000 | $ 5,546,000
Consumer | Other consumer loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Number of Contracts | Contract | 103 | 57 | 109
Total loans | $ 6,155,000 | $ 3,964,000 | $ 6,982,000
Below Market Interest Rate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 32,801,000 | 52,550,000 | 29,299,000
Below Market Interest Rate | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 18,654,000 | 15,475,000 | 18,059,000
Below Market Interest Rate | Commercial and industrial | Commercial, financial, and agricultural |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 12,746,000 | 10,939,000 | 9,042,000
Below Market Interest Rate | Commercial and industrial | Owner-occupied |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 5,908,000 | 4,536,000 | 9,017,000
Below Market Interest Rate | Commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 6,209,000 | 32,054,000 | 4,917,000
Below Market Interest Rate | Commercial real estate | Investment properties |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 3,130,000 | 29,679,000 | 1,548,000
Below Market Interest Rate | Commercial real estate | 1-4 family properties |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 1,131,000 | 1,769,000 | 2,182,000
Below Market Interest Rate | Commercial real estate | Land and development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 1,948,000 | 606,000 | 1,187,000
Below Market Interest Rate | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 7,938,000 | 5,021,000 | 6,323,000
Below Market Interest Rate | Consumer | Consumer mortgages |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 2,512,000 | 1,866,000 | 1,587,000
Below Market Interest Rate | Consumer | Home equity lines |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 4,991,000 | 1,970,000 | 3,024,000
Below Market Interest Rate | Consumer | Other consumer loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 435,000 | 1,185,000 | 1,712,000
Other Concessions |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 16,131,000 | 24,065,000 | 20,560,000
Other Concessions | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 8,964,000 | 13,442,000 | 10,734,000
Other Concessions | Commercial and industrial | Commercial, financial, and agricultural |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 8,096,000 | 11,912,000 | 9,873,000
Other Concessions | Commercial and industrial | Owner-occupied |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 868,000 | 1,530,000 | 861,000
Other Concessions | Commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 183,000 | 2,525,000 | 673,000
Other Concessions | Commercial real estate | Investment properties |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 0 | 1,420,000 | 0
Other Concessions | Commercial real estate | 1-4 family properties |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 123,000 | 1,105,000 | 643,000
Other Concessions | Commercial real estate | Land and development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 60,000 | 0 | 30,000
Other Concessions | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 6,984,000 | 8,098,000 | 9,153,000
Other Concessions | Consumer | Consumer mortgages |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 1,006,000 | 2,789,000 | 1,361,000
Other Concessions | Consumer | Home equity lines |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 258,000 | 2,530,000 | 2,522,000
Other Concessions | Consumer | Other consumer loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | 5,720,000 | 2,779,000 | 5,270,000
Principal Forgiveness |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Total loans | $ 0 | $ 0 | $ 0

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