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Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) Contract | Sep. 30, 2020 USD ($) Contract | Sep. 30, 2021 USD ($) Contract | Sep. 30, 2020 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 92 | 80 | 290 | 280
Recorded investment | $ 15,229,000 | $ 8,144,000 | $ 37,504,000 | $ 60,492,000
Net charge-offs | $ 0 | $ 0 | $ 0 | $ 0
Total commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 54 | 49 | 122 | 137
Recorded investment | $ 9,036,000 | $ 5,758,000 | $ 20,583,000 | $ 18,346,000
Total commercial and industrial | Commercial, financial and agricultural |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 44 | 42 | 102 | 118
Recorded investment | $ 6,079,000 | $ 4,005,000 | $ 14,819,000 | $ 13,243,000
Total commercial and industrial | Owner-occupied |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 10 | 7 | 20 | 19
Recorded investment | $ 2,957,000 | $ 1,753,000 | $ 5,764,000 | $ 5,103,000
Total commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 7 | 8 | 22 | 24
Recorded investment | $ 1,374,000 | $ 615,000 | $ 4,846,000 | $ 31,609,000
Total commercial real estate | Investment properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 2 | 2 | 8 | 6
Recorded investment | $ 637,000 | $ 387,000 | $ 3,040,000 | $ 29,056,000
Total commercial real estate | 1-4 family properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 3 | 5 | 10 | 15
Recorded investment | $ 84,000 | $ 188,000 | $ 744,000 | $ 1,972,000
Total commercial real estate | Land and development |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 2 | 1 | 4 | 3
Recorded investment | $ 653,000 | $ 40,000 | $ 1,062,000 | $ 581,000
Total consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 31 | 23 | 146 | 119
Recorded investment | $ 4,819,000 | $ 1,771,000 | $ 12,075,000 | $ 10,537,000
Total consumer | Consumer mortgages |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 8 | 3 | 10 | 19
Recorded investment | $ 1,644,000 | $ 519,000 | $ 1,975,000 | $ 4,157,000
Total consumer | Home equity lines |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 16 | 17 | 43 | 50
Recorded investment | $ 2,655,000 | $ 1,119,000 | $ 4,400,000 | $ 3,456,000
Total consumer | Other consumer loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 7 | 3 | 93 | 50
Recorded investment | $ 520,000 | $ 133,000 | $ 5,700,000 | $ 2,924,000
Below Market Interest Rate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 11,064,000 | 6,511,000 | 24,001,000 | 45,185,000
Below Market Interest Rate | Total commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 5,925,000 | 5,088,000 | 13,337,000 | 12,135,000
Below Market Interest Rate | Total commercial and industrial | Commercial, financial and agricultural |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 3,437,000 | 3,335,000 | 8,440,000 | 8,562,000
Below Market Interest Rate | Total commercial and industrial | Owner-occupied |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 2,488,000 | 1,753,000 | 4,897,000 | 3,573,000
Below Market Interest Rate | Total commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 1,273,000 | 408,000 | 4,664,000 | 30,411,000
Below Market Interest Rate | Total commercial real estate | Investment properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 637,000 | 294,000 | 3,040,000 | 28,963,000
Below Market Interest Rate | Total commercial real estate | 1-4 family properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 0 | 74,000 | 621,000 | 867,000
Below Market Interest Rate | Total commercial real estate | Land and development |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 636,000 | 40,000 | 1,003,000 | 581,000
Below Market Interest Rate | Total consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 3,866,000 | 1,015,000 | 6,000,000 | 2,639,000
Below Market Interest Rate | Total consumer | Consumer mortgages |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 1,167,000 | 496,000 | 1,498,000 | 1,568,000
Below Market Interest Rate | Total consumer | Home equity lines |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 2,655,000 | 471,000 | 4,142,000 | 926,000
Below Market Interest Rate | Total consumer | Other consumer loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 44,000 | 48,000 | 360,000 | 145,000
Other Concessions |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 4,165,000 | 1,633,000 | 13,503,000 | 15,307,000
Other Concessions | Total commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 3,111,000 | 670,000 | 7,246,000 | 6,211,000
Other Concessions | Total commercial and industrial | Commercial, financial and agricultural |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 2,642,000 | 670,000 | 6,379,000 | 4,681,000
Other Concessions | Total commercial and industrial | Owner-occupied |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 469,000 | 0 | 867,000 | 1,530,000
Other Concessions | Total commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 101,000 | 207,000 | 182,000 | 1,198,000
Other Concessions | Total commercial real estate | Investment properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 0 | 93,000 | 0 | 93,000
Other Concessions | Total commercial real estate | 1-4 family properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 84,000 | 114,000 | 123,000 | 1,105,000
Other Concessions | Total commercial real estate | Land and development |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 17,000 | 0 | 59,000 | 0
Other Concessions | Total consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 953,000 | 756,000 | 6,075,000 | 7,898,000
Other Concessions | Total consumer | Consumer mortgages |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 477,000 | 23,000 | 477,000 | 2,589,000
Other Concessions | Total consumer | Home equity lines |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 0 | 648,000 | 258,000 | 2,530,000
Other Concessions | Total consumer | Other consumer loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | 476,000 | 85,000 | 5,340,000 | 2,779,000
Principal Forgiveness |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded investment | $ 0 | $ 0 | $ 0 | $ 0

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