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Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) Contract | Jun. 30, 2019 USD ($) Contract | Jun. 30, 2020 USD ($) Contract | Jun. 30, 2019 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 96 | 91 | 200 | 136
Recorded Investment | $ 15,652,000 | $ 9,225,000 | $ 52,348,000 | $ 16,732,000
Net charge-offs | $ 0 | $ 0 | $ 0 | $ 0
Total commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 47 | 25 | 88 | 40
Recorded Investment | $ 5,390,000 | $ 4,014,000 | $ 12,588,000 | $ 7,645,000
Total commercial and industrial | Commercial, financial and agricultural |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 40 | 21 | 76 | 34
Recorded Investment | $ 3,503,000 | $ 2,932,000 | $ 9,237,000 | $ 5,614,000
Total commercial and industrial | Owner-occupied |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 7 | 4 | 12 | 6
Recorded Investment | $ 1,887,000 | $ 1,082,000 | $ 3,351,000 | $ 2,031,000
Total commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 7 | 7 | 16 | 14
Recorded Investment | $ 6,308,000 | $ 863,000 | $ 30,994,000 | $ 2,139,000
Total commercial real estate | Investment properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 2 | 1 | 4 | 2
Recorded Investment | $ 5,599,000 | $ 180,000 | $ 28,669,000 | $ 663,000
Total commercial real estate | 1-4 family properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 4 | 4 | 10 | 10
Recorded Investment | $ 618,000 | $ 514,000 | $ 1,784,000 | $ 1,307,000
Total commercial real estate | Land and development |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 1 | 2 | 2 | 2
Recorded Investment | $ 91,000 | $ 169,000 | $ 541,000 | $ 169,000
Total consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 42 | 59 | 96 | 82
Recorded Investment | $ 3,954,000 | $ 4,348,000 | $ 8,766,000 | $ 6,948,000
Total consumer | Consumer mortgages |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 10 | 1 | 16 | 5
Recorded Investment | $ 2,038,000 | $ 109,000 | $ 3,638,000 | $ 1,451,000
Total consumer | Home equity lines |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 14 | 24 | 33 | 25
Recorded Investment | $ 1,099,000 | $ 2,321,000 | $ 2,337,000 | $ 2,426,000
Total consumer | Other consumer loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 18 | 34 | 47 | 52
Recorded Investment | $ 817,000 | $ 1,918,000 | $ 2,791,000 | $ 3,071,000
Below Market Interest Rate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 8,471,000 | 6,304,000 | 38,674,000 | 10,548,000
Below Market Interest Rate | Total commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 1,956,000 | 2,425,000 | 7,047,000 | 5,157,000
Below Market Interest Rate | Total commercial and industrial | Commercial, financial and agricultural |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 1,503,000 | 1,343,000 | 5,226,000 | 3,126,000
Below Market Interest Rate | Total commercial and industrial | Owner-occupied |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 453,000 | 1,082,000 | 1,821,000 | 2,031,000
Below Market Interest Rate | Total commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 5,759,000 | 863,000 | 30,003,000 | 2,139,000
Below Market Interest Rate | Total commercial real estate | Investment properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 5,599,000 | 180,000 | 28,669,000 | 663,000
Below Market Interest Rate | Total commercial real estate | 1-4 family properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 69,000 | 514,000 | 793,000 | 1,307,000
Below Market Interest Rate | Total commercial real estate | Land and development |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 91,000 | 169,000 | 541,000 | 169,000
Below Market Interest Rate | Total consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 756,000 | 3,016,000 | 1,624,000 | 3,252,000
Below Market Interest Rate | Total consumer | Consumer mortgages |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 556,000 | 109,000 | 1,072,000 | 237,000
Below Market Interest Rate | Total consumer | Home equity lines |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 181,000 | 2,321,000 | 455,000 | 2,321,000
Below Market Interest Rate | Total consumer | Other consumer loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 19,000 | 586,000 | 97,000 | 694,000
Other Concessions |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 7,181,000 | 2,921,000 | 13,674,000 | 6,184,000
Other Concessions | Total commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 3,434,000 | 1,589,000 | 5,541,000 | 2,488,000
Other Concessions | Total commercial and industrial | Commercial, financial and agricultural |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 2,000,000 | 1,589,000 | 4,011,000 | 2,488,000
Other Concessions | Total commercial and industrial | Owner-occupied |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 1,434,000 | 0 | 1,530,000 | 0
Other Concessions | Total commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 549,000 | 0 | 991,000 | 0
Other Concessions | Total commercial real estate | Investment properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 0 | 0 | 0 | 0
Other Concessions | Total commercial real estate | 1-4 family properties |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 549,000 | 0 | 991,000 | 0
Other Concessions | Total commercial real estate | Land and development |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 0 | 0 | 0 | 0
Other Concessions | Total consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 3,198,000 | 1,332,000 | 7,142,000 | 3,696,000
Other Concessions | Total consumer | Consumer mortgages |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 1,482,000 | 0 | 2,566,000 | 1,214,000
Other Concessions | Total consumer | Home equity lines |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | 918,000 | 0 | 1,882,000 | 105,000
Other Concessions | Total consumer | Other consumer loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Recorded Investment | $ 798,000 | $ 1,332,000 | $ 2,694,000 | $ 2,377,000

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