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Loans (Aging Of Recorded Investment In Past Due Loans) (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) contracts | Mar. 31, 2016 USD ($) contracts | Dec. 31, 2016 USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 83 |  | 84 |  |
Accruing loans past due 30-89 days |  | $ 17,185 |  |  | $ 26,591 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 19,395 | [1] |  | 24,050 | [2]
Total loans past due |  | 36,580 |  |  | 50,641 |
Total current |  | 5,291,510 |  |  | 5,236,189 |
Recorded Investment |  | 5,328,090 |  |  | 5,286,830 |
Loans past due 90 days or more and accruing |  | 1,886 |  |  | 2,138 |
Impaired Financing Receivable, Recorded Investment, Nonaccrual loans which are current in regards to contractual P&I payments |  | 66,800 |  |  | 65,900 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 8,085 |  | $ 2,529 |  |
Construction Real Estate Commercial [Domain] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 0 |  | 0 |  |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | $ 24 | [1] |  | 541 | [2]
Total loans past due |  | 24 |  |  | 541 |
Total current |  | 112,329 |  |  | 135,200 |
Recorded Investment |  | 112,353 |  |  | 135,741 |
Loans past due 90 days or more and accruing |  | $ 0 |  |  | 0 |
Commercial Financial And Agricultural [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 6 |  | 7 |  |
Accruing loans past due 30-89 days |  | $ 541 |  |  | 371 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 2,272 | [1] |  | 4,113 | [2]
Total loans past due |  | 2,813 |  |  | 4,484 |
Total current |  | 996,462 |  |  | 993,693 |
Loans past due 90 days or more and accruing |  | 10 |  |  | 15 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 4,098 |  | $ 847 |  |
Construction Real Estate - Mortgage [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 0 |  | 0 |  |
Accruing loans past due 30-89 days |  |  |  |  | 559 |
Total loans past due |  |  |  |  | 559 |
Total current |  | $ 48,303 |  |  | 48,246 |
Recorded Investment |  | 48,303 |  |  | 48,805 |
Loans past due 90 days or more and accruing |  | $ 0 |  |  | 0 |
Construction Real Estate - Installment [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 0 |  | 0 |  |
Accruing loans past due 30-89 days |  | $ 210 |  |  | 223 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 49 | [1] |  | 64 | [2]
Total loans past due |  | 259 |  |  | 287 |
Total current |  | 4,781 |  |  | 4,633 |
Recorded Investment |  | 5,040 |  |  | 4,920 |
Loans past due 90 days or more and accruing |  | $ 0 |  |  | 12 |
Residential Real Estate - Commercial [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 3 |  | 2 |  |
Accruing loans past due 30-89 days |  | $ 170 |  |  | 330 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 2,067 | [1] |  | 3,631 | [2]
Total loans past due |  | 2,237 |  |  | 3,961 |
Total current |  | 395,350 |  |  | 403,666 |
Recorded Investment |  | 397,587 |  |  | 407,627 |
Loans past due 90 days or more and accruing |  | 0 |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 2,140 |  | $ 617 |  |
Residential Real Estate - Mortgage [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 9 |  | 5 |  |
Accruing loans past due 30-89 days |  | $ 7,566 |  |  | 10,854 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 9,391 | [1] |  | 9,769 | [2]
Total loans past due |  | 16,957 |  |  | 20,623 |
Total current |  | 1,140,832 |  |  | 1,150,331 |
Recorded Investment |  | 1,157,789 |  |  | 1,170,954 |
Loans past due 90 days or more and accruing |  | 804 |  |  | 887 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 608 |  | $ 316 |  |
Residential Real Estate - HELOC [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 3 |  | 6 |  |
Accruing loans past due 30-89 days |  | $ 632 |  |  | 970 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 1,017 | [1] |  | 1,020 | [2]
Total loans past due |  | 1,649 |  |  | 1,990 |
Total current |  | 210,482 |  |  | 211,304 |
Recorded Investment |  | 212,131 |  |  | 213,294 |
Loans past due 90 days or more and accruing |  | 26 |  |  | 25 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 206 |  | $ 186 |  |
Residential Real Estate - Installment [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Accruing loans past due 30-89 days |  | 197 |  |  | 350 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 178 | [1] |  | 319 | [2]
Total loans past due |  | 375 |  |  | 669 |
Total current |  | 18,412 |  |  | 19,272 |
Recorded Investment |  | 18,787 |  |  | 19,941 |
Loans past due 90 days or more and accruing |  | 0 |  |  | 60 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 34 |  |  |  |
Commercial Financial And Agricultural [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Recorded Investment | [3] | $ 999,275 |  |  | 998,177 |
Commercial Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 4 |  | 0 |  |
Accruing loans past due 30-89 days |  | $ 135 |  |  | 355 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 2,591 | [1] |  | 2,499 | [2]
Total loans past due |  | 2,726 |  |  | 2,854 |
Total current |  | 1,188,539 |  |  | 1,157,010 |
Recorded Investment | [3] | 1,191,265 |  |  | 1,159,864 |
Loans past due 90 days or more and accruing |  | 0 |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 379 |  |  |  |
Consumer [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 57 |  | 64 |  |
Accruing loans past due 30-89 days |  | $ 7,734 |  |  | 12,579 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 1,806 | [1] |  | 2,094 | [2]
Total loans past due |  | 9,540 |  |  | 14,673 |
Total current |  | 1,172,314 |  |  | 1,109,562 |
Recorded Investment |  | 1,181,854 |  |  | 1,124,235 |
Loans past due 90 days or more and accruing |  | 1,046 |  |  | 1,139 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 620 |  | $ 563 |  |
Leases [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Accruing loans past due 30-89 days |  | 0 |  |  | 0 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 0 | [1] |  | 0 | [2]
Total loans past due |  | 0 |  |  | 0 |
Total current |  | 3,706 |  |  | 3,272 |
Recorded Investment |  | $ 3,706 |  |  | $ 3,272 |
Residential Real Estate - Installment [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 1 |  | 0 |  |
Accruing Financing Receivable Modifications [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 3,585 |  | $ 346 |  |
Accruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 3,079 |  | 131 |  |
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 0 |  | 0 |  |
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 0 |  | 0 |  |
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 0 |  | 99 |  |
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 200 |  | 64 |  |
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 34 |  |  |  |
Accruing Financing Receivable Modifications [Member] | Consumer [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 272 |  | 52 |  |
Nonaccruing Financing Receivable Modifications [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 4,500 |  | 2,183 |  |
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 1,019 |  | 716 |  |
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Commercial [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 2,140 |  | 617 |  |
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 608 |  | 217 |  |
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 6 |  | 122 |  |
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 379 |  |  |  |
Nonaccruing Financing Receivable Modifications [Member] | Consumer [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 348 |  | $ 511 |  |
[1] | 1) Includes $1.9 million of loans past due 90 days or more and accruing. The remaining are past due nonaccrual loans.(2) Includes $66.8 million of nonaccrual loans which are current in regards to contractual principal and interest payments
[2] | 1) Includes $2.1 million of loans past due 90 days or more and accruing. The remaining are past due nonaccrual loans.(2) Includes $65.9 million of nonaccrual loans which are current in regards to contractual principal and interest payments.
[3] | Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class.

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