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Loans (Aging Of Recorded Investment In Past Due Loans) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) contracts | Sep. 30, 2016 USD ($) contracts | Sep. 30, 2017 USD ($) contracts | Sep. 30, 2016 USD ($) contracts | Dec. 31, 2016 USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 139 |  | 115 | 325 |  | 309 |  |
Accruing loans past due 30-89 days |  | $ 22,856 |  |  | $ 22,856 |  |  | $ 26,591 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 28,240 | [1] |  | 28,240 | [1] |  | 24,050 | [2]
Total loans past due |  | 51,096 |  |  | 51,096 |  |  | 50,641 |
Total current |  | 5,331,247 |  |  | 5,331,247 |  |  | 5,236,189 |
Recorded Investment |  | 5,382,343 |  |  | 5,382,343 |  |  | 5,286,830 |
Loans past due 90 days or more and accruing |  | 2,037 |  |  | 2,037 |  |  | 2,138 |
Impaired Financing Receivable, Recorded Investment, Nonaccrual loans which are current in regards to contractual P&I payments |  | 64,400 |  |  | 64,400 |  |  | 65,900 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 4,938 |  | $ 12,422 | $ 10,765 |  | $ 18,779 |  |
Construction Real Estate Commercial [Domain] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 0 |  | 1 | 0 |  | 2 |  |
Past due nonaccrual loans and loans past due 90 days or more and accruing | [2] |  |  |  |  |  |  | 541 |
Total loans past due |  |  |  |  |  |  |  | 541 |
Total current |  | $ 139,672 |  |  | $ 139,672 |  |  | 135,200 |
Recorded Investment |  | 139,672 |  |  | 139,672 |  |  | 135,741 |
Loans past due 90 days or more and accruing |  | $ 0 |  |  | 0 |  |  | 0 |
Financing Receivable, Modifications, Recorded Investment, During Period |  |  |  | $ 947 | $ 0 |  | $ 1,144 |  |
Commercial Financial And Agricultural [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 14 |  | 12 | 25 |  | 29 |  |
Accruing loans past due 30-89 days |  | $ 70 |  |  | $ 70 |  |  | 371 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 10,527 | [1] |  | 10,527 | [1] |  | 4,113 | [2]
Total loans past due |  | 10,597 |  |  | 10,597 |  |  | 4,484 |
Total current |  | 1,019,041 |  |  | 1,019,041 |  |  | 993,693 |
Loans past due 90 days or more and accruing |  | 0 |  |  | 0 |  |  | 15 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 1,415 |  | $ 6,603 | $ 4,169 |  | $ 7,344 |  |
Construction Real Estate - Mortgage [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 0 |  | 0 | 1 |  | 0 |  |
Accruing loans past due 30-89 days |  | $ 213 |  |  | $ 213 |  |  | 559 |
Total loans past due |  | 213 |  |  | 213 |  |  | 559 |
Total current |  | 47,525 |  |  | 47,525 |  |  | 48,246 |
Recorded Investment |  | 47,738 |  |  | 47,738 |  |  | 48,805 |
Loans past due 90 days or more and accruing |  | $ 0 |  |  | 0 |  |  | 0 |
Financing Receivable, Modifications, Recorded Investment, During Period |  |  |  |  | $ 8 |  |  |  |
Construction Real Estate - Installment [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 0 |  | 0 | 0 |  | 1 |  |
Accruing loans past due 30-89 days |  | $ 11 |  |  | $ 11 |  |  | 223 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 48 | [1] |  | 48 | [1] |  | 64 | [2]
Total loans past due |  | 59 |  |  | 59 |  |  | 287 |
Total current |  | 4,161 |  |  | 4,161 |  |  | 4,633 |
Recorded Investment |  | 4,220 |  |  | 4,220 |  |  | 4,920 |
Loans past due 90 days or more and accruing |  | $ 0 |  |  | 0 |  |  | 12 |
Financing Receivable, Modifications, Recorded Investment, During Period |  |  |  |  | $ 0 |  | $ 9 |  |
Residential Real Estate - Commercial [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 10 |  | 4 | 15 |  | 7 |  |
Accruing loans past due 30-89 days |  |  |  |  |  |  |  | 330 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | $ 1,345 | [1] |  | $ 1,345 | [1] |  | 3,631 | [2]
Total loans past due |  | 1,345 |  |  | 1,345 |  |  | 3,961 |
Total current |  | 391,116 |  |  | 391,116 |  |  | 403,666 |
Recorded Investment |  | 392,461 |  |  | 392,461 |  |  | 407,627 |
Loans past due 90 days or more and accruing |  | 0 |  |  | 0 |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 498 |  | $ 225 | $ 702 |  | $ 918 |  |
Residential Real Estate - Mortgage [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 5 |  | 14 | 24 |  | 23 |  |
Accruing loans past due 30-89 days |  | $ 11,305 |  |  | $ 11,305 |  |  | 10,854 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 9,354 | [1] |  | 9,354 | [1] |  | 9,769 | [2]
Total loans past due |  | 20,659 |  |  | 20,659 |  |  | 20,623 |
Total current |  | 1,116,099 |  |  | 1,116,099 |  |  | 1,150,331 |
Recorded Investment |  | 1,136,758 |  |  | 1,136,758 |  |  | 1,170,954 |
Loans past due 90 days or more and accruing |  | 882 |  |  | 882 |  |  | 887 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 417 |  | $ 1,173 | $ 1,669 |  | $ 1,809 |  |
Residential Real Estate - HELOC [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 4 |  | 2 | 16 |  | 10 |  |
Accruing loans past due 30-89 days |  | $ 400 |  |  | $ 400 |  |  | 970 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 917 | [1] |  | 917 | [1] |  | 1,020 | [2]
Total loans past due |  | 1,317 |  |  | 1,317 |  |  | 1,990 |
Total current |  | 206,244 |  |  | 206,244 |  |  | 211,304 |
Recorded Investment |  | 207,561 |  |  | 207,561 |  |  | 213,294 |
Loans past due 90 days or more and accruing |  | 0 |  |  | 0 |  |  | 25 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 168 |  | $ 91 | 529 |  | $ 201 |  |
Residential Real Estate - Installment [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Accruing loans past due 30-89 days |  | 349 |  |  | 349 |  |  | 350 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 261 | [1] |  | 261 | [1] |  | 319 | [2]
Total loans past due |  | 610 |  |  | 610 |  |  | 669 |
Total current |  | 18,575 |  |  | 18,575 |  |  | 19,272 |
Recorded Investment |  | 19,185 |  |  | 19,185 |  |  | 19,941 |
Loans past due 90 days or more and accruing |  | 0 |  |  | 0 |  |  | 60 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 151 |  | $ 37 | 216 |  | $ 79 |  |
Commercial Financial And Agricultural [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Recorded Investment | [3] | $ 1,029,638 |  |  | $ 1,029,638 |  |  | 998,177 |
Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 3 |  | 6 | 9 |  | 10 |  |
Accruing loans past due 30-89 days |  | $ 82 |  |  | $ 82 |  |  | 355 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 3,455 | [1] |  | 3,455 | [1] |  | 2,499 | [2]
Total loans past due |  | 3,537 |  |  | 3,537 |  |  | 2,854 |
Total current |  | 1,156,589 |  |  | 1,156,589 |  |  | 1,157,010 |
Recorded Investment | [3] | 1,160,126 |  |  | 1,160,126 |  |  | 1,159,864 |
Loans past due 90 days or more and accruing |  | 0 |  |  | 0 |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 1,455 |  | $ 1,777 | $ 2,320 |  | $ 5,118 |  |
Consumer [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 99 |  | 74 | 228 |  | 223 |  |
Accruing loans past due 30-89 days |  | $ 10,426 |  |  | $ 10,426 |  |  | 12,579 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 2,333 | [1] |  | 2,333 | [1] |  | 2,094 | [2]
Total loans past due |  | 12,759 |  |  | 12,759 |  |  | 14,673 |
Total current |  | 1,228,841 |  |  | 1,228,841 |  |  | 1,109,562 |
Recorded Investment |  | 1,241,600 |  |  | 1,241,600 |  |  | 1,124,235 |
Loans past due 90 days or more and accruing |  | 1,155 |  |  | 1,155 |  |  | 1,139 |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 834 |  | $ 1,569 | 1,152 |  | $ 2,157 |  |
Leases [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Accruing loans past due 30-89 days |  | 0 |  |  | 0 |  |  | 0 |
Past due nonaccrual loans and loans past due 90 days or more and accruing |  | 0 | [1] |  | 0 | [1] |  | 0 | [2]
Total loans past due |  | 0 |  |  | 0 |  |  | 0 |
Total current |  | 3,384 |  |  | 3,384 |  |  | 3,272 |
Recorded Investment |  | $ 3,384 |  |  | $ 3,384 |  |  | $ 3,272 |
Residential Real Estate - Installment [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts, During Period | contracts |  | 4 |  | 2 | 7 |  | 4 |  |
Accruing Financing Receivable Modifications [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 2,061 |  | $ 246 | $ 3,608 |  | $ 3,214 |  |
Accruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  |  |  |  | 0 |  |  |  |
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 |  | 400 |  | 152 | 400 |  | 102 |  |
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 | 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 | 0 |  | 0 |  |
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Commercial [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 144 |  |  | 144 |  |  |  |
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 |  | 211 |  | 0 | 746 |  | 96 |  |
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 |  | 123 |  | 0 | 478 |  | 17 |  |
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 |  | 110 |  | 33 | 175 |  | 72 |  |
Accruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 974 |  |  | 1,525 |  | 2,812 |  |
Accruing Financing Receivable Modifications [Member] | Consumer [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 99 |  | 61 | 140 |  | 115 |  |
Nonaccruing Financing Receivable Modifications [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 2,877 |  | 12,176 | 7,157 |  | 15,565 |  |
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  |  |  | 947 | 0 |  | 1,144 |  |
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 |  | 1,015 |  | 6,451 | 3,769 |  | 7,242 |  |
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  |  |  |  | 8 |  |  |  |
Nonaccruing 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 |  | 9 |  |
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 |  | 354 |  | 225 | 558 |  | 918 |  |
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 |  | 206 |  | 1,173 | 923 |  | 1,713 |  |
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 |  | 45 |  | 91 | 51 |  | 184 |  |
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 41 |  | 4 | 41 |  | 7 |  |
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | 481 |  | 1,777 | 795 |  | 2,306 |  |
Nonaccruing Financing Receivable Modifications [Member] | Consumer [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment, During Period |  | $ 735 |  | $ 1,508 | $ 1,012 |  | $ 2,042 |  |
[1] | 1) Includes $2.0 million of loans past due 90 days or more and accruing. The remaining are past due nonaccrual loans.(2) Includes $64.4 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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