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Loans (Loans Individually Evaluated For Impairment By Class Of Loans) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | $ 70,991 |  | $ 70,991 |  | $ 66,585
Recorded investment | 61,750 | $ 73,144 | 61,750 | $ 73,144 | 56,564
Allowance for loan losses allocated | 1,396 |  | 1,396 |  | 684
Impaired Financing Receivable, Average Recorded Investment | 52,511 | 67,672 | 51,883 | 67,479 |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 386 | 437 | 807 | 1,248 |
Commercial Financial And Agricultural [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 29,943 | 28,475 | 29,943 | 28,475 |
Impaired Financing Receivable, Average Recorded Investment | 27,637 | 23,320 | 23,402 | 21,789 |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 145 | 120 | 319 | 340 |
Commercial Financial And Agricultural [Member] | Financing Receivable With No Related Allowance Recorded [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | 29,897 |  | 29,897 |  | 19,899
Recorded investment | 26,740 |  | 26,740 |  | 14,704
Allowance for loan losses allocated | 0 |  | 0 |  | 0
Commercial Financial And Agricultural [Member] | Financing Receivable With A Related Allowance Recorded [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | 5,256 |  | 5,256 |  | 5,394
Recorded investment | 3,203 |  | 3,203 |  | 3,335
Allowance for loan losses allocated | 1,366 |  | 1,366 |  | 681
Construction Real Estate Commercial [Domain] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 2,529 | 1,636 | 2,529 | 1,636 |
Impaired Financing Receivable, Average Recorded Investment | 1,510 | 1,843 | 1,451 | 1,960 |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 13 | 16 | 27 | 31 |
Construction Real Estate Commercial [Domain] | Financing Receivable With No Related Allowance Recorded [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | 5,342 |  | 5,342 |  | 2,788
Recorded investment | 2,529 |  | 2,529 |  | 1,324
Allowance for loan losses allocated | 0 |  | 0 |  | 0
Residential Real Estate - Commercial [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 2,750 | 21,235 | 2,750 | 21,235 |
Impaired Financing Receivable, Average Recorded Investment | 2,653 | 20,732 | 7,511 | 21,220 |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 27 | 61 | 58 | 406 |
Residential Real Estate - Commercial [Member] | Financing Receivable With No Related Allowance Recorded [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | 3,080 |  | 3,080 |  | 19,346
Recorded investment | 2,717 |  | 2,717 |  | 19,012
Allowance for loan losses allocated | 0 |  | 0 |  | 0
Residential Real Estate - Commercial [Member] | Financing Receivable With A Related Allowance Recorded [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | 33 |  | 33 |  | 47
Recorded investment | 33 |  | 33 |  | 47
Allowance for loan losses allocated | 3 |  | 3 |  | 1
Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 26,528 | 21,790 | 26,528 | 21,790 |
Impaired Financing Receivable, Average Recorded Investment | 20,711 | 21,768 | 19,519 | 22,504 |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 201 | 240 | 403 | 471 |
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | 25,145 |  | 25,145 |  | 18,974
Recorded investment | 24,469 |  | 24,469 |  | 18,060
Allowance for loan losses allocated | 0 |  | 0 |  | 0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Unpaid principal balance | 2,238 |  | 2,238 |  | 137
Recorded investment | 2,059 |  | 2,059 |  | 82
Allowance for loan losses allocated | $ 27 |  | $ 27 |  | $ 2
Consumer [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment |  | 8 |  | 8 |
Impaired Financing Receivable, Average Recorded Investment |  | $ 9 |  | $ 6 |

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