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Loans - Recorded Investment in Nonaccrual, Restructured and Loans Past Due 90 Days or More and Accruing (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | $ 80,664 | $ 73,712 | $ 112,315
Nonaccrual Loans | 95,887 | 100,393 |
Accruing Troubled Debt Restructurings | 25,088 | 16,332 |
Loans Past Due 90 Days or More and Accruing | 1,975 | 2,709 |
Total Nonperforming Loans | 122,950 | 119,434 |
Impaired Financing Receivable, Average Recorded Investment | 70,762 | 92,614 | 124,089
Impaired Financing Receivable, Interest Income, Cash Basis Method | 1,963 | 2,678 | 2,640
Commercial, financial and agricultural |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 30,595 | 19,106 | 20,727
Nonaccrual Loans | 21,676 | 18,826 |
Accruing Troubled Debt Restructurings | 8,947 | 297 |
Loans Past Due 90 Days or More and Accruing | 0 | 229 |
Total Nonperforming Loans | 30,623 | 19,352 |
Impaired Financing Receivable, Average Recorded Investment | 20,179 | 19,518 | 20,523
Impaired Financing Receivable, Interest Income, Cash Basis Method | 340 | 360 | 412
Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 18,025 | 21,989 | 41,822
Nonaccrual Loans | 15,268 | 19,299 |
Accruing Troubled Debt Restructurings | 2,757 | 2,690 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 18,025 | 21,989 |
Impaired Financing Receivable, Average Recorded Investment | 17,883 | 31,945 | 41,426
Impaired Financing Receivable, Interest Income, Cash Basis Method | 550 | 1,027 | 1,151
SEPH commercial land and development |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 2,044 | 2,078 | 4,777
Nonaccrual Loans | 2,044 | 2,078 |
Accruing Troubled Debt Restructurings | 0 | 0 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 2,044 | 2,078 |
Impaired Financing Receivable, Average Recorded Investment | 2,066 | 3,658 | 8,723
Impaired Financing Receivable, Interest Income, Cash Basis Method | 21 | 146 |
Remaining commercial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 4,676 | 5,609 | 10,782
Nonaccrual Loans | 4,162 | 5,558 |
Accruing Troubled Debt Restructurings | 514 | 51 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 4,676 | 5,609 |
Impaired Financing Receivable, Average Recorded Investment | 5,666 | 8,784 | 17,829
Impaired Financing Receivable, Interest Income, Cash Basis Method | 26 | 61 | 616
Mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 7 | 59 |
Accruing Troubled Debt Restructurings | 110 | 94 |
Loans Past Due 90 Days or More and Accruing | 0 | 9 |
Total Nonperforming Loans | 117 | 162 |
Installment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 64 | 115 |
Accruing Troubled Debt Restructurings | 114 | 125 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 178 | 240 |
Commercial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 25,324 | 24,930 | 33,408
Nonaccrual Loans | 25,063 | 24,336 |
Accruing Troubled Debt Restructurings | 261 | 594 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 25,324 | 24,930 |
Impaired Financing Receivable, Average Recorded Investment | 24,968 | 28,306 | 34,972
Impaired Financing Receivable, Interest Income, Cash Basis Method | 1,026 | 1,084 | 461
Mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 20,378 | 21,869 |
Accruing Troubled Debt Restructurings | 10,143 | 10,349 |
Loans Past Due 90 Days or More and Accruing | 851 | 1,329 |
Total Nonperforming Loans | 31,372 | 33,547 |
HELOC |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 1,749 | 1,879 |
Accruing Troubled Debt Restructurings | 873 | 630 |
Loans Past Due 90 Days or More and Accruing | 27 | 9 |
Total Nonperforming Loans | 2,649 | 2,518 |
Installment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 1,657 | 1,743 |
Accruing Troubled Debt Restructurings | 635 | 779 |
Loans Past Due 90 Days or More and Accruing | 4 | 0 |
Total Nonperforming Loans | 2,296 | 2,522 |
Consumer |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  |  | 799
Nonaccrual Loans | 3,819 | 4,631 |
Accruing Troubled Debt Restructurings | 734 | 723 |
Loans Past Due 90 Days or More and Accruing | 1,093 | 1,133 |
Total Nonperforming Loans | $ 5,646 | 6,487 |
Impaired Financing Receivable, Average Recorded Investment |  | $ 403 | $ 616

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524 + Details
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