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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, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | $ 70,426 | $ 80,664 | $ 73,712
Nonaccrual Loans | 87,822 | 95,887 |
Accruing Troubled Debt Restructurings | 18,228 | 25,088 |
Loans Past Due 90 Days or More and Accruing | 2,138 | 1,975 |
Total Nonperforming Loans | 108,188 | 122,950 |
Impaired Financing Receivable, Average Recorded Investment | 79,496 | 70,762 | 92,614
Impaired Financing Receivable, Interest Income, Cash Basis Method | 4,777 | 1,963 | 2,678
Commercial, financial and agricultural |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 20,624 | 30,595 | 19,106
Nonaccrual Loans | 20,057 | 21,676 |
Accruing Troubled Debt Restructurings | 600 | 8,947 |
Loans Past Due 90 Days or More and Accruing | 15 | 0 |
Total Nonperforming Loans | 20,672 | 30,623 |
Impaired Financing Receivable, Average Recorded Investment | 26,821 | 20,179 | 19,518
Impaired Financing Receivable, Interest Income, Cash Basis Method | 885 | 340 | 360
Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 24,474 | 18,025 | 21,989
Nonaccrual Loans | 19,169 | 15,268 |
Accruing Troubled Debt Restructurings | 5,305 | 2,757 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 24,474 | 18,025 |
Impaired Financing Receivable, Average Recorded Investment | 22,828 | 17,883 | 31,945
Impaired Financing Receivable, Interest Income, Cash Basis Method | 884 | 550 | 1,027
SEPH commercial land and development |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment |  | 2,044 | 2,078
Nonaccrual Loans | 0 | 2,044 |
Accruing Troubled Debt Restructurings | 0 | 0 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 0 | 2,044 |
Impaired Financing Receivable, Average Recorded Investment | 1,597 | 2,066 | 3,658
Impaired Financing Receivable, Interest Income, Cash Basis Method |  | 21 | 146
Remaining commercial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 2,226 | 4,676 | 5,609
Nonaccrual Loans | 1,833 | 4,162 |
Accruing Troubled Debt Restructurings | 393 | 514 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 2,226 | 4,676 |
Impaired Financing Receivable, Average Recorded Investment | 3,906 | 5,666 | 8,784
Impaired Financing Receivable, Interest Income, Cash Basis Method | 66 | 26 | 61
Mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 0 | 7 |
Accruing Troubled Debt Restructurings | 104 | 110 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 104 | 117 |
Installment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 61 | 64 |
Accruing Troubled Debt Restructurings | 95 | 114 |
Loans Past Due 90 Days or More and Accruing | 12 | 0 |
Total Nonperforming Loans | 168 | 178 |
Commercial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Recorded Investment | 23,102 | 25,324 | 24,930
Nonaccrual Loans | 23,013 | 25,063 |
Accruing Troubled Debt Restructurings | 89 | 261 |
Loans Past Due 90 Days or More and Accruing | 0 | 0 |
Total Nonperforming Loans | 23,102 | 25,324 |
Impaired Financing Receivable, Average Recorded Investment | 24,341 | 24,968 | 28,306
Impaired Financing Receivable, Interest Income, Cash Basis Method | 2,942 | 1,026 | 1,084
Mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 18,313 | 20,378 |
Accruing Troubled Debt Restructurings | 9,612 | 10,143 |
Loans Past Due 90 Days or More and Accruing | 887 | 851 |
Total Nonperforming Loans | 28,812 | 31,372 |
HELOC |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 1,783 | 1,749 |
Accruing Troubled Debt Restructurings | 673 | 873 |
Loans Past Due 90 Days or More and Accruing | 25 | 27 |
Total Nonperforming Loans | 2,481 | 2,649 |
Installment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 644 | 1,657 |
Accruing Troubled Debt Restructurings | 609 | 635 |
Loans Past Due 90 Days or More and Accruing | 60 | 4 |
Total Nonperforming Loans | 1,313 | 2,296 |
Consumer |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Nonaccrual Loans | 2,949 | 3,819 |
Accruing Troubled Debt Restructurings | 748 | 734 |
Loans Past Due 90 Days or More and Accruing | 1,139 | 1,093 |
Total Nonperforming Loans | 4,836 | $ 5,646 |
Impaired Financing Receivable, Average Recorded Investment | $ 3 |  | $ 403

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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 -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: 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=66008989&loc=d3e5111-111524 + Details
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