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Loans and Allowance for Loan and Lease Losses - Summary of Contractually Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | $ 29,767 | $ 31,525
Past Due 90 Days or More Still Accruing | 2,033 | 3,621
Nonaccrual | 25,773 | 38,030
Total Past Due | 57,573 | 73,176
Purchased Credit Impaired Loans |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 192 | 2,020
Past Due 90 Days or More Still Accruing | 122 | 104
Nonaccrual | 2,392 | 8,233
Total Past Due | 2,706 | 10,357
Commercial real estate |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 1,828 | 699
Past Due 90 Days or More Still Accruing |  | 144
Nonaccrual | 862 | 1,163
Total Past Due | 2,690 | 2,006
Construction, land development, land |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 543 | 619
Nonaccrual | 134 | 362
Total Past Due | 677 | 981
1-4 family residential properties |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 1,383 | 956
Nonaccrual | 1,695 | 1,039
Total Past Due | 3,078 | 1,995
Farmland |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 3,553 | 3,583
Past Due 90 Days or More Still Accruing |  | 141
Nonaccrual | 2,688 | 541
Total Past Due | 6,241 | 4,265
Commercial Loans |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 7,044 | 11,060
Past Due 90 Days or More Still Accruing | 65 | 1,077
Nonaccrual | 17,892 | 26,619
Total Past Due | 25,001 | 38,756
Factored receivables |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 14,477 | 11,921
Past Due 90 Days or More Still Accruing | 1,844 | 2,153
Total Past Due | 16,321 | 14,074
Consumer |  |
Accounts Notes And Loans Receivable [Line Items] |  |
30-89 Days Past Due | 747 | 667
Past Due 90 Days or More Still Accruing | 2 | 2
Nonaccrual | 110 | 73
Total Past Due | $ 859 | $ 742

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