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Loans and Allowance for Loan and Lease Losses - Schedule of Nonperforming Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |  |
Nonaccrual loans |  | $ 32,149 | $ 38,030
Past Due 90 Days or More Still Accruing |  | 1,664 | 3,621
Factored receivables |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Past Due 90 Days or More Still Accruing |  | 1,454 | 2,153
Nonperforming Loans |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Nonaccrual loans | [1] | 32,149 | 38,030
Troubled debt restructurings accruing interest |  | 5,128 | 5,123
Total loans |  | 38,731 | 45,306
Nonperforming Loans | Factored receivables |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Past Due 90 Days or More Still Accruing |  | $ 1,454 | $ 2,153
[1] | Includes troubled debt restructurings of $14,009,000 and $13,263,000 at December 31, 2017 and 2016, respectively.

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