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Loans and Allowance for Loan and Lease Losses - Schedule of Nonperforming Loans (Parenthetical) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |
Nonaccrual loans | $ 32,149 | $ 38,030
Troubled Debt Restructuring |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Nonaccrual loans | $ 14,009 | $ 13,263

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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + 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 (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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