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Loans and Allowance for Loan and Lease Losses - Schedule of Loans Modified as Troubled Debt Restructurings (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($) loan | Dec. 31, 2017 USD ($) loan | Dec. 31, 2016 USD ($) loan
Accounts Notes And Loans Receivable [Line Items] |  |  |
Extended Amortization Period | $ 1,241 |  | $ 18,214
Payment Deferrals | 589 |  |
Total Modifications | $ 1,830 |  | $ 18,214
Number of Loans | loan | 15 |  | 31
Commercial real estate |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Extended Amortization Period |  |  | $ 809
Payment Deferrals | $ 589 |  |
Total Modifications | $ 589 |  | $ 809
Number of Loans | loan | 2 |  | 3
1-4 family residential properties |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Extended Amortization Period | $ 103 |  |
Total Modifications | $ 103 |  |
Number of Loans | loan | 2 |  |
Farmland |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Extended Amortization Period | $ 263 |  | $ 793
Total Modifications | $ 263 |  | $ 793
Number of Loans | loan | 1 |  | 1
Commercial Loans |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Extended Amortization Period | $ 875 | $ 8,831 | $ 16,612
Total Modifications | $ 875 | $ 8,831 | $ 16,612
Number of Loans | loan | 10 | 8 | 27

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
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