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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
	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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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

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