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Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Details) - Troubled Debt Restructurings [Member] $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) contract	Jun. 30, 2017 USD ($) contract	Jun. 30, 2018 USD ($) contract	Jun. 30, 2017 USD ($) contract
Troubled debt restructuring categorized by loan classification [Abstract]
Number of contracts | contract	1	1	1	3
Pre Modification Outstanding Recorded Investment	$ 38	$ 9	$ 38	$ 2,042
Post Modification Outstanding Recorded Investment, net of related allowance	$ 38	$ 6	$ 38	$ 2,039
Commercial real estate - mortgage
Troubled debt restructuring categorized by loan classification [Abstract]
Number of contracts | contract	0	0	0	0
Pre Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post Modification Outstanding Recorded Investment, net of related allowance	$ 0	$ 0	$ 0	$ 0
Consumer real estate - mortgage
Troubled debt restructuring categorized by loan classification [Abstract]
Number of contracts | contract	1	1	1	1
Pre Modification Outstanding Recorded Investment	$ 38	$ 9	$ 38	$ 9
Post Modification Outstanding Recorded Investment, net of related allowance	$ 38	$ 6	$ 38	$ 6
Construction and land development
Troubled debt restructuring categorized by loan classification [Abstract]
Number of contracts | contract	0	0	0	0
Pre Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post Modification Outstanding Recorded Investment, net of related allowance	$ 0	$ 0	$ 0	$ 0
Commercial and industrial
Troubled debt restructuring categorized by loan classification [Abstract]
Number of contracts | contract	0	0	0	2
Pre Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 2,033
Post Modification Outstanding Recorded Investment, net of related allowance	$ 0	$ 0	$ 0	$ 2,033
Consumer and other
Troubled debt restructuring categorized by loan classification [Abstract]
Number of contracts | contract	0	0	0	0
Pre Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post Modification Outstanding Recorded Investment, net of related allowance	$ 0	$ 0	$ 0	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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