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Impaired Loans Averages (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 2,024	$ 2,804	$ 2,061	$ 2,911
Impaired Financing Receivable, Interest Income, Accrual Method	2	12	5	28
Commercial and Industrial Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	2	36	6	40
Impaired Financing Receivable, Interest Income, Accrual Method	0	1	0	2
Construction And Land Development Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	15	60	21	138
Impaired Financing Receivable, Interest Income, Accrual Method	0	0	0	0
Commercial Real Estate Owner Occupied Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	186	1,009	189	1,015
Impaired Financing Receivable, Interest Income, Accrual Method	2	11	5	26
Commercial Real Estate Other Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	1,821	1,699	1,845	1,718
Impaired Financing Receivable, Interest Income, Accrual Method	0	0	0	0
Commercial Real Estate Loans, Total [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	2,007	2,708	2,034	2,733
Impaired Financing Receivable, Interest Income, Accrual Method	$ 2	$ 11	$ 5	$ 26

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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