Loans and Allowance for Loan Losses (Details 7) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Summary of key information for impaired loans
Unpaid Principal Balance	$ 20,098	$ 17,086
Impaired loans	15,118	12,446
Impaired loans with related allowance for loan losses	8,304	7,990
Related allowance for loan losses	3,470	3,677
Commercial [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	14,238	12,843
Impaired loans	9,970	8,664
Impaired loans with related allowance for loan losses	5,717	5,103
Related allowance for loan losses	2,130	1,990
Commercial [Member] \| Owner occupied RE [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	2,858	2,281
Impaired loans	2,793	2,235
Impaired loans with related allowance for loan losses	454	464
Related allowance for loan losses	74	179
Commercial [Member] \| Non-owner occupied RE [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	7,304	6,827
Impaired loans	3,829	3,665
Impaired loans with related allowance for loan losses	2,269	2,646
Related allowance for loan losses	659	750
Commercial [Member] \| Business [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	4,076	3,735
Impaired loans	3,348	2,764
Impaired loans with related allowance for loan losses	2,994	1,993
Related allowance for loan losses	1,397	1,061
Commercial [Member] \| Construction [Member]
Summary of key information for impaired loans
Unpaid Principal Balance
Impaired loans
Impaired loans with related allowance for loan losses
Related allowance for loan losses
Consumer [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	5,860	4,243
Impaired loans	5,148	3,782
Impaired loans with related allowance for loan losses	2,587	2,887
Related allowance for loan losses	1,340	1,687
Consumer [Member] \| Other [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	164	171
Impaired loans	164	170
Impaired loans with related allowance for loan losses	164	170
Related allowance for loan losses	20	22
Consumer [Member] \| Real estate [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	2,946	2,062
Impaired loans	2,867	2,037
Impaired loans with related allowance for loan losses	2,203	2,037
Related allowance for loan losses	1,226	1,379
Consumer [Member] \| Home equity [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	2,750	2,010
Impaired loans	2,117	1,575
Impaired loans with related allowance for loan losses	220	680
Related allowance for loan losses	94	286
Consumer [Member] \| Construction [Member]
Summary of key information for impaired loans
Unpaid Principal Balance
Impaired loans
Impaired loans with related allowance for loan losses
Related allowance for loan losses

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- Definition

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

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