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Loans and Allowance for Loan Losses Loans and Allowance for Loan Losses (Change in Accounting Methodology) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses	$ 140	$ (2)	$ 248	$ (759)
Construction and Farmland
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			256
Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			51
Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			77
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			(213)
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			5
All Other Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			102
Total Excluding Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			278
Calculated Provision Based On Prior Methodology [Member] | Construction and Farmland
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			47
Calculated Provision Based On Prior Methodology [Member] | Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			(121)
Calculated Provision Based On Prior Methodology [Member] | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			(64)
Calculated Provision Based On Prior Methodology [Member] | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			(279)
Calculated Provision Based On Prior Methodology [Member] | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			(1)
Calculated Provision Based On Prior Methodology [Member] | All Other Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			92
Calculated Provision Based On Prior Methodology [Member] | Total Excluding Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			(326)
Difference [Member] | Construction and Farmland
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			209
Difference [Member] | Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			172
Difference [Member] | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			141
Difference [Member] | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			66
Difference [Member] | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			6
Difference [Member] | All Other Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			10
Difference [Member] | Total Excluding Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for (Recovery of) Loan Losses			$ 604

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Amount of expense related to estimated loss from loan and lease transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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