Allowance for Loan Losses Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Financing Receivable Portfolio Segment [Domain]
Financing Receivable, Modifications [Line Items]
Added	$ 168	$ 168
Charged Off	(56)	(76)
Payments	(519)	(443)
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Beginning Balance	3,386	3,584
Added	0	0
Charged Off	0	0
Payments	(84)	(55)
Ending Balance	3,302	3,529
Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Beginning Balance	4,447	5,593
Added	0	80
Charged Off	(33)	(56)
Payments	(346)	(332)
Ending Balance	4,068	5,285
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Beginning Balance	732	683
Added	168	88
Charged Off	(23)	(20)
Payments	(89)	(56)
Ending Balance	$ 788	$ 695

Financing Receivable, Impaired, Troubled Debt Restructuring, Additions During Period

No definition available.

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- Definition

Financing Receivable, Impaired, Troubled Debt Restructuring, Payments During Period

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

+ Details

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