Loans and Allowance for Loan Losses (Details 7) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Summary of activity related to our allowance for loan losses
Balance, beginning of period		$ 10,713	$ 11,752	$ 10,213
Provision for loan losses	$ 1,000	950	1,625	1,950
Loan charge-offs			(499)	(1,164)
Loan recoveries			49	104
Net loan charge-offs			(450)	(1,060)
Balance, end of period	12,927	11,103	$ 12,927	$ 11,103
Net charge-offs to average loans (annualized)			0.10%	0.28%
Allowance for loan losses to gross loans			1.34%	1.37%
Allowance for loan losses to nonperforming loans			193.73%	90.30%
Commercial [Member] \| Owner occupied RE [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		1,893	$ 1,645	$ 1,880
Provision for loan losses			643	$ (299)
Loan charge-offs			$ (24)
Loan recoveries
Net loan charge-offs			$ (24)
Balance, end of period	2,264	1,581	2,264	$ 1,581
Commercial [Member] \| Non-owner occupied RE [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		2,979	2,332	2,633
Provision for loan losses			574	1,661
Loan charge-offs			(204)	$ (1,084)
Loan recoveries			6
Net loan charge-offs			(198)	$ (1,084)
Balance, end of period	2,708	3,210	2,708	3,210
Commercial [Member] \| Construction [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		401	614	397
Provision for loan losses			$ (216)	$ 29
Loan charge-offs
Loan recoveries
Net loan charge-offs
Balance, end of period	398	426	$ 398	$ 426
Commercial [Member] \| Business [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		3,383	3,625	3,329
Provision for loan losses			272	$ 207
Loan charge-offs			(218)
Loan recoveries			42	$ 103
Net loan charge-offs			(176)	103
Balance, end of period	3,721	3,639	3,721	3,639
Consumer [Member] \| Real estate [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		1,242	1,714	1,091
Provision for loan losses			263	$ 178
Loan charge-offs			$ (39)
Loan recoveries
Net loan charge-offs			$ (39)
Balance, end of period	1,938	1,269	1,938	$ 1,269
Consumer [Member] \| Home equity [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		651	1,162	644
Provision for loan losses			131	100
Loan charge-offs			(13)	(76)
Loan recoveries			1	1
Net loan charge-offs			(12)	(75)
Balance, end of period	1,281	669	1,281	669
Consumer [Member] \| Construction [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		104	236	99
Provision for loan losses			$ 36	$ 36
Loan charge-offs
Loan recoveries
Net loan charge-offs
Balance, end of period	272	135	$ 272	$ 135
Consumer [Member] \| Other [Member]
Summary of activity related to our allowance for loan losses
Balance, beginning of period		60	424	140
Provision for loan losses			(78)	38
Loan charge-offs			$ (1)	$ (4)
Loan recoveries
Net loan charge-offs			$ (1)	$ (4)
Balance, end of period	$ 345	$ 174	$ 345	$ 174

Allowance for loan and lease losses write offs net of recoveries.

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- Definition

Allowance for loan losses as a percentage of gross loans.

+ References

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- Definition

Allowance for credit losses as a percentage of nonperforming loans.

+ References

No definition available.

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- Definition

Net loan charge offs annualized as a percentage of average total loans.

+ References

No definition available.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: 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=49124121&loc=SL6953423-111524

Reference 2: 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 3: 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=56944662&loc=d3e3602-108585

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Total of recoveries of amounts due the Entity that had previously been written off as uncollectible using allowances (the valuation accounts that are netted against the cost of an asset to value it at its carrying value) and total of reestablishments of reserves (liabilities established to represent expected future costs) that had previously been utilized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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