Allowance for Loan Loss (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	$ 5,268	$ 6,723	$ 6,919
Financing Receivable, Allowance for Credit Losses, Charge-offs	(808)	(2,020)	(4,334)
Financing Receivable, Allowance for Credit Losses, Recoveries	326	165	323
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(482)	(1,855)	(4,011)
Provision for loan losses	50	400	3,815
Financing Receivable, Allowance for Credit Losses	4,836	5,268	6,723
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	386	812	948
Financing Receivable, Allowance for Credit Losses, Charge-offs	(46)	(514)	(289)
Financing Receivable, Allowance for Credit Losses, Recoveries	71	48	54
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	25	(466)	(235)
Provision for loan losses	228	40	99
Financing Receivable, Allowance for Credit Losses	639	386	812
Construction And Land Development Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	366	1,545	1,470
Financing Receivable, Allowance for Credit Losses, Charge-offs	(235)	(39)	(231)
Financing Receivable, Allowance for Credit Losses, Recoveries	8	6	46
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(227)	(33)	(185)
Provision for loan losses	835	(1,146)	260
Financing Receivable, Allowance for Credit Losses	974	366	1,545
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	3,186	3,137	3,009
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	(262)	(3,184)
Financing Receivable, Allowance for Credit Losses, Recoveries	119	4	71
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	119	(258)	(3,113)
Provision for loan losses	(1,377)	307	3,241
Financing Receivable, Allowance for Credit Losses	1,928	3,186	3,137
Residential Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	1,114	1,126	1,363
Financing Receivable, Allowance for Credit Losses, Charge-offs	(438)	(808)	(545)
Financing Receivable, Allowance for Credit Losses, Recoveries	112	88	134
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(326)	(720)	(411)
Provision for loan losses	331	708	174
Financing Receivable, Allowance for Credit Losses	1,119	1,114	1,126
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	216	103	129
Financing Receivable, Allowance for Credit Losses, Charge-offs	(89)	(397)	(85)
Financing Receivable, Allowance for Credit Losses, Recoveries	16	19	18
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(73)	(378)	(67)
Provision for loan losses	33	491	41
Financing Receivable, Allowance for Credit Losses	$ 176	$ 216	$ 103

No authoritative reference available.

No definition available.

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- Definition

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

+ 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)(1)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ 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)(4)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ 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)(3)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524

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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 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 9

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=28368275&loc=SL6953423-111524

Reference 4: 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

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