Loans and Related Allowance for Loan Losses (Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	$ 3,290	$ 4,844
Impaired Loans with Specific Allowance: Related Allowance	825	1,236
Impaired Loans with No Specific Allowance: Recorded Investment	19,569	19,937
Total Impaired Loans: Recorded Investment	22,859	24,781
Unpaid Principal Balance	28,884	30,484
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	141	143
Impaired Loans with Specific Allowance: Related Allowance	33	35
Impaired Loans with No Specific Allowance: Recorded Investment	3,406	4,353
Total Impaired Loans: Recorded Investment	3,547	4,496
Unpaid Principal Balance	3,844	4,543
Commercial real estate- all other CRE [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	0	0
Impaired Loans with Specific Allowance: Related Allowance	0	0
Impaired Loans with No Specific Allowance: Recorded Investment	7,179	7,453
Total Impaired Loans: Recorded Investment	7,179	7,453
Unpaid Principal Balance	7,670	7,944
Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	790	790
Impaired Loans with Specific Allowance: Related Allowance	130	105
Impaired Loans with No Specific Allowance: Recorded Investment	0	0
Total Impaired Loans: Recorded Investment	790	790
Unpaid Principal Balance	836	836
Acquisition and development- All other A&D [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	2,069	3,615
Impaired Loans with Specific Allowance: Related Allowance	600	1,037
Impaired Loans with No Specific Allowance: Recorded Investment	3,229	2,148
Total Impaired Loans: Recorded Investment	5,298	5,763
Unpaid Principal Balance	9,240	9,590
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	0	0
Impaired Loans with Specific Allowance: Related Allowance	0	0
Impaired Loans with No Specific Allowance: Recorded Investment	1,516	1,861
Total Impaired Loans: Recorded Investment	1,516	1,861
Unpaid Principal Balance	2,378	2,723
Residential mortgage- term [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	290	296
Impaired Loans with Specific Allowance: Related Allowance	62	59
Impaired Loans with No Specific Allowance: Recorded Investment	3,815	3,779
Total Impaired Loans: Recorded Investment	4,105	4,075
Unpaid Principal Balance	4,471	4,485
Residential mortgage- home equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	0	0
Impaired Loans with Specific Allowance: Related Allowance	0	0
Impaired Loans with No Specific Allowance: Recorded Investment	411	343
Total Impaired Loans: Recorded Investment	411	343
Unpaid Principal Balance	432	363
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Specific Allowance: Recorded Investment	0	0
Impaired Loans with Specific Allowance: Related Allowance	0	0
Impaired Loans with No Specific Allowance: Recorded Investment	13	0
Total Impaired Loans: Recorded Investment	13	0
Unpaid Principal Balance	$ 13	$ 0

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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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

+ Details

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=35738203&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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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