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Loans and Related Allowance for Loan Losses (Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | $ 5,608 | $ 4,844
Impaired Loans with Specific Allowance: Related Allowance | 1,166 | 1,236
Impaired Loans with No Specific Allowance: Recorded Investment | 18,976 | 19,937
Total Impaired Loans: Recorded Investment | 24,584 | 24,781
Unpaid Principal Balance | 30,121 | 30,484
Commercial real estate- non owner-occupied [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 138 | 143
Impaired Loans with Specific Allowance: Related Allowance | 30 | 35
Impaired Loans with No Specific Allowance: Recorded Investment | 4,492 | 4,353
Total Impaired Loans: Recorded Investment | 4,630 | 4,496
Unpaid Principal Balance | 4,640 | 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 | 7,968 | 7,453
Total Impaired Loans: Recorded Investment | 7,968 | 7,453
Unpaid Principal Balance | 8,459 | 7,944
Acquisition and development- 1-4 family residential construction [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 700 | 790
Impaired Loans with Specific Allowance: Related Allowance | 68 | 105
Impaired Loans with No Specific Allowance: Recorded Investment | 0 | 0
Total Impaired Loans: Recorded Investment | 700 | 790
Unpaid Principal Balance | 746 | 836
Acquisition and development- All other A&D [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 4,472 | 3,615
Impaired Loans with Specific Allowance: Related Allowance | 984 | 1,037
Impaired Loans with No Specific Allowance: Recorded Investment | 720 | 2,148
Total Impaired Loans: Recorded Investment | 5,192 | 5,763
Unpaid Principal Balance | 8,933 | 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 | 1,474 | 1,861
Total Impaired Loans: Recorded Investment | 1,474 | 1,861
Unpaid Principal Balance | 2,336 | 2,723
Residential mortgage- term [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 298 | 296
Impaired Loans with Specific Allowance: Related Allowance | 84 | 59
Impaired Loans with No Specific Allowance: Recorded Investment | 3,958 | 3,779
Total Impaired Loans: Recorded Investment | 4,256 | 4,075
Unpaid Principal Balance | 4,622 | 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 | 364 | 343
Total Impaired Loans: Recorded Investment | 364 | 343
Unpaid Principal Balance | 385 | 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 | 0 | 0
Total Impaired Loans: Recorded Investment | 0 | 0
Unpaid Principal Balance | $ 0 | $ 0

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- Definition 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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