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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, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | $ 12,532 | $ 3,868
Impaired Loans with Specific Allowance: Related Allowance | 2,600 | 1,157
Impaired Loans with No Specific Allowance: Recorded Investment | 18,916 | 20,940
Total Impaired Loans: Recorded Investment | 31,448 | 24,808
Unpaid Principal Balance | 35,130 | 32,700
Commercial real estate- non owner-occupied [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 9,600 | 676
Impaired Loans with Specific Allowance: Related Allowance | 1,781 | 144
Impaired Loans with No Specific Allowance: Recorded Investment | 745 | 1,031
Total Impaired Loans: Recorded Investment | 10,345 | 1,707
Unpaid Principal Balance | 10,691 | 1,842
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 | 11,889 | 12,939
Total Impaired Loans: Recorded Investment | 11,889 | 12,939
Unpaid Principal Balance | 12,218 | 13,302
Acquisition and development- 1-4 family residential construction [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 582 | 700
Impaired Loans with Specific Allowance: Related Allowance | 117 | 178
Impaired Loans with No Specific Allowance: Recorded Investment | 0 | 0
Total Impaired Loans: Recorded Investment | 582 | 700
Unpaid Principal Balance | 628 | 746
Acquisition and development- All other A&D [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 1,943 | 1,979
Impaired Loans with Specific Allowance: Related Allowance | 653 | 689
Impaired Loans with No Specific Allowance: Recorded Investment | 92 | 1,817
Total Impaired Loans: Recorded Investment | 2,035 | 3,796
Unpaid Principal Balance | 2,326 | 8,362
Commercial and industrial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 0 | 16
Impaired Loans with Specific Allowance: Related Allowance | 0 | 16
Impaired Loans with No Specific Allowance: Recorded Investment | 1,176 | 1,060
Total Impaired Loans: Recorded Investment | 1,176 | 1,076
Unpaid Principal Balance | 3,390 | 3,343
Residential mortgage- term [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 351 | 440
Impaired Loans with Specific Allowance: Related Allowance | 32 | 112
Impaired Loans with No Specific Allowance: Recorded Investment | 4,695 | 3,874
Total Impaired Loans: Recorded Investment | 5,046 | 4,314
Unpaid Principal Balance | 5,475 | 4,808
Residential mortgage- home equity [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 56 | 57
Impaired Loans with Specific Allowance: Related Allowance | 17 | 18
Impaired Loans with No Specific Allowance: Recorded Investment | 319 | 219
Total Impaired Loans: Recorded Investment | 375 | 276
Unpaid Principal Balance | 396 | 297
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 | $ 6 | $ 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=49124121&loc=SL6953550-111524 + Details
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