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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 | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | $ 6,872 | $ 869
Impaired Loans with Specific Allowance: Related Allowance | 1,950 | 260
Impaired Loans with No Specific Allowance: Recorded Investment | 13,982 | 23,131
Total Impaired Loans: Recorded Investment | 20,854 | 24,000
Total Impaired Loans: Unpaid Principal Balance | 27,293 | 30,191
Commercial real estate- non owner-occupied [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 5,607 | 131
Impaired Loans with Specific Allowance: Related Allowance | 1,641 | 23
Impaired Loans with No Specific Allowance: Recorded Investment | 251 | 6,635
Total Impaired Loans: Recorded Investment | 5,858 | 6,766
Total Impaired Loans: Unpaid Principal Balance | 8,831 | 9,372
Commercial real estate- all other CRE [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 432 | 432
Impaired Loans with Specific Allowance: Related Allowance | 154 | 154
Impaired Loans with No Specific Allowance: Recorded Investment | 7,764 | 10,012
Total Impaired Loans: Recorded Investment | 8,196 | 10,444
Total Impaired Loans: Unpaid Principal Balance | 8,809 | 11,057
Acquisition and development- 1-4 family residential construction [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 | 582 | 582
Total Impaired Loans: Recorded Investment | 582 | 582
Total Impaired Loans: Unpaid Principal Balance | 582 | 628
Acquisition and development- All other A&D [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 244 | 245
Impaired Loans with Specific Allowance: Related Allowance | 38 | 40
Impaired Loans with No Specific Allowance: Recorded Investment | 1,594 | 1,698
Total Impaired Loans: Recorded Investment | 1,838 | 1,943
Total Impaired Loans: Unpaid Principal Balance | 2,112 | 2,213
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 | 290 | 290
Total Impaired Loans: Recorded Investment | 290 | 290
Total Impaired Loans: Unpaid Principal Balance | 2,504 | 2,504
Residential mortgage- term [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 445 | 61
Impaired Loans with Specific Allowance: Related Allowance | 50 | 43
Impaired Loans with No Specific Allowance: Recorded Investment | 3,349 | 3,763
Total Impaired Loans: Recorded Investment | 3,794 | 3,824
Total Impaired Loans: Unpaid Principal Balance | 4,124 | 4,249
Residential mortgage- home equity [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 144 | 0
Impaired Loans with Specific Allowance: Related Allowance | 67 | 0
Impaired Loans with No Specific Allowance: Recorded Investment | 152 | 151
Total Impaired Loans: Recorded Investment | 296 | 151
Total Impaired Loans: Unpaid Principal Balance | 331 | 168
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
Total Impaired Loans: 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=49124121&loc=SL6953550-111524 + Details
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