Loans and Related Allowance for Loan Losses (Average of Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Impaired [Line Items]
Average Investment	$ 13,468	$ 13,498
Interest income recognized on an accrual basis	77	99
Interest income recognized on a cash basis	8	129
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	280	2,660
Interest income recognized on an accrual basis	3	4
Interest income recognized on a cash basis	0	66
Commercial real estate- all other CRE [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	4,516	5,142
Interest income recognized on an accrual basis	38	49
Interest income recognized on a cash basis	0	56
Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	313	527
Interest income recognized on an accrual basis	5	6
Interest income recognized on a cash basis	0	0
Acquisition and development- All other A&D [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	4,040	426
Interest income recognized on an accrual basis	3	3
Interest income recognized on a cash basis	0	0
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	22	493
Interest income recognized on an accrual basis	0	5
Interest income recognized on a cash basis	0	0
Residential mortgage- term [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	3,462	3,595
Interest income recognized on an accrual basis	28	32
Interest income recognized on a cash basis	8	0
Residential mortgage- home equity [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	818	627
Interest income recognized on an accrual basis	0	0
Interest income recognized on a cash basis	0	7
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	17	28
Interest income recognized on an accrual basis	0	0
Interest income recognized on a cash basis	$ 0	$ 0

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- Definition

Average 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 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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+ References

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