Loans And Related Allowances For Loan Losses (Average of Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Average Investment	$ 27,028	$ 24,214
Interest income recognized on an accrual basis	640	653
Interest income recognized on a cash basis	24	136
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	6,076	3,792
Interest income recognized on an accrual basis	131	144
Interest income recognized on a cash basis	0	0
Commercial real estate- all other CRE [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	11,802	8,688
Interest income recognized on an accrual basis	187	124
Interest income recognized on a cash basis	8	106
Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	629	736
Interest income recognized on an accrual basis	27	33
Interest income recognized on a cash basis	0	0
Acquisition and development- All other A&D [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	2,735	5,008
Interest income recognized on an accrual basis	95	119
Interest income recognized on a cash basis	0	0
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	934	1,392
Interest income recognized on an accrual basis	37	69
Interest income recognized on a cash basis	0	18
Residential mortgage- term [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	4,580	4,258
Interest income recognized on an accrual basis	163	164
Interest income recognized on a cash basis	16	10
Residential mortgage- home equity [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	272	334
Interest income recognized on an accrual basis	0	0
Interest income recognized on a cash basis	0	2
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	0	6
Interest income recognized on an accrual basis	0	0
Interest income recognized on a cash basis	$ 0	$ 0

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No definition available.

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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=49124121&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=49124121&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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