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, 2016	Mar. 31, 2015
Financing Receivable, Impaired [Line Items]
Average Investment	$ 25,147	$ 23,828
Interest income recognized on an accrual basis	123	171
Interest income recognized on a cash basis	4	1
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	1,597	4,022
Interest income recognized on an accrual basis	6	40
Interest income recognized on a cash basis	0	0
Commercial real estate- all other CRE [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	13,093	7,316
Interest income recognized on an accrual basis	37	27
Interest income recognized on a cash basis	0	1
Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	700	790
Interest income recognized on an accrual basis	8	9
Interest income recognized on a cash basis	0	0
All Other Acquisition and Development [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	3,869	5,530
Interest income recognized on an accrual basis	24	32
Interest income recognized on a cash basis	0	0
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	1,071	1,689
Interest income recognized on an accrual basis	9	23
Interest income recognized on a cash basis	0	0
Residential mortgage- term [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	4,519	4,091
Interest income recognized on an accrual basis	39	40
Interest income recognized on a cash basis	4	0
Residential mortgage- home equity [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	298	377
Interest income recognized on an accrual basis	0	0
Interest income recognized on a cash basis	0	0
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	0	13
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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