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Loans and Related Allowance for Loan Losses (Allowance for Loan Losses Summarized by Loan Portfolio Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	$ 9,972	$ 9,918
Charge-offs	(313)	(712)
Recoveries	364	1,768
Provision for loan losses	447	609
ALL Ending Balance	10,470	11,583
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	3,699	3,913
Charge-offs	0	(429)
Recoveries	59	5
Provision for loan losses	218	2,078
ALL Ending Balance	3,976	5,567
Acquisition and Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	1,257	871
Charge-offs	(91)	(18)
Recoveries	214	11
Provision for loan losses	(220)	19
ALL Ending Balance	1,160	883
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	869	858
Charge-offs	0	(33)
Recoveries	18	1,455
Provision for loan losses	(27)	(1,344)
ALL Ending Balance	860	936
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	3,444	3,588
Charge-offs	(154)	(148)
Recoveries	38	220
Provision for loan losses	350	(158)
ALL Ending Balance	3,678	3,502
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	203	188
Charge-offs	(68)	(84)
Recoveries	35	77
Provision for loan losses	126	14
ALL Ending Balance	296	195
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	500	500
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	0	0
ALL Ending Balance	$ 500	$ 500

X

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+ References

No definition available.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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Amount of direct write-downs of financing receivables charged against the allowance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 310
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-Section 50
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Amount of expense related to estimated loss from loan and lease transactions.

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