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Loans and Related Allowance for Loan Losses (Modification of Troubled Debt Restructuring by Class) (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($) contract	Jun. 30, 2018 USD ($) contract	Jun. 30, 2017 USD ($) contract
Temporary Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1	2
Recorded Investment | $	$ 179	$ 179	$ 503
Extended Maturity [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Extended Maturity [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1	0
Recorded Investment | $	$ 179	$ 179	$ 0
Extended Maturity [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Extended Maturity [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	1
Recorded Investment | $	$ 0	$ 0	$ 244
Extended Maturity [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Extended Maturity [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	1
Recorded Investment | $	$ 0	$ 0	$ 259
Extended Maturity [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Extended Maturity [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1	0
Recorded Investment | $	$ 126	$ 126	$ 0
Modification Of Payment And Other Terms [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1	0
Recorded Investment | $	$ 126	$ 126	$ 0
Modification Of Payment And Other Terms [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0

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- Definition

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+ References

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings during the period.

+ References

No definition available.

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- Definition

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