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Loans And Related Allowances For Loan Losses (Modification of Troubled Debt Restructuring by Class) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) contract	Dec. 31, 2015 USD ($) contract
Temporary Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	3	1
Recorded Investment | $	$ 260	$ 156
Temporary Rate Modification [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0
Temporary Rate Modification [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 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
Recorded Investment | $	$ 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
Recorded Investment | $	$ 0	$ 0
Temporary Rate Modification [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0
Temporary Rate Modification [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	3	1
Recorded Investment | $	$ 260	$ 156
Temporary Rate Modification [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0
Temporary Rate Modification [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0
Extension Of Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	5	9
Recorded Investment | $	$ 2,992	$ 5,377
Extension Of Maturity [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	1
Recorded Investment | $	$ 0	$ 3,097
Extension Of Maturity [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1
Recorded Investment | $	$ 203	$ 237
Extension Of Maturity [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	0
Recorded Investment | $	$ 582	$ 0
Extension Of Maturity [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	3
Recorded Investment | $	$ 1,664	$ 372
Extension Of Maturity [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	1
Recorded Investment | $	$ 482	$ 930
Extension Of Maturity [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	3
Recorded Investment | $	$ 61	$ 741
Extension Of Maturity [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0
Extension Of Maturity [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0
Modification Of Payment And Other Terms [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	4	10
Recorded Investment | $	$ 955	$ 6,669
Modification Of Payment And Other Terms [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	2
Recorded Investment | $	$ 0	$ 260
Modification Of Payment And Other Terms [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	5
Recorded Investment | $	$ 0	$ 3,847
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	1
Recorded Investment | $	$ 0	$ 700
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	1
Recorded Investment | $	$ 0	$ 1,746
Modification Of Payment And Other Terms [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1	0
Recorded Investment | $	$ 486	$ 0
Modification Of Payment And Other Terms [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	3	1
Recorded Investment | $	$ 469	$ 116
Modification Of Payment And Other Terms [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	0
Recorded Investment | $	$ 0	$ 0

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- Definition

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