Loans and Related Allowance for Loan Losses (Modification of Troubled Debt Restructuring by Class) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) loan	Sep. 30, 2014 USD ($) loan	Sep. 30, 2015 USD ($) loan	Sep. 30, 2014 USD ($) loan
Temporary Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1	0	1	1
Recorded Investment	$ 156	$ 0	$ 156	$ 90
Temporary Rate Modification [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1	0	1	1
Recorded Investment	$ 156	$ 0	$ 156	$ 90
Temporary Rate Modification [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Extension Of Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	8	2
Recorded Investment	$ 0	$ 0	$ 5,235	$ 277
Extension Of Maturity [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	1	2
Recorded Investment	$ 0	$ 0	$ 3,097	$ 277
Extension Of Maturity [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	1	0
Recorded Investment	$ 0	$ 0	$ 237	$ 0
Extension Of Maturity [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Extension Of Maturity [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	3	0
Recorded Investment	$ 0	$ 0	$ 372	$ 0
Extension Of Maturity [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	1	0
Recorded Investment	$ 0	$ 0	$ 930	$ 0
Extension Of Maturity [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	2	0
Recorded Investment	$ 0	$ 0	$ 599	$ 0
Extension Of Maturity [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Extension Of Maturity [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	2	0	9	4
Recorded Investment	$ 2,446	$ 0	$ 6,545	$ 2,627
Modification Of Payment And Other Terms [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	1	0
Recorded Investment	$ 0	$ 0	$ 136	$ 0
Modification Of Payment And Other Terms [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	5	4
Recorded Investment	$ 0	$ 0	$ 3,847	$ 2,627
Modification Of Payment And Other Terms [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1	0	1	0
Recorded Investment	$ 700	$ 0	$ 700	$ 0
Modification Of Payment And Other Terms [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	1	0	1	0
Recorded Investment	$ 1,746	$ 0	$ 1,746	$ 0
Modification Of Payment And Other Terms [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	1	0
Recorded Investment	$ 0	$ 0	$ 116	$ 0
Modification Of Payment And Other Terms [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | loan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0