Loans and Related Allowance for Loan Losses (Modification of Troubled Debt Restructuring by Class) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 loan	Mar. 31, 2014 loan
Temporary Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Recorded Investment	$ 0	$ 90
Temporary Rate Modification [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	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	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	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	0	0
Recorded Investment	0	0
Temporary Rate Modification [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Temporary Rate Modification [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Recorded Investment	0	90
Temporary Rate Modification [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Temporary Rate Modification [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Extension Of Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6	2
Recorded Investment	4,068	277
Extension Of Maturity [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	2
Recorded Investment	3,097	277
Extension Of Maturity [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Extension Of Maturity [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Extension Of Maturity [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3	0
Recorded Investment	372	0
Extension Of Maturity [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Extension Of Maturity [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	0
Recorded Investment	599	0
Extension Of Maturity [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Extension Of Maturity [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Modification Of Payment And Other Terms [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	7	1
Recorded Investment	4,099	454
Modification Of Payment And Other Terms [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Recorded Investment	136	0
Modification Of Payment And Other Terms [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	5	1
Recorded Investment	3,847	454
Modification Of Payment And Other Terms [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	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	0	0
Recorded Investment	0	0
Modification Of Payment And Other Terms [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Modification Of Payment And Other Terms [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0
Recorded Investment	116	0
Modification Of Payment And Other Terms [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Modification Of Payment And Other Terms [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0
Recorded Investment	$ 0	$ 0