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, 2016 USD ($) contract	Jun. 30, 2015 USD ($) contract	Jun. 30, 2016 USD ($) loan	Jun. 30, 2015 USD ($) contract
Temporary Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0	1	0
Recorded Investment	$ 54	$ 0	$ 54	$ 0
Temporary Rate Modification [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	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	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	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	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	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	1	0	1	0
Recorded Investment	$ 54	$ 0	$ 54	$ 0
Temporary Rate Modification [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Temporary Rate Modification [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	2	1	8
Recorded Investment	$ 0	$ 1,167	$ 203	$ 5,235
Extended Maturity [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	1
Recorded Investment	$ 0	$ 0	$ 0	$ 3,097
Extended Maturity [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1	1	1
Recorded Investment	$ 0	$ 237	$ 203	$ 237
Extended Maturity [Member] | Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Extended Maturity [Member] | Acquisition and development- All other A&D [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	3
Recorded Investment	$ 0	$ 0	$ 0	$ 372
Extended Maturity [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1	0	1
Recorded Investment	$ 0	$ 930	$ 0	$ 930
Extended Maturity [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	2
Recorded Investment	$ 0	$ 0	$ 0	$ 599
Extended Maturity [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Extended Maturity [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	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	0	0	2	7
Recorded Investment	$ 0	$ 0	$ 558	$ 4,099
Modification Of Payment And Other Terms [Member] | Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	1
Recorded Investment	$ 0	$ 0	$ 0	$ 136
Modification Of Payment And Other Terms [Member] | Commercial real estate- all other CRE [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	5
Recorded Investment	$ 0	$ 0	$ 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	0	0	0	0
Recorded Investment	$ 0	$ 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	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Modification Of Payment And Other Terms [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	1	0
Recorded Investment	$ 0	$ 0	$ 486	$ 0
Modification Of Payment And Other Terms [Member] | Residential mortgage- term [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	1	1
Recorded Investment	$ 0	$ 0	$ 72	$ 116
Modification Of Payment And Other Terms [Member] | Residential mortgage- home equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	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	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0