Loans And Related Allowances For Loan Losses (Modification of Troubled Debt Restructuring By Class) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Temporary Rate Modification [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 0 2
Recorded Investment $ 0 $ 3,623
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 1
Recorded Investment 0 3,110
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 0 513
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 0 1
Recorded Investment 0 477
Extension Of Maturity [Member] | Commercial real estate- non owner-occupied [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 0 0
Recorded Investment 0 0
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 0 0
Recorded Investment 0 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 0 1
Recorded Investment 0 477
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 8
Recorded Investment 6,895 7,179
Modification Of Payment And Other Terms [Member] | Commercial real estate- non owner-occupied [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 0 0
Recorded Investment 0 0
Modification Of Payment And Other Terms [Member] | Commercial real estate- all other CRE [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 4 4
Recorded Investment 2,634 2,634
Modification Of Payment And Other Terms [Member] | Acquisition and development- 1-4 family residential construction [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 1 1
Recorded Investment 2,125 2,125
Modification Of Payment And Other Terms [Member] | Acquisition and development- All other A&D [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 1 1
Recorded Investment 1,889 1,889
Modification Of Payment And Other Terms [Member] | Commercial and industrial [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 1 1
Recorded Investment 247 247
Modification Of Payment And Other Terms [Member] | Residential mortgage- term [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 0 1
Recorded Investment 0 284
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