Loans And Related Allowances For Loan Losses (Average Of Impaired Loans And Related Interest Income By Loan Portfolio Class) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Financing Receivable, Impaired [Line Items]    
Average Investment $ 48,172 $ 57,235
Interest income recognized on an accrual basis 327 288
Interest income recognized on a cash basis 48 18
Commercial real estate- non owner-occupied [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 5,274 8,899
Interest income recognized on an accrual basis 12 6
Interest income recognized on a cash basis 0 0
Commercial real estate- all other CRE [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 10,692 8,136
Interest income recognized on an accrual basis 89 80
Interest income recognized on a cash basis 46 0
Acquisition and development- 1-4 family residential construction [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 2,828 2,463
Interest income recognized on an accrual basis 24 24
Interest income recognized on a cash basis 0 0
Acquisition and development- All other A&D [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 21,350 23,124
Interest income recognized on an accrual basis 142 105
Interest income recognized on a cash basis 0 0
Commercial and industrial [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 3,432 8,514
Interest income recognized on an accrual basis 35 34
Interest income recognized on a cash basis 0 0
Residential mortgage- term [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 3,947 4,994
Interest income recognized on an accrual basis 19 35
Interest income recognized on a cash basis 2 15
Residential mortgage- home equity [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 573 1,056
Interest income recognized on an accrual basis 6 4
Interest income recognized on a cash basis 0 3
Consumer [Member]
   
Financing Receivable, Impaired [Line Items]    
Average Investment 76 49
Interest income recognized on an accrual basis 0 0
Interest income recognized on a cash basis $ 0 $ 0