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 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Financing Receivable, Impaired [Line Items]        
Average Investment $ 54,510 $ 67,419 $ 55,873 $ 68,631
Interest income recognized on an accrual basis 306 326 851 1,002
Interest income recognized on a cash basis 6 39 45 240
Commercial real estate- non owner-occupied [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 6,540 11,650 7,720 13,409
Interest income recognized on an accrual basis 10 6 22 41
Interest income recognized on a cash basis 0 30 0 91
Commercial real estate- all other CRE [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 10,010 8,202 9,073 6,636
Interest income recognized on an accrual basis 86 74 220 204
Interest income recognized on a cash basis 0 0 0 50
Acquisition and development- 1-4 family residential construction [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 2,127 2,592 2,295 2,921
Interest income recognized on an accrual basis 21 16 67 69
Interest income recognized on a cash basis 0 0 0 0
Acquisition and development- All other A&D [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 25,897 25,158 24,510 26,520
Interest income recognized on an accrual basis 120 154 327 444
Interest income recognized on a cash basis 0 0 0 81
Commercial and industrial [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 4,130 13,925 6,322 11,688
Interest income recognized on an accrual basis 39 40 111 117
Interest income recognized on a cash basis 0 0 0 0
Residential mortgage- term [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 5,020 5,251 5,007 6,761
Interest income recognized on an accrual basis 26 33 93 117
Interest income recognized on a cash basis 2 8 38 14
Residential mortgage- home equity [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 739 618 898 635
Interest income recognized on an accrual basis 4 3 11 10
Interest income recognized on a cash basis 4 1 7 4
Consumer [Member]
       
Financing Receivable, Impaired [Line Items]        
Average Investment 47 23 48 61
Interest income recognized on an accrual basis 0 0 0 0
Interest income recognized on a cash basis $ 0 $ 0 $ 0 $ 0