Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	$ 145,398	$ 155,536
Accruing restructured loans	22,486	29,946
Loans past due 90 days or more and accruing	1,545	3,030
Total nonperforming loans	169,429	188,512
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	20,060	17,324
Accruing restructured loans	111	5,277
Loans past due 90 days or more and accruing	0	37
Total nonperforming loans	20,171	22,638
Construction Real Estate - Vision/SEPH Commercial Land And Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	9,103	13,939
Accruing restructured loans	0
Loans past due 90 days or more and accruing	0
Total nonperforming loans	9,103	13,939
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	15,682	14,977
Accruing restructured loans	2,853	6,597
Loans past due 90 days or more and accruing	0
Total nonperforming loans	18,535	21,574
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	61	158
Accruing restructured loans	98	100
Loans past due 90 days or more and accruing	0
Total nonperforming loans	159	258
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	41	149
Accruing restructured loans	169	175
Loans past due 90 days or more and accruing	0
Total nonperforming loans	210	324
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	34,506	33,961
Accruing restructured loans	906	1,661
Loans past due 90 days or more and accruing	0	94
Total nonperforming loans	35,412	35,716
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	20,967	28,260
Accruing restructured loans	11,569	9,425
Loans past due 90 days or more and accruing	739	950
Total nonperforming loans	33,275	38,635
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,732	1,689
Accruing restructured loans	754	736
Loans past due 90 days or more and accruing	0
Total nonperforming loans	2,486	2,425
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	979	1,670
Accruing restructured loans	927	780
Loans past due 90 days or more and accruing	0	54
Total nonperforming loans	1,906	2,504
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	38,818	40,983
Accruing restructured loans	3,310	3,295
Loans past due 90 days or more and accruing	0	1,007
Total nonperforming loans	42,128	45,285
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	3,449	2,426
Accruing restructured loans	1,789	1,900
Loans past due 90 days or more and accruing	806	888
Total nonperforming loans	$ 6,044	$ 5,214