Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	$ 151,539	$ 155,536
Accruing restructured loans	24,357	29,946
Loans past due 90 days or more and accruing	1,389	3,030
Total nonperforming loans	177,285	188,512
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	20,339	17,324
Accruing restructured loans	1,414	5,277
Loans past due 90 days or more and accruing	0	37
Total nonperforming loans	21,753	22,638
Construction Real Estate - Vision/SEPH Commercial Land And Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	11,133	13,939
Accruing restructured loans	0
Loans past due 90 days or more and accruing	0
Total nonperforming loans	11,133	13,939
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	16,900	14,977
Accruing restructured loans	3,583	6,597
Loans past due 90 days or more and accruing	0
Total nonperforming loans	20,483	21,574
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	146	158
Accruing restructured loans	99	100
Loans past due 90 days or more and accruing	44
Total nonperforming loans	289	258
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	128	149
Accruing restructured loans	172	175
Loans past due 90 days or more and accruing	0
Total nonperforming loans	300	324
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	35,469	33,961
Accruing restructured loans	1,253	1,661
Loans past due 90 days or more and accruing	0	94
Total nonperforming loans	36,722	35,716
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	23,938	28,260
Accruing restructured loans	11,126	9,425
Loans past due 90 days or more and accruing	544	950
Total nonperforming loans	35,608	38,635
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,864	1,689
Accruing restructured loans	753	736
Loans past due 90 days or more and accruing	0
Total nonperforming loans	2,617	2,425
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,404	1,670
Accruing restructured loans	817	780
Loans past due 90 days or more and accruing	33	54
Total nonperforming loans	2,254	2,504
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	36,724	40,983
Accruing restructured loans	3,351	3,295
Loans past due 90 days or more and accruing	0	1,007
Total nonperforming loans	40,075	45,285
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	3,494	2,426
Accruing restructured loans	1,789	1,900
Loans past due 90 days or more and accruing	768	888
Total nonperforming loans	$ 6,051	$ 5,214