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, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	$ 118,895	$ 135,216
Accruing restructured loans	17,595	18,809
Loans past due 90 days or more and accruing	6,556	1,727
Total nonperforming loans	143,046	155,752
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	17,761	20,633
Accruing restructured loans	5	107
Loans past due 90 days or more and accruing	3,988	80
Total nonperforming loans	21,754	20,820
Construction Real Estate - SEPH Commercial Land And Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	4,378	4,777
Accruing restructured loans	0	0
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	4,378	4,777
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	9,657	10,476
Accruing restructured loans	297	306
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	9,954	10,782
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	99	87
Accruing restructured loans	95	97
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	194	184
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	36	39
Accruing restructured loans	160	192
Loans past due 90 days or more and accruing	2	0
Total nonperforming loans	198	231
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	28,352	32,495
Accruing restructured loans	423	913
Loans past due 90 days or more and accruing	0
Total nonperforming loans	28,775	33,408
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	18,793	20,564
Accruing restructured loans	12,241	11,708
Loans past due 90 days or more and accruing	1,448	549
Total nonperforming loans	32,482	32,821
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,676	2,129
Accruing restructured loans	761	751
Loans past due 90 days or more and accruing	37	0
Total nonperforming loans	2,474	2,880
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,610	965
Accruing restructured loans	921	885
Loans past due 90 days or more and accruing	61	80
Total nonperforming loans	2,592	1,930
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	33,957	39,588
Accruing restructured loans	1,181	2,234
Loans past due 90 days or more and accruing	0	2
Total nonperforming loans	35,138	41,824
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	2,576	3,463
Accruing restructured loans	1,511	1,616
Loans past due 90 days or more and accruing	1,020	1,016
Total nonperforming loans	$ 5,107	$ 6,095