Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	$ 214,366	$ 289,268
Accruing restructured loans	15,563
Loans past due 90 days or more and accruing	2,222	3,693
Total nonperforming loans	232,151	292,961
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	21,844	19,276
Accruing restructured loans	3,081
Loans past due 90 days or more and accruing	22
Total nonperforming loans	24,947	19,276
Construction Real Estate - Vision Commercial Land And Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	42,353	87,424
Accruing restructured loans	1,249
Total nonperforming loans	43,602	87,424
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	29,386	27,080
Accruing restructured loans	4,575
Total nonperforming loans	33,961	27,080
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	66	354
Accruing restructured loans
Total nonperforming loans	66	354
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	107	417
Accruing restructured loans
Loans past due 90 days or more and accruing		13
Total nonperforming loans	107	430
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	47,422	60,227
Accruing restructured loans
Total nonperforming loans	47,422	60,227
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	25,976	32,479
Accruing restructured loans	4,393
Loans past due 90 days or more and accruing	1,237	2,175
Total nonperforming loans	31,606	34,654
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,420	964
Accruing restructured loans
Loans past due 90 days or more and accruing		149
Total nonperforming loans	1,420	1,113
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,953	1,195
Accruing restructured loans	22
Loans past due 90 days or more and accruing	112	277
Total nonperforming loans	2,087	1,472
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	41,856	57,941
Accruing restructured loans	2,243
Loans past due 90 days or more and accruing		20
Total nonperforming loans	44,099	57,961
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,983	1,911
Accruing restructured loans
Loans past due 90 days or more and accruing	851	1,059
Total nonperforming loans	2,834	2,970
Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans
Accruing restructured loans
Loans past due 90 days or more and accruing
Total nonperforming loans