Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	$ 229,929	$ 289,268
Loans individually evaluated for impairment	192,464	250,933
Loans collectively evaluated for impairment	37,465	38,335
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	24,925	19,276
Loans individually evaluated for impairment	24,925	19,205
Loans collectively evaluated for impairment		71
Construction Real Estate - Vision Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	43,602	87,424
Loans individually evaluated for impairment	42,036	86,491
Loans collectively evaluated for impairment	1,566	933
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	33,961	27,080
Loans individually evaluated for impairment	33,961	27,080
Construction Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	66	354
Loans collectively evaluated for impairment	66	354
Construction Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	107	417
Loans collectively evaluated for impairment	107	417
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	47,422	60,227
Loans individually evaluated for impairment	47,422	60,227
Residential Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	30,369	32,479
Loans collectively evaluated for impairment	30,369	32,479
Residential Real Estate - HELOC [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	1,420	964
Loans collectively evaluated for impairment	1,420	964
Residential Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	1,975	1,195
Loans collectively evaluated for impairment	1,975	1,195
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	44,099	57,941
Loans individually evaluated for impairment	44,099	57,930
Loans collectively evaluated for impairment		11
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	1,983	1,911
Loans individually evaluated for impairment	21
Loans collectively evaluated for impairment	1,962	1,911
Leases [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans
Loans individually evaluated for impairment
Loans collectively evaluated for impairment