Loans (Nonaccrual Loans Individually And Collectively Evaluated For Impairment) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Nonaccrual loans	$ 238,690	$ 289,268
Loans individually evaluated for impairment	200,400	250,933
Loans collectively evaluated for impairment	38,290	38,335
Commercial Real Estate [Member]
Nonaccrual loans	47,243	57,941
Loans individually evaluated for impairment	47,243	57,930
Loans collectively evaluated for impairment		11
Consumer [Member]
Nonaccrual loans	1,926	1,911
Loans individually evaluated for impairment	23
Loans collectively evaluated for impairment	1,903	1,911
Commercial, Financial And Agricultural [Member]
Nonaccrual loans	24,008	19,276
Loans individually evaluated for impairment	24,008	19,205
Loans collectively evaluated for impairment		71
Construction Real Estate - Vision Commercial Land And Development [Member]
Nonaccrual loans	47,761	87,424
Loans individually evaluated for impairment	46,847	86,491
Loans collectively evaluated for impairment	914	933
Construction Real Estate - Remaining Commercial [Member]
Nonaccrual loans	33,685	27,080
Loans individually evaluated for impairment	33,685	27,080
Construction Real Estate - Mortgage [Member]
Nonaccrual loans		354
Loans collectively evaluated for impairment		354
Construction Real Estate - Installment [Member]
Nonaccrual loans	427	417
Loans collectively evaluated for impairment	427	417
Residential Real Estate - Commercial [Member]
Nonaccrual loans	48,594	60,227
Loans individually evaluated for impairment	48,594	60,227
Residential Real Estate - Mortgage [Member]
Nonaccrual loans	32,459	32,479
Loans collectively evaluated for impairment	32,459	32,479
Residential Real Estate - HELOC [Member]
Nonaccrual loans	1,418	964
Loans collectively evaluated for impairment	1,418	964
Residential Real Estate - Installment [Member]
Nonaccrual loans	1,169	1,195
Loans collectively evaluated for impairment	$ 1,169	$ 1,195