Loans (Loans Individually Evaluated For Impairment, By Class Of Loans) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	$ 288,284	$ 304,534
Recorded investment	192,464	250,933
Allowance for loan losses allocated	40,337	66,904
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	24,925
Commercial, Financial And Agricultural [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	17,903	9,347
Recorded investment	12,329	8,891
Commercial, Financial And Agricultural [Member] \| With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	15,945	11,801
Recorded investment	12,596	10,314
Allowance for loan losses allocated	6,400	3,028
Construction Real Estate - Vision Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	42,036
Construction Real Estate - Vision Commercial Land And Development [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	41,022	11,206
Recorded investment	15,952	7,847
Construction Real Estate - Vision Commercial Land And Development [Member] \| With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	52,623	103,937
Recorded investment	26,084	78,644
Allowance for loan losses allocated	15,133	39,887
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	33,961
Construction Real Estate - Remaining Commercial [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	17,582	12,305
Recorded investment	16,299	11,743
Construction Real Estate - Remaining Commercial [Member] \| With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	30,813	23,563
Recorded investment	17,662	15,337
Allowance for loan losses allocated	8,940	5,425
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	47,422
Residential Real Estate - Commercial [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	32,568	46,344
Recorded investment	29,949	43,031
Residential Real Estate - Commercial [Member] \| With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	21,847	19,716
Recorded investment	17,473	17,196
Allowance for loan losses allocated	4,681	5,912
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	44,099
Commercial Real Estate [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	39,400	21,526
Recorded investment	30,680	17,170
Commercial Real Estate [Member] \| With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	18,560	44,789
Recorded investment	12,419	40,760
Allowance for loan losses allocated	5,183	12,652
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	21
Consumer [Member] \| With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance
Recorded investment
Allowance for loan losses allocated
Consumer [Member] \| With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	21
Recorded investment	$ 21