Loans (Loans Individually Evaluated For Impairment By Class Of Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	$ 289,090	$ 304,534
Recorded investment	200,400	250,933
Allowance for loan losses allocated	42,797	66,904
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	24,008
Commercial, Financial And Agricultural [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	14,086	9,347
Recorded investment	11,125	8,891
Commercial, Financial And Agricultural [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	15,996	11,801
Recorded investment	12,883	10,314
Allowance for loan losses allocated	7,367	3,028
Construction Real Estate - Vision Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	46,847
Construction Real Estate - Vision Commercial Land And Development [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	23,627	11,206
Recorded investment	8,723	7,847
Construction Real Estate - Vision Commercial Land And Development [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	72,912	103,937
Recorded investment	38,124	78,644
Allowance for loan losses allocated	15,076	39,887
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	33,685
Construction Real Estate - Remaining Commercial [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	24,403	12,305
Recorded investment	20,963	11,743
Construction Real Estate - Remaining Commercial [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	21,918	23,563
Recorded investment	12,722	15,337
Allowance for loan losses allocated	5,129	5,425
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	48,594
Residential Real Estate - Commercial [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	38,326	46,344
Recorded investment	35,283	43,031
Residential Real Estate - Commercial [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	16,740	19,716
Recorded investment	13,311	17,196
Allowance for loan losses allocated	5,152	5,912
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	47,243
Commercial Real Estate [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	44,827	21,526
Recorded investment	31,624	17,170
Commercial Real Estate [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	16,232	44,789
Recorded investment	15,619	40,760
Allowance for loan losses allocated	10,050	12,652
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	23
Consumer [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	23
Recorded investment	23
Allowance for loan losses allocated	$ 23