Loans (Loans Individually Evaluated For Impairment By Class Of Loans) (Details) (USD $) In Thousands	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	33,275	43,459
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	24,052
Recorded investment	31,680	19,697
Commercial Real Estate [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	18,560	42,263
Recorded investment	12,419	38,233
Allowance for loan losses allocated	5,183	10,001
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
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	23,222	9,347
Recorded investment	15,496	8,891
Commercial, Financial And Agricultural [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	10,626	11,801
Recorded investment	9,429	10,314
Allowance for loan losses allocated	2,511	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	50,070	23,021
Recorded investment	17,468	20,162
Construction Real Estate - Vision Commercial Land And Development [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	43,575	92,122
Recorded investment	24,568	66,329
Allowance for loan losses allocated	12,135	23,585
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	15,192
Recorded investment	16,299	14,630
Construction Real Estate - Remaining Commercial [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	30,813	20,676
Recorded investment	17,662	12,450
Allowance for loan losses allocated	8,765	2,802
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	51,261
Recorded investment	29,949	47,009
Residential Real Estate - Commercial [Member] | With An Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	21,847	14,799
Recorded investment	17,473	13,218
Allowance for loan losses allocated	$ 4,681	$ 4,043