Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 126,102	$ 169,690	$ 126,102	$ 169,690	$ 137,339
Average recorded investment	127,057	174,963	130,405	177,738
Interest income recognized	645	817	1,379	1,420
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	20,154	41,591	20,154	41,591
Average recorded investment	21,148	42,056	21,252	41,218
Interest income recognized	82	205	210	310
Construction Real Estate - Vision/SEPH Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	9,074	17,272	9,074	17,272
Average recorded investment	9,532	18,412	10,854	20,302
Interest income recognized
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	18,535	29,562	18,535	29,562
Average recorded investment	19,390	31,428	20,103	28,899
Interest income recognized	192	199	412	450
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	35,412	37,277	35,412	37,277
Average recorded investment	36,141	40,359	35,897	41,541
Interest income recognized	112	125	242	165
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	42,128	43,969	42,128	43,969
Average recorded investment	40,047	42,689	41,840	45,758
Interest income recognized	259	287	515	494
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	799	19	799	19
Average recorded investment	799	19	459	20
Interest income recognized		$ 1		$ 1