Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 142,362	$ 192,464	$ 142,362	$ 192,464	$ 187,135
Average recorded investment	159,750	194,878	171,347	223,412
Interest income recognized	1,095	191	2,515	789
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	22,103	24,925	22,103	24,925
Average recorded investment	35,720	24,049	38,989	21,361
Interest income recognized	100	49	410	155
Construction Real Estate - Vision/SEPH Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	13,261	42,036	13,261	42,036
Average recorded investment	14,991	43,555	18,481	67,135
Interest income recognized
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	27,418	33,961	27,418	33,961
Average recorded investment	28,400	34,027	28,633	29,573
Interest income recognized	411	116	861	330
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	36,583	47,422	36,583	47,422
Average recorded investment	37,121	48,064	40,199	54,454
Interest income recognized	233		398	153
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	42,978	44,099	42,978	44,099
Average recorded investment	43,499	45,162	45,026	50,874
Interest income recognized	351	26	845	150
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	19	21	19	21
Average recorded investment	19	21	19	15
Interest income recognized			$ 1	$ 1