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, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 118,251	$ 142,362	$ 118,251	$ 142,362	$ 137,339
Average recorded investment	122,707	159,750	127,756	171,347
Interest income recognized	704	1,095	2,083	2,515
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	19,871	22,103	19,871	22,103
Average recorded investment	20,803	35,720	21,182	38,989
Interest income recognized	124	100	334	410
Construction Real Estate - SEPH Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	6,489	13,261	6,489	13,261
Average recorded investment	7,579	14,991	9,722	18,481
Interest income recognized	0	0	0	0
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	15,606	27,418	15,606	27,418
Average recorded investment	17,249	28,400	19,118	28,633
Interest income recognized	136	411	548	861
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	34,477	36,583	34,477	36,583
Average recorded investment	34,860	37,121	35,531	40,199
Interest income recognized	115	233	357	398
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	41,009	42,978	41,009	42,978
Average recorded investment	41,417	43,499	41,642	45,026
Interest income recognized	329	351	844	845
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	799	19	799	19
Average recorded investment	799	19	561	19
Interest income recognized	$ 0	$ 0	$ 0	$ 1