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, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 76,231	$ 118,251	$ 76,231	$ 118,251	$ 112,315
Average recorded investment	89,455	122,707	98,690	127,756
Interest income recognized	664	704	2,081	2,083
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	23,186	19,871	23,186	19,871
Average recorded investment	18,764	20,803	19,362	21,182
Interest income recognized	68	124	204	334
Construction Real Estate - SEPH Commercial Land And Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,097	6,489	2,097	6,489
Average recorded investment	3,653	7,579	4,130	9,722
Interest income recognized	12	0	134	0
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	5,970	15,606	5,970	15,606
Average recorded investment	8,561	17,249	9,587	19,118
Interest income recognized	2	136	56	548
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	23,640	34,477	23,640	34,477
Average recorded investment	27,765	34,860	29,632	35,531
Interest income recognized	255	115	825	357
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	21,303	41,009	21,303	41,009
Average recorded investment	30,644	41,417	35,458	41,642
Interest income recognized	327	329	862	844
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	35	799	35	799
Average recorded investment	68	799	521	561
Interest income recognized	$ 0	$ 0	$ 0	$ 0